Now we are down safely I am starting a map thread. Everything that happens during 2021 will be covered in my still-in-progress atlas, so I have to make the maps for that and everyone can follow as they evolve.
Let me know if any feature names start to show up.
Preliminary map even though not much has happened yet. But if you look closely you will see something, even now.
Phil
Lovely stuff, Phil.
Are we seeing evidence of the rock pavement being cleared of dust by the descent engines, to the NE and SW?
And conversely dark streaks towards the NW and SE ?
A very minor observation is that because the gridlines intersect in the middle of Perseverance (as they should), we can't clearly see your lovely little rover symbol!
Looking forward to seeing some white lines appearing soon....
Thanks again.
excellent! There's a white blob in the sand-filled crater 1 click SW of the rover. Seems strange for a large boulder to be there, so is that somehow part of the EDL?
Easy test - go find the location in this map. If it's in this map - it's pre-EDL - it's just natural.
You don't mean this by any chance? This is pre-landing.
Following up on http://www.unmannedspaceflight.com/index.php?s=&showtopic=8591&view=findpost&p=250416 I thought it may be useful to easily look up coordinates and measure distances on the map. Here is a bare bones web app (takes a bit to load) to do that:
http://bit.ly/PercyMAP
with reduced texture for mobile
http://bit.ly/PercyMAPm
It is made using https://www.x3dom.org/ and a little javascript. One can zoom in (wheel or right mouse drag), pan (middle mouse drag) and re-center (double left click). The coordinates of the cross-hair are reported and left clicking adds the current position to a list, and calculates the distance from the last recorded point.
For example, it turns out that the wind-carved walrus boulder (harbour seal) is about 12m away from the rover. The used HiRISE DEM has nominally a 1m resolution but seems smoother than that in places, perhaps not picking up all boulders.
I may add a few additional features (controlling shading, continuous reporting of distance to rover) but nothing fancy to keep it really simple.
[edit] There is now a slider to control vertical exaggeration of the elevation model.
OK, first drive, first map. It's a close-up, not the overview provided by the first one I posted, which I will come back to as we move more.
This map uses HiRISE for geometric control, with descent images registered to that for more detail, and the first panorama projected out over that.
Phil
... and so it begins... surprise us!
OK, it did surprise me. We are outside my base map on sol 15, so here is a new map for this drive. That's the problem when you are mapping in real time! Fully prepared to have to switch map bases again tomorrow - that will be back to the first one I posted, most likely.
You may notice that my route is offset a few meters from the one on the interactive map on the mission website - they start a bit too close to the drift behind the rover at landing, and the whole path and each site retains that offset. My site locations are based on hazcam images.
Phil
I had noticed that offset as well. It seems to me that somehow their rover position to base map registration is a little off.
Looking at the network traffic on https://mars.nasa.gov/mars2020/mission/where-is-the-rover/, it turns out that the traverse and waypoints are plotted with a geojson file.
traverse: https://mars.nasa.gov/mmgis-maps/M20/Layers/json/M20_traverse.json
waypoints: https://mars.nasa.gov/mmgis-maps/M20/Layers/json/M20_waypoints.json
The geojson has the actual coordinates, and one can use it directly for mapping:
The traverse is given by small multiple segments, shown as the grey points. The red waypoints have additional rover orientation data, yaw, pitch and roll. yaw is shown on the map.
https://mars.nasa.gov/maps/location/api/configure/get?mission=M20 is the overall layer configuration. It has the urls of the geojson geometries.
It seem that the web site uses a terrestrial CRS (WGS84) for plotting. Perhaps the rover coordinates are actually for a Mars CRS. That may explain that slight offset depending on the base map projection.
And here is my take:
I am assigning CRS ESRI:104971 - Mars_2000_(Sphere) - Geographic to the geojson coordinates, and use the equirectangular projection for plotting which is native to the HiRISE mosaic.
The arrows show the yaw orientation at the way points.
The little circles along the path are where positions are actually provided in the traverse geojson.
We are getting outside the range of the EDL Rover Downlook imagery. Perhaps it is worth looking through those again to see if there is one covering the new terrain in higher detail than the 25cm HiRISE mosaic.
Map updated to sol 16. I hope for some feature names to add to it, eventually. I will have to re-think my earlier maps a bit. The sol 16 site is just a tiny bit outside the edge of the last map so I can probably adjust it.
It's great to see these alternative views of the traverse here.
Phil
Dont know if its the correct site to post this but looking at the orbital view, the rock pavement next to where the rover is sitting right now looks morelike sedimentary to me rather than a lava field and yet i am no geologist so who knows.
I did find a slightly earlier frame of the Rover Lookdown camera which has a bit of the current location and is higher resolution than the HiRISE mosaic. It is a bit blurry because the Descent Stage had not fully stabilized and is from a more oblique perspective. But the registration went pretty well. Here is how the map looks with that frame (and higher contrast):
The width of the traverse path is 0.5 m.
The boulders are imaged quite a bit better than in the HiRISE mosaic.
I revised my map from earlier to include the sol 16 drive.
Phil
Iteratively building these maps. I have added the two SuperCam target names now, one on each map.
Phil
Thanks as always Phil. This is a great resource.
For those of you who might want to navigate this trip with Google Mars/Earth, as well, I've prepared some overlays using the large https://astrogeology.usgs.gov/maps/mars-2020-jezero-crater-landing-site-controlled-orthomosaics created by the USGS that were mentioned earlier in this thread.
The overview map is 5322x5040 with 6m/pixel resolution:
... and to continue the discussion on registration of the json track data from the "Where is Perseverance?" page with the USGS basemap, here's the post-landing HiRISE image layered on top of the Google Earth tiles:
This is the sol 20 drive. The location should be good, the path is an estimate.
Phil
Here is my best estimate of the current location, at sol 20 after the drive:
The rectangle is the approximate foot print of the rover, to scale.
This is mostly based on analysis of this Navcam image:
Starting from the dark, small, almost boulder free crater in the middle ground (apparently a word), I believe one can identify sets of boulders to track back to the rover. I guess we will see soon enough.
The crater seems really smooth and may be a good arena for heli testing. There are a few ripples, so perhaps the rover would not venture inside.
My estimate was a few meters off. With the latest geojson:
The width of the path corresponds to the width of the rover (ca. 2.7m).
https://mars.nasa.gov/mmgis-maps/M20/Layers/json/M20_waypoints.json now also has a few more fields: distance, drive and elevation among them.
In the helicopter introduction last night, they mentioned that its range could be about 100m x 30m, after initial shorter tests.
For the Google Mars track, there's now an automatic update ability available for the client side. What this means is that Google Mars will check for an update every 6 hours (while GM is open) or you can manually refresh the track. This will download the track from my server. However, the track on my server is still only updated manually by me running a script so there will be some (human induced) latency until I fully automate the back-end (which will be soon).
Download & open http://vps78674.vps.ovh.ca/Mars2020/GoogleMars/updates/track-updater.kmz and move it to the "mars2020" folder on the GM side panel. You can delete the old "track sols 2-16" folder. The new "track-updater" folder will automatically refresh in the future. To manually refresh, there's a refresh menu item when right-clicking track-updater. If you want, you can change the refresh interval or disable it by going to the Properties>Refresh tab.
Here's a look at the current track:
The images for the last couple of days have not been helpful for making panoramas so it's taken a while to get to this map. Update to sol 23 - a drive back along the tracks away from the belly pan.
Phil
Here is a map using the latest geojson, with registered EDL downlook imagery. The width of the path is 2.7m, the black circles are 1m in diameter. The faint arrows show yaw as reported in the way points. The projection is orthographic, centered at the landing ellipse (77.4298 E, 18.4663 N).
Some members have observed, and I agree, that this thread has drifted a bit from its intent. For our new members, Phil's map threads have generally served as navigation/situational awareness reference resources on UMSF for every rover since Spirit to help us all follow the journeys in those ways. Naturally, some questions and observations occasionally pop up in them but this has turned into a full-blown tech discussion.
I was gonna create a new Mars Cartography thread, but lo and behold it turns out that http://www.unmannedspaceflight.com/index.php?showtopic=2743&st=80&start=80. 15 posts have been moved there, and I encourage all to please continue that most interesting and informative discussion there. Thanks!
Good idea.
I have adjusted the base of my intermediate scale map to include the Belly Pan location, so here is an update to sol 23.
Phil
This map shows feature names around the landing area mentioned at LPSC today. There are some diacriticals which I have not figured out yet, but which will be added later.
Phil
This is my previous map with the appropriate characters added.
Phil
The partial panorama in the early drives thread gives the path and location for sol 32.
Phil
Phil, I took your route map and superimposed a photo from JPL of the flight zone of Ingenuity. You can see they got very close to the drop off point with the latest drive.
https://flic.kr/p/2kNAz4ihttps://flic.kr/p/2kNAz4i
Thanks! Very useful.
Phil
Another map based on the NASA geojson with simulated wheel tracks, 2.7m apart, pills from the traverse data, yaw arrows at way points, the airfield target and the overlook position:
And a full map with more context:
We have just 5 images from sol 33 down from Perseverance as I write this, but with one Navcam and one rear Hazcam there is enough information to approximate the drive:
sol 33 update: The flight zone is 30m wide in this map.
full map
Quick update for the drive to the airfield on sol 34.
Phil
[quote name='Andreas Plesch' date='Mar 25 2021, 10:43 PM' post='251192']
sol 33 update: The flight zone is 30m wide in this map.
So nice. Thank you!
How did you place the tracks? Visual references or are they just parallel to the path?
Thanks Andreas. Keep up the great work!
sol34 update: larger airfield to avoid crowding, simulated tracks 2.7m wide from outer edge to outer edge (I think more correct), track marks 30cm wide. Flight zone 30m wide.
full map:
A special map for the area where the belly pan and debris shield were dropped. This is another use for the circular panoramas - they can be warped a bit to fit a HiRISE (or descent camera) image base.
Phil
Here's the latest addition to the Google Mars project I've been working on:
Interesting! Thanks.
Here is a map update for sol 43.
Phil
I have added recent drives and the helicopter deployment to my close-up map.
Phil
We had a good drive on sol 47, probably about as long as the longest one to date at 35-40 m or so - I don't know the path at the start of the drive yet. We don't have a full panorama yet but the location should be fairly good.
Phil
I mentioned in my last post that the raw-image metadata can be used to plot the position of the rover prior to the official geojson track being available and here's an example for sol 47. Image locations are the blue squares:
Another drive on sol 48, getting closer to the overlook.
Phil
Sol 49 - closer to the overlook, but not yet at the exact point denoted earlier. I don't suppose they really have to worry about being exactly on it. This location comes from the Hazcam projection I just posted in the Early Drives thread.
Phil
I had been away from my qgis setup. Here my update for sol 59, with new labels:
and the full map:
I tried my best to register the high resolution helicopter overhead perspective, using about 40 control points:
The helicopter lens seems to be wide angle, fish-eye, with heavy distortion away from the center. So I used rubber sheeting ( thin plate spline ) to generate a map:
Since I did not use the tracks for referencing, the good match between the actual and simulated tacks shows that referencing of the rocks went well, and that the base map was also well registered.
I registered the second oblique helicopter view along the flight zone, clipping the highly distorted, more distant view. Here is a composite map of the flight zone which Ingenuity traversed to today, probably for about 50m.
A short drive which I was not expecting on sol 65, pointed out by Paul in the other thread... Using Navcams I find a location hastily mapped here. I will fix up the base later.
Phil
For what it's worth I registered the third helicopter perspective (to the west) to the map:
Here the larger flight zone:
Thanks. Since I used rocks and pavement patterns to register the images to the EDL basemap, it was an interesting exercise to get to know a large number of these features more closely in the vicinity of the airfield, and some larger ones in the distance. With real photogrammetry and knowledge of the lens and camera orientation one could do a better job but this is pretty good on a cm scale.
Updated maps to sol66:
full map:
Just to think, we are mapping the first controlled flight paths on Mars!
I will have a map of flight paths eventually! For now an update after a short drive on sol 66, well behind Andreas in getting to this. I am reverting to a smaller scale map until I have a better sense of where we are going.
The offset between real positions and the JPL map continues - it's about 1 rover length. The maps on here are all corrected.
Phil
A mosaic of the four Ingenuity images, registered to a base map:
I used Thomas' straightened version (thanks !) hoping that it would behave favorably in the distance but I had to crop anyways. (In fact, I think it made interpolating between control points perhaps less robust than the original would have.)
Good stuff, Andreas!
Here is my more detailed map updated to sol 69. I will add descent images to the lower part soon.
Phil
http://vps78674.vps.ovh.ca/Mars2020/GoogleMars/ for sol 72:
another take:
https://user-images.githubusercontent.com/6171115/116959645-2e68d600-ac6c-11eb-99b7-4ff88ed8904a.png
A short drive on sol 73 crosses a sandy patch as shown at small scale here. The sites indicated by squares are where arm instruments were apparently used, though without daily updates I don't know much.
Phil
A sol73 map using the updated geojson for the traverse:
I'm still trying to decide what map coverage Ingenuity will get, but here is a first attempt covering the first 3 flights plus the landed location after Flight 4. I show the approximate coverage by Ingenuity's forward-facing camera based on mapping by Andreas and a tentative additional image, not yet released, looking north on flight 3.
Phil
I registered https://mars.nasa.gov/resources/25891/hirises-view-of-ingenuitys-fourth-flight-path/ and digitized the paths for flights 3 and 4:
Great work, Andreas. Here is a map for Ingenuity's flight 4 - the next flight will be added to this later. I have deviated a bit from Andreas's map by showing the return path leading to the actual landing point. Ingenuity landed east of its original position after flight 4, and of course the fifth flight will also depart from there.
Phil
How did you pinpoint the return point with centimeter-precision ("131.46 m")?
Thorsten
It's a GIS derived value from the midpoint to the landing point. There are of course uncertainties in Ingenuity's and midway point position.
Should have really rounded up the number.
After some thought I think they moved the azimuth of the south flight zone area slightly to the SE direction in order to fit the descent camera coverage.
https://mars.nasa.gov/resources/25900/nasas-ingenuity-mars-helicopter-fifth-flight-lands-in-new-airfield/
has a short video which includes this image of 'about where we landed':
This is a Mastcam-Z image pre-landing, roughly stretched to help estimate the landing location. By comparing with post-landing images I have added a likely landing point. It is a bit further out than on Kymani76's map, closer to the end of the previous flight. The 2 big rocks just above the midpoint of my arrow are visible in the descent image basemap.
Phil
Sol 84 - a drive to the west (a bit north of west really), possibly positioning for a nice smooth drive south to get closer to Ingenuity.
Phil
sol 84 update from the updated waypoint and traverse geojson, and with a rough estimate of Ingenuity at its new airfield:
Just a short drive on sol 86, to put a knobbly rock in reach. We are back in the area of my more detailed map.
Phil
Based on the flight 6 announcement and the high resolution color image from Ingenuity probably from when hovering high above its landing sight I made maps of the imaged area and of how flight 6 could look like:
Sol 91 - a shortish drive to the south, maybe 25 m. The location is based on a partial panorama.
Phil
The symbol is the approximate location of the helicopter landing after flight 5 - still hoping for a new picture after the latest drive to nail down the position a bit better. Field C is the (approximate) next landing site.
Here is another version of the map.
A larger map with the json traverse to the current site, the helicopter aerial image at the end of flight 5, now more carefully georeferenced, and a tentative flight 6 path, based on the narrative provided in the update news item. The current location of Ingenuity on the map may well be a little off.
This is my best guess at the moment for flight 6. I'm still not certain I have the end of flight 5 location correct. Flight 6 runs roughly SW for about 150 m, and where it stops it takes the aerial view out over the landscape, the one which has just been released. Then it runs south for about 20 m, and that's where the video starts. From there it runs NE and then turns a bit and moves north before landing. That landing point is right on Andreas's vector. Subject to modification!!! (as always).
Phil
I have plotted (rather roughly) the outlines of the oblique color press release view and the first frame of the video on the last map, and it's clear that my flight 6 path needs to be moved north, which will remove the need for the last little bend in the path. I will post a new version shortly.
Phil
I noticed that on the heli nav images at the vertical landing portion of flight 5, it is possible to draw close to radial lines through ground features, after contrast enhancement, which allow triangulation of the shadow and therefore of the landing location. As the projection from the fisheye lens appears to be centered on the image, the radial lines should appear straight on a map. I could then use my earlier map to get a handle on the position of Ingenuity after flight 5:
Sol 99 - we just had a short drive to another rock.
Phil
Yes, good work. I'm moving my flight 5 destination to comply with it. Here's an updated version of the map as it is at present. I'm still trying to decide if the Rice U. map Andreas linked to should be used for flight 6.
Phil
Update to sol 102, with flight 6 from the new JPL map.
Phil
Update to include the sol 103 drive and the location of the next helicopter landing site, which I am assuming will be called Field D.
Phil
The geojson for the helicopter flight path:
https://mars.nasa.gov/mmgis-maps/M20/Layers/json/m20_heli_flight_path.json
and helicopter waypoints:
https://mars.nasa.gov/mmgis-maps/M20/Layers/json/m20_heli_waypoints.json
Here is my take for sol 103 using now the geojson for the helicopter path:
Very nice map! Here is my version updated to sol 104.
Here another take for sol 104 using the geojson:
A 28m drive on sol 105, penciled in here, based on Hazcam images:
And my map updated - the new position and route just taken from the JPL map at this stage - but correcting for the offset in the online map.
That offset has persisted since the first map on the website. Either the rover locations and path are slightly off or the base map is slightly off relative to absolute coordinates - I don't know which. But there is a clear misregistration between the path and the base map. It's only about 1.5 or 2 m so not a big concern.
Phil
My map update to sol 107 with the Ingenuity flight and a short drive.
Phil
A shortish drive, 20 m or a bit more, on sol 108. I only have Hazcams to go on so far but it looks like we are getting close to the sol 91 helicopter landing site.
Phil
A large sol 107 map with added overlays of helicopter RTE images carefully registered to the HiRISE map. Perhaps the rover will venture into those areas.
A sol 109 map focusing on the crater and route to Ingenuity.
The map for sol 110 shows the simulated tracks of the last drive and to the South the area of the path to a potential first excursion into the Seitah.
Since there is now a JPL provided sol107 heli location, here an update to the sol110 map, looking ahead to the south, centered on the border of the Seitah region.
The JPL location is the open circle next to the yellow marker. The simulated rover track is to scale.
Sol 116, a drive which brings us close to the edge of Seitah, probably to enter a safe path to the south.
Phil
Here my json based map for sol 116, with an estimate for the destination of flight 8. on or after Monday, 6/21.
Sol 120 - no rover movement but a nice Ingenuity flight to Airfield E. The location is from the descent image sequence.
Phil
Here my sol 121 map with Ingenuities new location:
The sol 122 map after the geojson update, with a larger view of the Seitah:
Sol 122 map update. Looks like this could lead in to an interesting examination of the bright rocks in Seitah.
Phil
sol 123 update with geojson path and black contours on brighter imagery:
Sol 126, a drive to the south, maybe within view of Ingenuity for a close-up image.
Phil
Sol 127, continuing south. There doesn't seem much point going further south here because of rough terrain ahead, so we will probably turn east and drive through Airfield E, and then south again.
Phil
Thanks, very helpful. I am away from my setup so no updates from my side for a while. Using the great https://captainvideo.nl/marslife/index.html, one can plan a path to the eastern depression where Ingenuity is located, but I think also to the west towards and perhaps down for a careful dip into the Seitah.
And to finish this page of maps, a convoluted drive on sol 129. Remember my maps are made to fit pages in a book, so I will not be extending this one, I will be moving to a new one.
Phil
The long drive on sol 130 goes around that old crater. I mapped the path from the available images and left it dashed where I can't see it. I can fill that in from the JPL map later.
EDIT: we will also have passed the 1000 m mark on this drive.
Phil
Only a partial panorama so far but I think I have a good location for sol 131. I added the next airfield location at the bottom of the map.
Phil
That took a bit of figuring out! This map shows the 9th flight of Ingenuity and the new airfield location. I'm assuming a straight flight path.
Phil
Sol 134, about 90 m drive to the south, making pretty good progress through rough terrain.
Phil
Sol 135 map - the dashed part of the line gets filled in when I have the JPL map.
Phil
Sol 137, continuing south around Seitah - and not too far from its southern end (in this region - it extends further south if you go further west).
Phil
My take on the current Perseverance and Ingenuity maps:
I was not expecting a drive but we had one on sol 153, about 100 m south. This presumably continues the quick run around the area to characterize it before selecting final sample sites.
Phil
..
Sol 157, a short drive to the southeast to put the rocks in the workspace.
Phil
Sol 157 update. For Ingenuity I'm using JPL's track, although I've seen other solutions.
Map update to sol 168 - very rough as we don't have a full panorama or an updated map on the website yet.
Phil
Moving on, it's likely an unusual situation that they'll resolve by drilling and taking another core sample. There is probably nothing to be gained by sitting around and head-scratching. We'll have an interesting Core#1 to open in a few years.
--Bill
removed (wrong thread)
Sol 169, with a corrected path for 168. "We'll have an interesting Core#1 to open in a few years" - no, that one will never be returned, it would take the place of a core packed with science so we'll have to wait until the Jezero Museum opens its doors.
Phil
sol 170 map update - moving fast towards Seitah South.
Phil
Hot tall are some of those dunes?
Seeing how Phil is away.
Here's a screenshot of the interactive map for sol 175 with a few annotations.
Here is a large map, showing the both the location of Perseverance and Ingenuity. Hopefully, I will have now some time to improve those (by labels, and mapping aerial views), although more deadlines are coming up.
And here a very large map of the rover's journey, with surroundings. There will be jpg artefacts due to very high compression:
https://user-images.githubusercontent.com/6171115/130161729-f28bbaad-518f-45f8-be39-0346e15feafa.jpg
(Click on the top or bottom margins for the high resolution version)
I have updated my map to include drives to sol 177 and the corrected Ingenuity flight path. We just passed the 2000 m point on the drive and I will add a marker next time.
Phil
My take on sol177. I added cumulative travel distance for the rover, and per leg flight distances.
A new map tile for sol 178, and this map covers the recent flights by Ingenuity as well. The last flight route is estimated using an analysis here:
https://twitter.com/65dbNoise/status/1429093549929283585
except that I think the landing point is wrong in that map.
Phil
And here are two maps giving the names of Supercam targets up to sol 90 from the new PDS release.
Phil
Sol 180 - moving a short distance to reach the target at Citadelle.
Phil
A new map along "Artuby" ridge, with sol180 updates, and better mapped path for flight 12 using the navigation images. Unfortunately, the first leg is poorly constrained sofar.
An earlier map updated with the new name given in the rover update - as suggested by Paul. I'm always on the lookout for names to add to the map. This map also shows the name Artuby referring to the ridge, not a specific point on it.
Phil
Mod,
Rimfax discussion not really appropriate for the route map thread. Could it be moved to another thread or even one dedicated to Rimfax?
ADMIN: Done. Moved to new http://www.unmannedspaceflight.com/index.php?showtopic=8650.
Sol 193, Ingenuity made its 13th flight out across Seitah and back. I don't know the path yet but the early images show where it landed, back in Airfield H.
Phil
I have been plotting the helicopter color images on the map - the position of the foreground in each suggests that some paths need to be modified. We often get the plan, not the actual path.
Stereo pairs are combined into a single outline in this version.
Phil
These are the large color camera images, not the small and much more numerous navigation images.
Phil
So you said. But the Color and Nav cameras are fixed and it follows that both cameras are seeing non-axial motion. It is interesting that Ingenuity does not have to invariably fly nose-forward.
On my demo co-axial I fly nose-forward because that is how I am programmed. But I can shift the camera view in x- and y- if I need to.
--Bill
Map update to sol 199. The name Artuby is confirmed as applying to the whole ridge. I still don't have a path for the last Ingenuity flight.
Phil
'Phil Stooke' ... I still don't have a path for the last Ingenuity flight...
I don't know where they get their data, but RICE CRC have this for flight 13 https://perseverancerover.spatialstudieslab.org/?page=page_0&views=view_38%2Cview_55%2Cview_53%2Cview_13%2Cview_24%2Cview_47
Thanks - I was just in the process of creating my own version with the DTE images:
Sol 200 - a very long drive, about 160 or 170 m, a record for Perseverance and longer than any drive by Curiosity.
Phil
Out into the sandy wilds of South Seitah. Or if you prefer, Seitah South.
Phil
Sol 204. This might be the next drill site - if it passes its medical.
Phil
Well, it didn't pass its medical by the look of it. Sol 210, another drive. The single front Hazcam image we have is enough to give a location but the path I show is just a guess until I know more.
Phil
Your dedication to mapping is much appreciated Phil.
Is Perseverance parked in her Conjunction parking space since Sol 210?
Yes - no more moves for a while.
Phil
Here is the first map of my sequence with the new names i have been able to track down, thanks to help from Paul and Mike.
Phil
Zoom into the landing site with new names. I don't know the story behind the 'Daren Lee Memorial' but Lee seems to have been a former JPL robotics engineer. The name comes from here:
https://sketchfab.com/cdt59#
(Thanks to Paul for the tip)
Phil
Here is an update of the current map showing names I have gathered recently.
Phil
New drive, new map. This is for sol 237 with a drive towards the next sampling area.
Phil
We had a drive up to the outcrop on sol 238. This site is on the other side of the ridge called Martre from the last abrasion at Bastide.
Phil
A small adjustment to the position on sol 239. Perseverance is now sitting at the base of the outcrop imaged on sol 238 (before the sol 238 drive, so at the sol 237 location) and shown here by Tau. But the rover is facing away from the outcrop at the moment.
Phil
I have added Ingenuity's flight 15. It landed a little north of the targeted site. I am assuming it will be called Airfield F again.
Phil
I have added Supercam names from PDS to one of the earlier maps. I will update others as I can get to them.
Phil
Perseverance has started its return journey to the landing site (presumably), and to reduce clutter and confusion in the maps I will make a separate map for the return journey, both for the rover and for Ingenuity. This map is updated to sol 279 for the rover and omits the last two return flights of Ingenuity. The next map will follow both of them.
I modified the straight line flight of Ingenuity on sol 163 based on my own mapping of Ingenuity images, but I may have exaggerated the kinks in the path. That might be partially straightened after I have thought about it a bit more.
Phil
A small move on sol 283, presumably setting us up for a study of some interesting target, maybe the sand ripple.
Phil
Phil, I'm sorry for presenting the table in this manner: this forum has no BBcodes for displaying tables copyable as text.
The forum engine also didn't allow me to attach the *.geojson file which was used as the data source. Its download link at NASA site (mission map nicknamed 'Where is the rover') is uncopiable - but to explain in words, it is available in the hidden 'Export to JSON' under the 'hamburger' button at top left.
I built this table in Excel to verify the flight lengths displayed in the https://mars.nasa.gov/technology/helicopter/#Flight-Log (column "f.log") with the calculations based upon areocoordinates and the so-called "northings" / "eastings" (column "calc") which I treat as offset from equator / zero meridian in metres.
Flights marked with the asterisk (*) are hops, roundtrips and other multileg 'brackets' where data is not comparable by default: the object of my investigation are straight routes where "f.log" must be equal to "calc".
Flight f.log calc northing easting N E
1* 0 0,05 1093314 4354502 18.44486 77.45102
2* 4 0 1093314 4354502 18.44486 77.45102
3* 100 0,76 1093314 4354502 18.44486 77.45102
4* 266 6,1 1093313 4354501 18.44486 77.45101
5 129 130,81 1093313 4354507 18.44486 77.45112
6* 215 100,75 1093183 4354522 18.44267 77.45139
7 106 106,3 1093124 4354441 18.44166 77.44994
8 160 160,48 1093018 4354453 18.43988 77.45015
9 625 620,33 1092862 4354489 18.43724 77.45079
10* 233 97,51 1092319 4354188 18.42808 77.44545
11 383 388,24 1092319 4354091 18.42808 77.44545
12* 450 26,19 1092590 4353813 18.43266 77.43878
13* 210 12,14 1092592 4353840 18.43269 77.43924
14 2 1,53 1092603 4353834 18.43287 77.43915
15 407 410,51 1092602 4353836 18.43286 77.43917
The ratio "reported / calculated" for the straight flights shows the tendency of undervaluation (5 cases from 6); the average is 0.9943 or minus 0.57%
5 0.9861631374
7 0.9971777987
8 0.9970089731
9 1.0075282511
11 0.9865031939
15 0.9914496602
One data entry in NASA's json is corrupt: the same coordinates are shown for fligts 10 and 11. Actually while the N value seems to be close to equal, the E values must differ (see airfields F and G).
Question 1: what figures for these airfields you use in your maps?
Question 2: is there any hope for the total recalculation of these waypoints after helicopter shall return (approximately) to its starting point at Wright Brothers a/f when figures shall explicitly show all errors in previously calculated coordinates / flight lengths accumulated in this 'dead reckoning'?
p.s. I shall be grateful if anybody posts here the direct link to the full set of four json files of waypoints/paths for Perceverance / Ingenuity. Thank you.
I don't use any figures for my airfield locations. I plot them on the HiRISE base image by matching the features seen in the Navigation Camera descent images - the last few images of every flight, usually the first to be transmitted. My locations are relative to the base image, not to any coordinates. In an ideal case they would be the same.
Phil
Map update to sol 285, with the name I misread is Gras corrected to Bras (the original source was too small to read clearly), and two names at the sol 285 location found By Paul. Thanks to all who contribute to this effort.
Phil
Thanks for the updates!
--Bill
Hi, everybody! Please excuse me for the question that seems strange even to myself but anyway I must ask it.
Is this screenshot a fake, or I don't know some entries in the "Where is the rover" map/JSON service at https://mars.nasa.gov/maps/location/?mission=M20 ?
The fact is, that up to this time (06:45 GMT) the map still returns the position for Perseverance's sol 343, and the last entry in Ingenuity's JSON is for sol 292 / flight 18:
{"sol":292,"name":"HELI pos18","easting":4354450.039,"northing":1092802.59,"elev_geoid":-2572.994,"lon":77.45010229,"lat":18.43624068},"geometry":{"type":"Point","coordinates":[77.450102,18.436241,-2572.994]}}
The scecial point of my concern is the label "Flight: 19". I tried all the settings in the left sidebar called with a 'hamburger' icon, but all the attempts to invoke this type of label (like labels "sol" and "length") failed.
Another screenshot from the same source:
Note zero values for 'Distance driven' in the header line. However the location of the blue helicopter sign seems close to the actual landing spot of flight 19.
Thank you,
- Cherurbino.
Not fake. I just reproduced it myself. Display the map and then move the cursor to the location of one of the dots representing waypoints along the route. The dark box with white text will appear to tell you which point you are pointing at (e.g. sol 130 for the point just south of your label). Move to a point between dots and you get the drive length. They have added Flight 19 as a pop-up label if you move the cursor close to that location even if the helicopter path is not displayed.
Phil
It's a little hard to tell what you're asking, but if you export the heli location to GeoJSON you get
I replied to Cherurbino privately but the solution to the problem may be of interest so I will mention it here. The online map behaves differently depending on the browser being used (I didn't think to check operating systems but I suppose that might also be an issue). If it doesn't do what you expect, try another browser. Cherurbino thought this whole exchange should be removed, but it might be useful to keep it as a record of the issue.
Phil
I think the scale bar in the upper left of your map is incorrect, if I compare your map to the Perseverance Location Map (https://mars.nasa.gov/mars2020/mission/where-is-the-rover/. What is the size of the grid on your map?
Hi everybody, hi Phil!
A year ago Phil started this thread with a blank map.
Check out the landing thread, eg http://www.unmannedspaceflight.com/index.php?showtopic=8591&st=90&p=249830&#entry249830 or http://www.unmannedspaceflight.com/index.php?s=&showtopic=8591&view=findpost&p=249822
Regarding the planned helicopter and rover routes, it was written https://mars.nasa.gov/technology/helicopter/status/366/dusty-flight-19-completed-and-looking-ahead-to-flight-20/:
A couple more of my maps with extra names taken out of the PDS:
If I'm not completely wrong when comparing Navcam and HiRISE images, the rover made a 200 m drive on sol 384.
The estimated coordinates are approximately 77.4620°E 18.4571°N
Green line: planned rover traverse
Thank you Mark.
Here is a new version of flight 23 map, updated with latest the JPL track.
Ingenuity didn't fly in a straight line, but headed north first and then made sharp turn to the west. It means they are flying very close to the planned track.
I figured that.they would avoid flying over that hill.and stay in the flat area.
--Bill
I never did that in the past, but a map of what I think is the last known location of the rover, using my last panorama :
Hi, everybody! Yesterday the new https://mars.nasa.gov/news/9170/ plan was published. May I ask anybody to draw the arrows for “Cape Nukshak” and “Hawksbill Gap” mentioned there? Thank you.
--Cherurbino
hi
Got the location from @dejasu and set them on the Uberlin Hirise map
Hope that helps
Fred
Map with contour lines : https://maps.planet.fu-berlin.de/jezero/
I'm sorry but I had some earthly work that kept me away from Mars mapping, but finally found some time to update my maps.
I noted that they are tinkering a lot with a geojson (like renumbering sols), which made my work a bit more complex (to track all the changes).
I also reworked the distance grid as well to make it more precise (note its rectangular appearance, where latitude axis is shorter than longitude's)
So here it is, update to sol 426 for Perseverance and flight 28 for Ingenuity.
While busy with other things I am still collecting names - but there have been very few lately. I don't know the exact locations yet for Rocky Top (probably off this map to the north) or Devils Tanyard.
(I will post from time to time...)
Phil
The new location map from https://fosstodon.org/@65dBnoise/108476947410723316
This message was updated after flight 29 -- Cherurbino
This is what I have so far for names. I can't guarantee all of them are in the right location (e.g. Hughes River Gap).
Phil
Trying to keep up with names. Paul has helped by pointing some things out to me, much appreciated. I am now pulling names out of the Analysts notebook and will post more maps soon, but there were almost no names given along the rapid traverse around the top of Seitah.
Phil
This map goes back earlier with a few names from the drive north after the Seitah sampling.
A particularly significant point is the location labelled '350', the end of drive location on sol 350. That drive was not documented with the usual end of drive panorama and the location shows up as 351 on the mission map. The real 351 location is further along the path, and the map misleadingly suggests the '350' point is a waypoint along that drive. The text of the Analyst's notebook makes it clear there was a sol 350 drive and the raw Navcam images for sol 350 show stages along that drive. The rear Hazcams for the start of sol 351 show the same location before the 351 drive. So this 'stealth drive' has not been shown correctly on any map up to now.
Phil
Yes, it was.
Putting together some details from earlier in the mission. Here is a map of the Issole region showing the rover positions at the various stops arounmd the outcrop.
Phil
Quick update to sol 543. I'm making maps to record names, and will post them from time to time. No, I don't really have time for this!
Next, the previous map of this area with names...
Phil
Some recent maps I am using to document names and helicopter flights.
Phil
Hi Phil-
Looks like a typo on the latest (and wonderful as always) Perseverance map- the "541-542" label is used in two locations.
John
Oops - yes, should be 541 and 542 at the two points. I don't know where that came from. Will fix shortly.
Phil
This is the corrected map. Good job I have an army of proof-readers out there! Corrections are always welcome.
Phil
Screen captures of the interactive map: Shows the rover's position after the long drive during sol 555 (219.9 m / 721.47 ft) including an interesting diversion before crossing another TAR, it also shows the location of 'Enchanted Lake' about 20 meters northeast of the rover's sol 555 location. Also shown the helicopters position after flight 31 on sol 550 (97.7 m / 321 ft)
The calculated distance between the two craft is currently 857.7 m / 2814 ft. Communications between the craft remains good with 187 (flight 31) images received from the helicopter after the drive.
Here is a map of the eastern part of future potential traverse paths (white lines) for Perseverance.
Thick contour lines every 10 meters, thin lines every meter. Numbers are sols on the past traverse.
The future potential paths are digitized from the map shown at the https://youtu.be/9vZVcI1gwEU?t=1715 on 2022-09-15 .
"Screen captures of the interactive map: Shows the rover's position after the long drive during sol 555 (219.9 m / 721.47 ft) including..." (Paul)
Thanks Paul. Ingenuity has to be the Epic engineering story on Mars. I am astounded that she keeps going since she is a much lighter and simpler mechanism than the Rovers. I would have expected the batteries to have expired by now.
--Bill
"Here is a map of the eastern part of future potential traverse paths (white lines) for Perseverance..." (Tau)
That is a tremendous map format, and especially that it shows potential future paths.
--Bill
Yes, it's a very nice map.
Here is a quick update to the present time showing the latest helicopter flight on sol 561 and a few names which Paul has been helping me track down.
Phil
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