My Assistant
| Posted on: Jan 22 2006, 09:47 PM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
Obviously a little hard to see much in that anim gif, but I've done my best to try and replicate as close as I can what that might have looked like in real time - unlikely to be as accurate as the previous one, but I made the duration of the eclipse from 1st to last contact as about 37 seconds. Doug |
| Forum: Opportunity · Post Preview: #37700 · Replies: 33 · Views: 37656 |
| Posted on: Jan 22 2006, 08:42 PM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
Helen and I were at a place called 'Symonds Yat' today - a high vantage point over a large bow in the river Wye on the border between South Wales and England. There was an exquisit layer of fog across the whole of the valley below, for dozens of miles around. At one point, I could cast my shadow onto the fog below, and around me, was a small rainbow. The pictures don't really do it justice, so I stretched one a little to show the effect but it was quite astonishing! Doug |
| Forum: Chit Chat · Post Preview: #37690 · Replies: 4 · Views: 5681 |
| Posted on: Jan 22 2006, 07:56 PM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
But - that will put them in a good position to image their dark sides in Jupiter shine Doug |
| Forum: New Horizons · Post Preview: #37687 · Replies: 42 · Views: 300414 |
| Posted on: Jan 22 2006, 07:49 PM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
Heck - the images are down but they're totally wierd Doug (PS - something done with what I THINK is actually an internal reflected images of the sun within the images - real-time-sim to follow) |
| Forum: Opportunity · Post Preview: #37686 · Replies: 33 · Views: 37656 |
| Posted on: Jan 22 2006, 09:43 AM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
It's not uncommon for LV's to turn, quite a lot, after SRB sep. If you look at the rocket-cam views from Spirit and Opportunity - you can see, once SRB sep has occured, the vehicle turns quite a lot. I'm not sure why, but perhaps it's because they have to be in a particular direction for SRB-jet for range reasons, and THEN can pitch to the launch heading they want? Doug |
| Forum: New Horizons · Post Preview: #37639 · Replies: 571 · Views: 386067 |
| Posted on: Jan 21 2006, 10:04 PM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
QUOTE (ljk4-1 @ Jan 21 2006, 09:47 PM) Viking 1 had the shadow of Phobos pass right over it: I know - that's why I want to see them try a Navcam movie looking at the ground during one - because we know it makes a lot of difference to the terrain. Doug |
| Forum: Opportunity · Post Preview: #37580 · Replies: 33 · Views: 37656 |
| Posted on: Jan 21 2006, 06:33 PM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
Obviously retro reflectors work out to 400k km, but how far out would they work beyond that? Perhaps one could do radar reflection using Arecbo / DSN instead? Also - there's no real way of knowing, (perhaps less so with the solid 48b than a liquid upper stage) what potential small forces are being generated by outgassing of remaining fuel, its exact mass etc. Doug |
| Forum: New Horizons · Post Preview: #37546 · Replies: 42 · Views: 300414 |
| Posted on: Jan 21 2006, 11:09 AM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
Off you go and read the Steve Q'n'A Doug |
| Forum: Spirit · Post Preview: #37500 · Replies: 44 · Views: 53874 |
| Posted on: Jan 21 2006, 11:07 AM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
Perhaps it is just part of the structure required to hang the thing from Skycrane? Doug |
| Forum: MSL · Post Preview: #37499 · Replies: 61 · Views: 77658 |
| Posted on: Jan 21 2006, 11:02 AM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
A phobos one was scheduled for a sol or two ago, but I've not seen the images come down. I intend to pull the same trick with that however. Doug |
| Forum: Opportunity · Post Preview: #37498 · Replies: 33 · Views: 37656 |
| Posted on: Jan 21 2006, 11:02 AM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
QUOTE (Nirgal @ Jan 21 2006, 12:26 AM) So it's really the question if it would not be more advantageous to try to reach Victoria as a high prio goal first and then use the precious remaining rover life time *there* in order to study what could be entirely new scientific discoveries. So the rover dies in 200 sols, 500m short of Victoria, having done no science for 200 sols There has to be a compromise, there are unique, new discoveries to be made right here - and to abandom the science we can see, for the science that we may not see, is a nearly wreckless strategy. Yes - we all want to get to Victoria and see across that new crater and the amazing vista it will offer - but let's remember we may never make it anyway, and to make the assumption that abandoning science where we are will guarentee an arrival at Victoria is wrong. I'm sure once the work at Erebus is done, we'll see good driving. The arm-issue hasnt helped, but that was a 56 sol period where the decision wasnt down to any choice - it was simply going to take that long to make sure the rover was fit to drive. A few days of festoon observations, perhaps a couple more sites of IDD work around erebus and up to Mongollon rim, then navigating a route thru the remaining etched terrain. It's the same argument that's been had a thousand times - and I still honestly believe that the only people who can make the right call on the balance between motion and science are those who built the rovers and designed the instruments - only they can judge if the potential for a new target is worth forgoing a local one. Doug |
| Forum: Tech, General and Imagery · Post Preview: #37497 · Replies: 23 · Views: 27227 |
| Posted on: Jan 21 2006, 10:55 AM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
I was a wreck - I don't think I've ever been as nervous about a launch as NH - I was hands-over-face-saying 'go go go go' in that quiet way you see people doing at the launch site - not even the MER launch had me so nervous. It's astonishing what effect these missions can have Doug |
| Forum: New Horizons · Post Preview: #37496 · Replies: 39 · Views: 51886 |
| Posted on: Jan 20 2006, 11:57 PM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
Remember - the further out you push the Pluto encounter, the thinner the atmosphere is likely to be.....and the less power you'd have...and the less fuel...thus less opportunity to visit KBO's etc etc Getting there sooner rather than later makes sense in its own right, before you add the bonus of Jupiter science. Doug |
| Forum: New Horizons · Post Preview: #37431 · Replies: 23 · Views: 37644 |
| Posted on: Jan 20 2006, 05:59 PM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
|
| Forum: Tech, General and Imagery · Post Preview: #37368 · Replies: 23 · Views: 27227 |
| Posted on: Jan 20 2006, 03:44 PM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
I'll try and give it a wave when I can http://www.heavens-above.com/orbitdisplay....PST&satid=22076 Doug |
| Forum: Earth Observations · Post Preview: #37345 · Replies: 2 · Views: 6670 |
| Posted on: Jan 20 2006, 03:30 PM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
Pioneer 10 or 11 basically Doug |
| Forum: Private Missions · Post Preview: #37339 · Replies: 237 · Views: 350990 |
| Posted on: Jan 20 2006, 03:26 PM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
http://marswatch.astro.cornell.edu/merweb/..._transit_R8.rml CODE Summary for: bp2666.06a.pancam_phobos_transit_R8.rml: ETH ESF EDN EFF EHG ERS ECS ERP Total ---- ---- ---- ---- ---- ---- ---- ---- ----- 25 25 0 0 0 0 0 0 50 Duration (hhmmss) = 00:13:45 Data Vol (Mbits) = 24.58 That's the sequence the image is from - but it's not presenting itself as a sub-frame, it's a partial downlink of a full frame. Not sure what's going on really. Doug |
| Forum: Opportunity · Post Preview: #37338 · Replies: 88 · Views: 91917 |
| Posted on: Jan 20 2006, 10:36 AM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
OK - who put a piece of hedge out there? http://qt.exploratorium.edu/mars/spirit/pa...OAP2443L7M1.JPG That's a wierd chunk-o-rock - the complex outline would suggest something volcanic to me - but I'm not a geologist Doug |
| Forum: Spirit · Post Preview: #37298 · Replies: 783 · Views: 434417 |
| Posted on: Jan 20 2006, 08:45 AM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
No - he said that they're meeting in 2 weeks to start planning the Jupiter campaign. Doug |
| Forum: New Horizons · Post Preview: #37286 · Replies: 8 · Views: 16834 |
| Posted on: Jan 20 2006, 08:41 AM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
QUOTE (paulanderson @ Jan 20 2006, 02:51 AM) I'm just curious how many UMSF people here are also members of The Planetary Society, besides myself and, obviously, Emily? Me - and I think Nix is as well Doug |
| Forum: New Horizons · Post Preview: #37285 · Replies: 571 · Views: 386067 |
| Posted on: Jan 19 2006, 11:28 PM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
Before lambasting the Discovery Program and JAXA Doug |
| Forum: New Horizons · Post Preview: #37246 · Replies: 8 · Views: 16834 |
| Posted on: Jan 19 2006, 10:20 PM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
QUOTE (ljk4-1 @ Jan 19 2006, 10:12 PM) Does anyone have or know where images of the capsule holding his ashes can be found? Where were they placed on the probe? Did a commemorative plaque or other message accompany them? I'd have thought that would be something of a private matter between Clyde's family and Alan. Doug |
| Forum: New Horizons · Post Preview: #37238 · Replies: 39 · Views: 51886 |
| Posted on: Jan 19 2006, 08:51 PM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
Just a quite post-sep thread to say congratulations to Alan and the team, here's to a clean checkout and small TCM's Doug |
| Forum: New Horizons · Post Preview: #37208 · Replies: 39 · Views: 51886 |
| Posted on: Jan 19 2006, 07:06 PM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
Godspeed little one. We're thinking of you. (told you it'd jump off the pad Doug |
| Forum: New Horizons · Post Preview: #37117 · Replies: 571 · Views: 386067 |
| Posted on: Jan 19 2006, 06:19 PM | |
|
Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
singing - We're on the road again.... Navcam show tiny tiny movement of the IDD in its park position, but not too bad at all. I assume we're in situ for the festoon imaging MI work. Doug |
| Forum: Opportunity · Post Preview: #37052 · Replies: 3597 · Views: 3531676 |
New Replies No New Replies Hot Topic (New) Hot Topic (No New) |
Poll (New) Poll (No New) Locked Topic Moved Topic |
|
Lo-Fi Version | Time is now: 17th December 2024 - 06:53 AM |
|
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. |
|