IPB
X   Site Message
(Message will auto close in 2 seconds)

Welcome Guest ( Log In | Register )

462 Pages V  « < 157 158 159 160 161 > » 

djellison
Posted on: Jun 4 2008, 09:49 PM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


"Take a bib and leave your belt at home....."

Good advice most days of the week, where ever you go
  Forum: Chit Chat · Post Preview: #117022 · Replies: 67 · Views: 50219

djellison
Posted on: Jun 4 2008, 09:00 PM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


I can pull myself along easily with one arm.

I can't do pull-ups with one arm though.

Doug
  Forum: Phoenix · Post Preview: #117013 · Replies: 58 · Views: 58356

djellison
Posted on: Jun 4 2008, 06:21 PM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


You may jest - but there was a great 'home movie' style downlink during hatch opening. I could swear I heard someone say 'wow - can you smell it?' when the hatch opened, and literally within 2 minutes of going onboard, they told the ISS crew that the STS toilet was ready for them to use.

Doug
  Forum: Manned Spaceflight · Post Preview: #116975 · Replies: 91 · Views: 94002

djellison
Posted on: Jun 4 2008, 03:25 PM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


One small quagmire does not render all of duck-bay unnavigable. Saying that Cape Verde is an impossible target is unjustified and probably quite wrong. Neither of you were in UMSF during the thrash to Burns Cliff. It took a long time, it meant getting stuck quite a lot - but it was worth it - it was worth every single sol it took to get there ( and it took a lot )

Doug
  Forum: Opportunity · Post Preview: #116938 · Replies: 282 · Views: 211638

djellison
Posted on: Jun 4 2008, 03:03 PM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


A thermal day-night cycle may well help it deploy further as well. But active intervention would be un-necessary

Doug
  Forum: Phoenix · Post Preview: #116936 · Replies: 405 · Views: 222848

djellison
Posted on: Jun 4 2008, 11:42 AM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


It just reminds me more of the Tyrone / Silica Valley / Paso Robles type desposits at Gusev more than the ice we see under the lander. Then gain, the more I look at it, the more it looks like the top of a 'layer' of some sort, which just has to be the ice. We'll know soon enough - that's the fun with exploration

Doug
  Forum: Phoenix · Post Preview: #116918 · Replies: 286 · Views: 198420

djellison
Posted on: Jun 4 2008, 11:31 AM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


Looks like a small dry powdery deposit of some sort to me - ice isn't whiter than white like that.

Doug
  Forum: Phoenix · Post Preview: #116916 · Replies: 286 · Views: 198420

djellison
Posted on: Jun 4 2008, 08:49 AM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


Sat Night it is - just need a sensible eating venue now.
  Forum: Chit Chat · Post Preview: #116909 · Replies: 67 · Views: 50219

djellison
Posted on: Jun 3 2008, 10:49 PM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


QUOTE (dburt @ May 28 2008, 01:38 AM) *
don't wish to restart it now


Not wishing too hard eh? It restarted. Three posts deleted.

Seriously - not again.
  Forum: Opportunity · Post Preview: #116878 · Replies: 258 · Views: 266661

djellison
Posted on: Jun 3 2008, 05:35 PM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


I'd wait - a 16x higher resolution, and colour version, will be following over the next few weeks.

Doug
  Forum: Phoenix · Post Preview: #116850 · Replies: 276 · Views: 187534

djellison
Posted on: Jun 3 2008, 05:13 PM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


QUOTE (Big Joe @ Jun 3 2008, 06:01 PM) *
different angle of camera?


I think so - just a perspective issue. If you rotated them 90 degrees, you could make an anaglyph from them.

Doug
  Forum: Phoenix · Post Preview: #116844 · Replies: 286 · Views: 198420

djellison
Posted on: Jun 3 2008, 03:47 PM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


453 miles, according to google smile.gif
  Forum: Chit Chat · Post Preview: #116831 · Replies: 67 · Views: 50219

djellison
Posted on: Jun 3 2008, 01:58 PM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


QUOTE (Julius @ Jun 3 2008, 02:05 PM) *
it seems to be wet powdery rust!


Given the ambient temperature of between -83 and -28 deg C - 'wet' is somewhat unlikely. The arms actuators are heated, but the scoop itself is not, and whilst some thermal conductivity into the scoop is inevitable, I don't believe, at such cold temperatures, it would be enough to bring the ices over 0 deg C.

Try scooping dry flour or talc or other exceptionally fine grained material and it will also stick to surfaces in a similar way.

As for rust - well - there's a reason Mars is the colour it is - it's rammed full of Iron Oxides smile.gif
  Forum: Phoenix · Post Preview: #116819 · Replies: 286 · Views: 198420

djellison
Posted on: Jun 3 2008, 01:40 PM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


Different camera location, different camera orientation, different illumination.
  Forum: Phoenix · Post Preview: #116816 · Replies: 286 · Views: 198420

djellison
Posted on: Jun 3 2008, 06:55 AM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


QUOTE (Airbag @ Jun 3 2008, 03:30 AM) *
only if we don't talk about space all the time as otherwise our "other halves" will not be too happy...


Asolutely - it's only fair.

Doug
  Forum: Chit Chat · Post Preview: #116792 · Replies: 67 · Views: 50219

djellison
Posted on: Jun 2 2008, 09:22 PM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


TEGA cover rolling open...

http://www.nasa.gov/mission_pages/phoenix/..._11310MBM1.html
http://www.nasa.gov/mission_pages/phoenix/..._11310MBM1.html
http://www.nasa.gov/mission_pages/phoenix/..._11310MBM1.html



  Forum: Phoenix · Post Preview: #116766 · Replies: 4 · Views: 7081

djellison
Posted on: Jun 2 2008, 06:27 PM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


Everything is totally static - I thought about emulating the rest of the landing, but until we see the PHX team releasing an EDL reconstruction, it would be fairly pointless. The elevation is fictional - I made it up - I gave the crater a bit of a rim, some of the hills a bit of elevation - just enough to hint at something. The final frame shows Heimdall.
  Forum: Phoenix · Post Preview: #116753 · Replies: 156 · Views: 135987

djellison
Posted on: Jun 2 2008, 06:14 AM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


I had a go at it myself - the LED's really work at this range - not so great imaging the surface at any sort of distance though.
  Forum: Phoenix · Post Preview: #116680 · Replies: 286 · Views: 198420

djellison
Posted on: Jun 2 2008, 06:10 AM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


The MPF, MER, MPL and Phoenix backshells are about 2.6 metres diameter. The Viking backshells are about 3.5m diameter
  Forum: Past and Future · Post Preview: #116678 · Replies: 132 · Views: 437972

djellison
Posted on: Jun 2 2008, 06:10 AM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


QUOTE (siravan @ Jun 2 2008, 03:51 AM) *
A typical RAD6000 computer used in most of the recent Mars probes is orders of magnitude weaker than needed for this task....


Use a RAD750 then. Very nearly 10x the processing power of a RAD6000. For the sort of number crunching involved or this - you would have a FPGA on the instrument itself anyway. Think of the FPGAs on HiRISE processing 28.6 megapixels per ccd per second. I'm sure if the need was there, it could be done with no problems at all.
  Forum: Past and Future · Post Preview: #116677 · Replies: 64 · Views: 67631

djellison
Posted on: Jun 1 2008, 10:14 PM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


They don't have to deal with it - they have calibrated data. The raw JPG's are just processed to be 'sensible to look at' not calibrated.

Doug
  Forum: Phoenix · Post Preview: #116645 · Replies: 286 · Views: 198420

djellison
Posted on: Jun 1 2008, 06:24 PM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


All looks totally natural to me.
  Forum: Past and Future · Post Preview: #116633 · Replies: 132 · Views: 437972

djellison
Posted on: Jun 1 2008, 04:57 PM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


Updated - more of a dolly-in-THEN-zoom-out - still at http://www.dougellison.com/?p=19 If we had an unquestionable heatshield location, I'd put it in. Someone was asking about shadow. The shadow would be way way off the bottom of this image, and way to the right as well.

Doug
  Forum: Phoenix · Post Preview: #116626 · Replies: 156 · Views: 135987

djellison
Posted on: Jun 1 2008, 02:45 PM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


The 'zoom out- zoom in' is actually the camera going from a 1deg fov to a 45 deg fov, whilst zooming in from 700km to <1km - it is a bit jarring, but it'll do smile.gif

Doug
  Forum: Phoenix · Post Preview: #116606 · Replies: 156 · Views: 135987

djellison
Posted on: Jun 1 2008, 12:59 PM


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1


Simulation movie - http://www.dougellison.com/?p=19 - not 100%, but I think it'll help put it into context smile.gif
  Forum: Phoenix · Post Preview: #116596 · Replies: 156 · Views: 135987

462 Pages V  « < 157 158 159 160 161 > » 

New Posts  New Replies
No New Posts  No New Replies
Hot topic  Hot Topic (New)
No new  Hot Topic (No New)
Poll  Poll (New)
No new votes  Poll (No New)
Closed  Locked Topic
Moved  Moved Topic
 

RSS Lo-Fi Version Time is now: 17th December 2024 - 07:13 AM
RULES AND GUIDELINES
Please read the Forum Rules and Guidelines before posting.

IMAGE COPYRIGHT
Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and 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.