LAMO, aka Low Altitude Mapping Orbit |
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LAMO, aka Low Altitude Mapping Orbit |
 May 10 2012, 06:31 PM
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#91
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 Senior Member  Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197  |
Can we go now? I want to see Ceres.
-------------------- If Occam had heard my theory, things would be very different now.
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May 10 2012, 06:44 PM
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#92
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Member Group: Members Posts: 540 Joined: 17-November 05 From: Oklahoma Member No.: 557 |
So, I guess I'll go ahead and hang on to my little diogenite samples. A bit more confidence in their source.
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May 10 2012, 06:51 PM
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#93
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 Member Group: Members Posts: 207 Joined: 6-March 07 From: houston, texas Member No.: 1828 |
QUOTE (ElkGroveDan @ May 10 2012, 12:31 PM)  Can we go now? I want to see Ceres. No need to worry! staying longer at Vesta wont change our arrival time at Ceres. p -------------------- Dr. Paul Schenk, Lunar and Planetary Institute, Houston TX
http://stereomoons.blogspot.com; http://www.youtube.com/galsat400; http://www.lpi.usra.edu/science/schenk/ |
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May 10 2012, 06:56 PM
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#94
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 Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
Interesting conference, though I see less than a dozen people in the room (some of them appear annoyed too!)...
-------------------- I always think before posting! - Marco -
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May 10 2012, 07:26 PM
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#95
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Member Group: Members Posts: 207 Joined: 6-March 07 From: houston, texas Member No.: 1828 |
QUOTE (dilo @ May 10 2012, 12:56 PM) Interesting conference, though I see less than a dozen people in the room (some of them appear annoyed too!)... a lot of reporters like to do this sort of thing remotely now. or simply call beofre or after. kinda weird talking to a half empty room sometimes . . . -------------------- Dr. Paul Schenk, Lunar and Planetary Institute, Houston TX
http://stereomoons.blogspot.com; http://www.youtube.com/galsat400; http://www.lpi.usra.edu/science/schenk/ |
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May 11 2012, 07:05 AM
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#96
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 Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
QUOTE (ElkGroveDan @ May 10 2012, 08:31 PM) Can we go now? I want to see Ceres. a quick remark on the conference: I noticed that the speakers pronounced Ceres as something like "series". the correct pronunciation should be something like "Che-reh-ss". it's Latin, it's not American-English! |
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May 11 2012, 12:44 PM
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#97
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 Senior Member Group: Members Posts: 2173 Joined: 28-December 04 From: Florida, USA Member No.: 132 |
It is interesting to know the correct Latin pronunciation but I don't think that makes the American-English pronunciation incorrect.
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May 11 2012, 01:35 PM
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#98
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Senior Member Group: Members Posts: 1074 Joined: 21-September 07 From: Québec, Canada Member No.: 3908 |
FWIW, in French, we write "Cérès" and pronounce it "say-ress" (short "say" and stress on "ress").
Edit: In classical Latin, the letter "C" was pronounced "K", but I don't think anybody would want to pronounce "kay-ress". |
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May 11 2012, 03:40 PM
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#99
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 Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
QUOTE (dilo @ May 10 2012, 11:56 AM) Interesting conference, though I see less than a dozen people in the room (some of them appear annoyed too!)... I've noticed that conferences held at HQ are particularly poorly attended physically, though there are clearly quite a lot of people on the phone. I prefer following briefings on the phone because that way I can study the released images as I listen to the scientists talk about them. I think it's kind of a waste of both money and of busy people's time to fly all those people to HQ for briefings when they could conduct them perfectly well remotely. Though this time I wasn't on the phone at all, as I was playing in the desert with rovers instead 
-------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Jul 24 2012, 01:25 AM
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#100
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Solar System Cartographer Group: Members Posts: 10146 Joined: 5-April 05 From: Canada Member No.: 227 |
Dawn isn't in LAMO now, it's moved back upstairs, but there are still lots of great pics from lower down on the website. Today's image shows a crater with a shadow and detail in the shadow brought out by special processing. Here I have combined the two versions of their image.
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) |
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Jul 25 2012, 02:17 AM
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#101
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Member Group: Members Posts: 207 Joined: 6-March 07 From: houston, texas Member No.: 1828 |
Phil is right,
we are now in HAMO2, looking at the north pole for the first time. we have also been looking at the shadowed areas since last! I hadnt realized we had not shown any of these yet! quite amusing that we can see into the shadows in this way. nice camera. i hope to show some more someday soon. paul -------------------- Dr. Paul Schenk, Lunar and Planetary Institute, Houston TX
http://stereomoons.blogspot.com; http://www.youtube.com/galsat400; http://www.lpi.usra.edu/science/schenk/ |
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Jul 26 2012, 05:57 AM
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#102
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Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
Well, to be precise we aren't in HAMO2 anymore because, starting from yesterday, Dawn ignited engines and started the depart phase from Vesta...!
-------------------- I always think before posting! - Marco -
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Jul 26 2012, 03:41 PM
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#103
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Solar System Cartographer Group: Members Posts: 10146 Joined: 5-April 05 From: Canada Member No.: 227 |
I'm looking forward to seeing some whole-frame images during the departure, a different view than we had during the approach.
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) |
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Jul 26 2012, 08:32 PM
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#104
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Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
Based on simulated viewer and yesterday's Marc report, engines were ON for more than 24 hours and, as showed in the following plots, Dawn orbit is rapidly changing:
Last apoapsis was 776.5 km above Vesta surface, about 63 km above HAMO2 in last days... Total energy is clearly increasing too, however departure phase will last more than a month. Meanwhile, starting from Phil idea, I made these compositions of last 3 posted images in the "revealing shadows" series:
(first one is in Oppia quadrangle and latter two inside Marcia quadrangle). Consider that, for shadowed region, besides the different hue I used negative image in order to have an illumination roughly coherent with illuminated part. -------------------- I always think before posting! - Marco -
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Jul 29 2012, 03:46 PM
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#105
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Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
Further update on escape maneuver:
Dawn is rapidly receding from HAMO orbit thanks to uninterrupted engine thrust; based on simulator figures, during last orbit there was an increase of apoapsis/periapsis heights of 57.9/59.3 km (a rising rate greather than 80 km/day); total energy/mass increased by 2.1 kJ/Kg in 4 days. Added: same processing for the 5th image of "revealing shadows" series, in the Floronia quadrangle:
-------------------- I always think before posting! - Marco -
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