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Phoenix - spring images, HiRISE views of Phoenix after the long, long winter
vikingmars
post Nov 14 2009, 02:58 PM
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QUOTE (djellison @ Nov 14 2009, 03:52 PM) *
Super resolution isn't really going to work with two push broom images. You're likely introducing more artefacts than improvements. It looks less sharp and phoenix less obvious than the orig two images I'm afraid. So drawing any conclusion from it is unwise


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kimmie
post Nov 23 2009, 09:24 AM
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Not the original poster but thanks for the tip djellison. I was looking for more information on this.



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Hungry4info
post Dec 14 2009, 03:40 AM
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Quick question.

While I don't expect contact with Phoenix to be re-established, I'm curious as to how that would happen if it does. Is DSN time being used to ping Phoenix? Or will Phoenix just ping Earth whenever it wakes up? (If able to)


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mcaplinger
post Dec 14 2009, 06:04 AM
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QUOTE (Hungry4info @ Dec 13 2009, 07:40 PM) *
Is DSN time being used to ping Phoenix?

Phoenix has no direct-to-Earth link, so I presume that any listening to be done will have to be done by either Odyssey or MRO.


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nprev
post Dec 14 2009, 06:13 AM
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Hopefully not too far OT, but is that UHF protocol ("Electra"?) for Mars orbiter/lander comm going to be stable for the foreseeable future?

Sort of an interesting system engineering problem to make sure that future missions will be able to talk to long-lived legacy ground assets, yet still incorporate advancements/enhancements.


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mcaplinger
post Dec 14 2009, 07:01 AM
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QUOTE (nprev @ Dec 13 2009, 10:13 PM) *
Hopefully not too far OT, but is that UHF protocol ("Electra"?) for Mars orbiter/lander comm going to be stable for the foreseeable future?

http://en.wikipedia.org/wiki/Proximity-1_Space_Link_Protocol

It's about as stable as TCP/IP.


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Hungry4info
post Dec 14 2009, 01:42 PM
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QUOTE (mcaplinger @ Dec 14 2009, 12:04 AM) *
Phoenix has no direct-to-Earth link, so I presume that any listening to be done will have to be done by either Odyssey or MRO.

This makes sense. So, might Phoenix ping MOD or MRO? Or are either of the two instructed periodically to ping Phoenix?
Basically, we're all waiting. But is our wait passive or active?


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djellison
post Dec 14 2009, 02:05 PM
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Active in either case - they will have to tell MRO / MODY to listen. In Lazerus mode I THINK PHX is sat there waiting for a Proximity 1 Hail. Not sure though.
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mcaplinger
post Dec 14 2009, 02:26 PM
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Per Mark Lemmon, http://www.met.tamu.edu/mars/lazarus.html

"So, Phoenix woke up and checked: safe mode, yes; low power, yes; clock reset to pre-launch, yes; landing sensor deployed, yes. Action: try to wake up on solar power only, at whatever time of sol that solar power was sufficient. When awake, listen for a beacon on the orbiters for 2 hours. Then, sleep for 19 hours, and try again."

So yes, checking on PHX will require active commanding of an orbiter.


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Hungry4info
post Dec 14 2009, 05:09 PM
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Alright, thanks.
Is either orbiter being used at the moment for this? If not, when are there plans to try?


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mcaplinger
post Dec 14 2009, 05:29 PM
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QUOTE (Hungry4info @ Dec 14 2009, 09:09 AM) *
Is either orbiter being used at the moment for this? If not, when are there plans to try?

The link referenced in post 34 of this thread says they will try "early next year". I thought I heard January at one point, can't find that link now.


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elakdawalla
post Dec 14 2009, 05:32 PM
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January is what Veronica McGregor told me.


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elakdawalla
post Jan 11 2010, 11:49 PM
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NASA to Check for Unlikely Winter Survival of Mars Lander
"Beginning Jan. 18, NASA's Mars Odyssey orbiter will listen for possible, though improbable, radio transmissions from the Phoenix Mars Lander..."

The release includes a new HiRISE image showing Phoenix hardware with lots of frost, dated January 6. I am having a devil of a time matching up the new image to the previous ones (PSD attached of the four previous ones I stacked to make an animation). The image's page on the HiRISE website does not yet contain any information -- guess they needed to wait till the press release got out. Help! I want to post about this fast but I would really really really like to be able to post a comparison animation flickering among the past views of the lander.

EDIT: Crud, PSD attachment didn't work. GIF attached instead.
Attached thumbnail(s)
Attached Image
 


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elakdawalla
post Jan 12 2010, 12:27 AM
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Aha, I see what my problem was. I was trying to match the current backshell to the past position of the lander. The image was upside down. rolleyes.gif

New animation is here.


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Hungry4info
post Jan 12 2010, 01:21 AM
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Well at least one solar panel is still attached. The other looks like it's a different colour. Hopefully not a bad sign. But I'm not sure how to interpret the image.


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