InSight Surface Operations, 26 Nov 2018- 21 Dec 2022 |
InSight Surface Operations, 26 Nov 2018- 21 Dec 2022 |
May 6 2019, 03:34 PM
Post
#571
|
||
Senior Member Group: Members Posts: 4246 Joined: 17-January 05 Member No.: 152 |
I'm not sure what issue you're actually reacting to. My original comment was about the recent press release cloud and sunrise/set animations, especially for the ICC. This is a frame from that animation, for which the caption reads "This color-corrected version more accurately shows the image as the human eye would see it": It's hard to believe such saturated purples and cyans are accurate, given all the previous imaging of the sky, so my original comment was that perhaps they meant to say "false colour". As Deimos suggested, maybe instead large errors were introduced in the matrix conversion to sRGB, since that matrix will have to amplify small differences between G and B channels due to their similar spectral responses. |
|
|
||
May 6 2019, 05:39 PM
Post
#572
|
|
Senior Member Group: Members Posts: 2511 Joined: 13-September 05 Member No.: 497 |
It's hard to believe such saturated purples and cyans are accurate... Well, it is after sunset and the martian sky is bluish at sunset, and then someone may have put a strong log stretch on it to simulate the eye response? Who knows, these true color things are slippery. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
|
|
|
May 7 2019, 03:48 AM
Post
#573
|
|
Member Group: Members Posts: 470 Joined: 24-March 04 From: Finland Member No.: 63 |
Interesting Mole Update 'DLR HP3 Blog' link QUOTE Depending on the outcome of the diagnostic hammering, our next operation could be using the arm to load the support structure close to the fore-right-foot (the one you see in the image above) or the ground right next to the support structure near the tether box. I don't quite understand the operation plans above. Are they talking about moving the frame of the mole? -------------------- Antti Kuosmanen
|
|
|
May 7 2019, 04:41 AM
Post
#574
|
|
Senior Member Group: Members Posts: 2428 Joined: 30-January 13 From: Penang, Malaysia. Member No.: 6853 |
I don't quite understand the operation plans above. Are they talking about moving the frame of the mole? They way I'm reading this - Is that they intend to apply load to the housing structure with the robotic arm (just above the foot pad you see in the image), I guess this is to prevent the housing moving during the test and thus compressing the regolith enough to either let the mole break through the duricrust and or increase the friction on the mole's hull so the whole mole enters the regolith. |
|
|
May 7 2019, 06:28 AM
Post
#575
|
|||
Senior Member Group: Members Posts: 1083 Joined: 19-February 05 From: Close to Meudon Observatory in France Member No.: 172 |
It's hard to believe such saturated purples and cyans are accurate, given all the previous imaging of the sky, so my original comment was that perhaps they meant to say "false colour". As Deimos suggested, maybe instead large errors were introduced in the matrix conversion to sRGB, since that matrix will have to amplify small differences between G and B channels due to their similar spectral responses. Dear Fred, I must agree with your assumptions. Here are some color-processed VL1 'sky-dynamics' pictures taken at sunrise (with fog) and at sunset. The Martian sky has indeed a bluish halo, but near the Sun, and the rest is amber-colored (i.e. a desaturated salmon pink). Enjoy |
||
|
|||
May 7 2019, 01:28 PM
Post
#576
|
|
Senior Member Group: Members Posts: 1582 Joined: 14-October 05 From: Vermont Member No.: 530 |
They way I'm reading this - Is that they intend to apply load to the housing structure with the robotic arm (just above the foot pad you see in the image), I guess this is to prevent the housing moving during the test and thus compressing the regolith enough to either let the mole break through the duricrust and or increase the friction on the mole's hull so the whole mole enters the regolith. Not without parsing things carefully, I read it the same way. They mention "applying load" at either of two places. The support structure, or the ground adjacent to the support structure. Holding the structure might give the mole more leverage. Pressing on the ground might make things more cohesive beneath the surface. We're talking about the DLR blog |
|
|
May 7 2019, 06:58 PM
Post
#577
|
|
Senior Member Group: Members Posts: 2511 Joined: 13-September 05 Member No.: 497 |
It's hard to believe such saturated purples and cyans are accurate, given all the previous imaging of the sky, so my original comment was that perhaps they meant to say "false colour". I sat down this morning with Justin Maki and looked at a bunch of color-corrected Insight images. Justin has, IMHO, done a spectacular job with this and most of the images are really nice. This particular one was obviously very dark and then it was simply linearly stretched on the clouds, which make them a lot more contrasty than they would really be. But the underlying blue tint is real. I encourage everyone to look at the color-corrected versions when they get released to the PDS. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
|
|
|
May 7 2019, 11:22 PM
Post
#578
|
|
Senior Member Group: Members Posts: 4246 Joined: 17-January 05 Member No.: 152 |
Thanks a lot for asking about this. For sure if a linear stretch includes a constant term (ie if the black point is shifted, so the darks are clipped) then you can get a boost in saturation. Conversely you can tone down the saturation in this image with another linear stretch (with black point shift). The upper right corner of the image does appear to be clipped.
The palette available in these 8-bit gifs can also do wonky things to colours. |
|
|
May 9 2019, 12:23 AM
Post
#579
|
|
Senior Member Group: Members Posts: 1418 Joined: 26-July 08 Member No.: 4270 |
I think we're making progress...?
Compare https://mars.nasa.gov/insight-raw-images/su...0000_0693M_.PNG https://mars.nasa.gov/insight-raw-images/su...0000_0704M_.PNG The whole HP3 assembly is moving again. (animated .gif attached) -------------------- -- Hungry4info (Sirius_Alpha)
|
|
|
May 9 2019, 02:18 AM
Post
#580
|
||
Senior Member Group: Members Posts: 2428 Joined: 30-January 13 From: Penang, Malaysia. Member No.: 6853 |
I think we're making progress...? ....The whole HP3 assembly is moving again. (animated .gif attached) I think they were hoping to see some movement of the science tether in the housing window highlighted in this image, I've sampled the frames from sol 158 and can't see any movement of the tether with my ageing eyes |
|
|
||
May 9 2019, 02:31 AM
Post
#581
|
|
Senior Member Group: Members Posts: 1418 Joined: 26-July 08 Member No.: 4270 |
Here's a far better animation showing the movement of the HP3 shaft by landru79.
https://twitter.com/landru79/status/1126141561354498048 -------------------- -- Hungry4info (Sirius_Alpha)
|
|
|
May 9 2019, 06:42 AM
Post
#582
|
|
Senior Member Group: Members Posts: 1043 Joined: 17-February 09 Member No.: 4605 |
The footing seems to have remained stable compared to the significant movement observed in the last (Sol 92 - 3rd March) operation of the mole.
|
|
|
May 15 2019, 02:29 AM
Post
#583
|
||
Solar System Cartographer Group: Members Posts: 10151 Joined: 5-April 05 From: Canada Member No.: 227 |
Off to the northwest from the landing site there is a hill. It was very faintly visible in early panoramas posted here, and I was just looking at it again in recent images. Here's a view of it accompanied by a version of the same image stretched vertically (Me-o-vision style) to make it easier to see the shape. It looks as if it has a lower extension to the right which I had not seen before. This may help identify it in HiRISE images (I had 2 candidates). This is a composite of two recent images.
Let me know if you spot any other small distant hills like this. There is a distant long ridge to the east which is easy to spot on orbital images. Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
|
|
||
May 24 2019, 03:26 AM
Post
#584
|
|
Senior Member Group: Members Posts: 2428 Joined: 30-January 13 From: Penang, Malaysia. Member No.: 6853 |
The InSight raw image server was not updated with new images for about a week, but it's now back on line and all the new images are once again coming in, and hopefully the first PDS release (1a) will be made available soon (May 24, 2019). Thanks to Phil for the earlier heads up on the planned date.
|
|
|
May 24 2019, 10:56 PM
Post
#585
|
|
Newbie Group: Members Posts: 10 Joined: 30-May 08 Member No.: 4166 |
Translation of https://www.seis-insight.eu/fr/actualites/4...is-data-release
First public availability of SEIS seismometer data The first seismometer recordings from the seismometer SEIS on InSight will now be available for all! From friday 24 May a set of recordings covering a period of 3 months, from 26 November 2018, the day of landing, to the end of February 2019, will be freely available under the heading "Science" on the official SEIS website. https://www.seis-insight.eu/en/science/science-summary Since being deployed on the surface of mars, on the equatorial plane of Elysium, the seismometer SEIS has been recording the faintest movements of the red planet. The signals the instrument records are transmitted daily by UHF to a fleet of satellites orbiting mars which are tasked with relaying the data packets to earth, thanks mainly to the network of powerful antennas provided by NASA's DSN. Having been recovered in the control rooms of JPL in California, the data is sent to SISMOC, the seismometer operations center run by the french space agency CNES in Toulouse. Once verified and analysed, the data is transformed into an international standard format called SEED, well known to seismologists everywhere. From Toulouse, the data is sent to the Mars SEIS Data Service (MSDS), a service of the data center of the Institut de Physique du Globe (IPG) in Paris, where it is verified once again before being archived and transmitted to the InSight science team through the SEIS Data Portal (SDP). The MSDS is also in charge of making the data available to the public through three international venues: NASA's Planetary Data System in the USA, the Incorporated Research Institutions for Seismology (IRIS) also in the USA, and finally the data center at IPGP in France. Starting this Friday 24 May at 9pm in Paris access will be provided to data recorded 3 months ago on the red planet, from 26 November 2018 to 28 February 2019. This first data set contains only uncalibrated data. On 26 June, a calibrated data set covering the period from 26 November 2018 to 31 March 2019 will be made publically available. As for derived products, the first ones will be available starting in October 2019. Some schools participating in the program called "Sismo à l’école", coordinated by the GéoAzur lab in Nice, will also receive data from mars and will be able to integrate it into their teaching. Under the leadership of the educational program set up for InSight, many classes at colleges and high schools had already been prepared to use data from SEIS by participating in blind tests run by the Ecole polytechnique fédérale in Zurich, a member of the InSight mission. As part of these full-dress rehersals, students learned to use data visualization tools to look for potentially interesting events. Now it will be real data from mars circulating through the network to hundreds of institutions, and the students will likely experience the same anticipation and excitement that the mission seismologists are familiar with. The transmission of data to classes in this program will offer them the unique opportunity to follow in almost-real time the seismic activity of another planet. To find out more Access SEIS instrument data through the official site https://www.seis-insight.eu/en/science/science-summary Web site of the IPGP data center http://centrededonnees.ipgp.fr/ SEIS data on NASA's PDS https://pds-geosciences.wustl.edu/missions/insight/seis.htm IRIS https://www.iris.edu/hq/ "Sismo à l’école" for InSight https://insight.oca.eu/fr/accueil-insight Open access reference article in english giving an exhaustive description of SEIS Lognonné, P., Banerdt, W.B., Giardini, D. et al. Space Sci Rev (2019) 215:12. https://doi.org/10.1007/s11214-018-0574-6 |
|
|
Lo-Fi Version | Time is now: 24th April 2024 - 09:05 PM |
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |