Juno - Jupiter Orbiter |
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Juno - Jupiter Orbiter |
 Aug 6 2011, 03:07 PM
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#316
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 Senior Member  Group: Moderator Posts: 6474 Joined: 8-December 05 From: Los Angeles Member No.: 602  |
Glad you were there to represent UMSF, Fearless Leader!
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Aug 7 2011, 01:50 PM
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#317
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 Member Group: Members Posts: 321 Joined: 6-April 06 From: Cape Canaveral Member No.: 734 |
I forgot I was a member of this forum and could have provided some unique insight for those here. I was "in residence" with the Juno spacecraft team since they arrived in Florida and gave the call that the spacecraft was on internal power.
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Aug 7 2011, 04:22 PM
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#318
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Senior Member Group: Moderator Posts: 6474 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
NICE shots, Jim!!!
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Aug 12 2011, 05:06 PM
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#319
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 Senior Member Group: Members Posts: 1146 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
it's been one week since launch. any update?
-------------------- I'm one of the most durable and fervent advocates of space exploration, but my take is that we could do it robotically at far less cost and far greater quantity and quality of results.
James Van Allen |
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Aug 16 2011, 05:13 PM
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#320
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Senior Member Group: Members Posts: 1146 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
a status update at last!
the first trajectory correction has been canceled. too bad the unused fuel will be wasted, there being no mission extension planned... an asteroid flyby maybe? -------------------- I'm one of the most durable and fervent advocates of space exploration, but my take is that we could do it robotically at far less cost and far greater quantity and quality of results.
James Van Allen |
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Aug 16 2011, 05:58 PM
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#321
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 Member Group: Members Posts: 618 Joined: 13-February 10 From: Vancouver, British Columbia Member No.: 5221 |
They haven't mentioned any; Juno will be in the main belt two separate times during the cruise, but with the camera's wide FOV we'd need serious luck for anything more than a few pixels.
-------------------- To a body of infinite size there can be ascribed neither centre nor boundary... Thus the Earth no more than any other world is at the centre. -Giordano Bruno, 1584.
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Aug 16 2011, 06:21 PM
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#322
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Senior Member Group: Members Posts: 1146 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
but now they could target it with some of the fuel spared...
-------------------- I'm one of the most durable and fervent advocates of space exploration, but my take is that we could do it robotically at far less cost and far greater quantity and quality of results.
James Van Allen |
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Aug 31 2011, 05:13 AM
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#323
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Senior Member Group: Members Posts: 1146 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
-------------------- I'm one of the most durable and fervent advocates of space exploration, but my take is that we could do it robotically at far less cost and far greater quantity and quality of results.
James Van Allen |
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Aug 31 2011, 05:12 PM
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#324
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 Member Group: Members Posts: 508 Joined: 10-October 06 From: Maynard Mass USA Member No.: 1241 |
this is a little zoom of Juno's Earth/Moon picture
I think I see my
-------------------- CLA CLL
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Sep 1 2011, 06:15 AM
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#325
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Senior Member Group: Members Posts: 1041 Joined: 13-September 05 Member No.: 497 |
In case anyone wants to play with the original data, here's a subsection of the first Earth/Moon image from Junocam in completely raw form. If you stretch it you can see some transform artifacts from the lossy compression we applied onboard. You may also see a little stray light from the sun on the right side of the image. Earth appears three times, once in the red, green, and blue bands (top to bottom). Earth is a bit saturated in the red and green bands; the exposure time was 3.2 msec, no TDI, and this is square-root companded.
If anyone can do a better job than the color composite we did, I'd be curious to see it. Because of the saturation, I think colorizing the blue channel would work better than a true composite, which tends to be a bit blurry.
Attached File(s)
-------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Sep 1 2011, 06:42 AM
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#326
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Member Group: Members Posts: 107 Joined: 2-March 06 Member No.: 692 |
Thanks for the raw image. It shows just how little data their really was in that picture. The moon is only about one pixel wide in each color it seems to my untrained eye. You can just make out shape and general color when combining them. This is the kind of thing I come here for!
And a picture is better than no picture to me. It brings me there. |
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Sep 2 2011, 05:10 AM
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#327
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Member Group: Members Posts: 508 Joined: 10-October 06 From: Maynard Mass USA Member No.: 1241 |
hello mcaplinger,
Thank you (MSSS?) for the raw data. More later... -------------------- CLA CLL
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Sep 2 2011, 02:44 PM
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#328
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 IMG to PNG GOD Group: Moderator Posts: 1314 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
Thanks for the raw image.
There are some dark (but not completely black) pixels around the Earth and Moon that are apparently compression artifacts (might also be scattered light but I doubt it because they seem to form a 'square'). A stretched version of blue image:  Apart from this the entire image is completely black (the intensity is exactly 0), there is no stray light on the right side of the image. I assume that this must be because this is a subsection of the original image. |
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Sep 2 2011, 06:44 PM
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#329
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Senior Member Group: Members Posts: 1041 Joined: 13-September 05 Member No.: 497 |
QUOTE (Bjorn Jonsson @ Sep 2 2011, 07:44 AM)  Apart from this the entire image is completely black (the intensity is exactly 0), there is no stray light on the right side of the image. I assume that this must be because this is a subsection of the original image. Right. That's why I said "may" instead of "will". -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Sep 2 2011, 08:15 PM
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#330
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Member Group: Members Posts: 114 Joined: 27-September 10 Member No.: 5458 |
Here is my take on the image. The red and green levels were over powering the blue, so I pushed the blue and lowered the input of the red and green, combined them all, compressed the histogram by a factor of 33 and then lowered the gamma a little. The moon has been artificially pushed as well of course.
-minor change to image: dropped gamma a slight bit for better visual (monitor settings mishap). |
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