I have seen another description of the image say it is actually about 30 degrees across:
http://map.gsfc.nasa.gov/ContentMedia/990047b.jpg
Dunno which is correct.
Search found 7338 matches
- Wed Oct 10, 2007 5:37 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: 2 Million Galaxies; % of sky? (APOD 07 Oct 2007)
- Replies: 11
- Views: 3732
- Wed Oct 10, 2007 1:29 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Iapetus, WHITE on BLACK (APOD 19 Sep 2007)
- Replies: 39
- Views: 13897
Maybe if there is some odd heat source hitting the moon in that direction or emanating from the ridge? I think they probably did some thermal imaging on it and any odd heat sources would have been detected though. IIRC, the dark areas were just all slightly warmer than the white areas with some slig...
- Wed Oct 10, 2007 4:06 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Iapetus, WHITE on BLACK (APOD 19 Sep 2007)
- Replies: 39
- Views: 13897
- Tue Oct 09, 2007 9:54 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Iapetus, WHITE on BLACK (APOD 19 Sep 2007)
- Replies: 39
- Views: 13897
- Tue Oct 09, 2007 9:45 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Iapetus, WHITE on BLACK (APOD 19 Sep 2007)
- Replies: 39
- Views: 13897
- Tue Oct 09, 2007 8:47 pm
- Forum: Starship Asterisk: Handbook
- Topic: New! APOD software
- Replies: 125
- Views: 271467
- Tue Oct 09, 2007 7:59 pm
- Forum: Starship Asterisk: Handbook
- Topic: New! APOD software
- Replies: 125
- Views: 271467
- Tue Oct 09, 2007 7:52 pm
- Forum: Starship Asterisk: Handbook
- Topic: New! APOD software
- Replies: 125
- Views: 271467
- Tue Oct 09, 2007 5:03 pm
- Forum: The Observation Deck: Latest Sky Photography
- Topic: Phobos Then and Now
- Replies: 11
- Views: 5902
- Tue Oct 09, 2007 2:32 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Bang or No Bang
- Replies: 284
- Views: 29727
- Mon Oct 08, 2007 8:07 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: NGC 474 artifact? (APOD 08 Oct 2007)
- Replies: 12
- Views: 4349
- Mon Oct 08, 2007 7:58 pm
- Forum: Starship Asterisk: Handbook
- Topic: New! APOD software
- Replies: 125
- Views: 271467
- Mon Oct 08, 2007 5:51 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: 2 Million Galaxies; % of sky? (APOD 07 Oct 2007)
- Replies: 11
- Views: 3732
That's the thing, I'm not exactly sure, since I haven't ever seen for sure non-lossy images to compare. What they look like are interpolated jpegs to me, but I can't be certain. I decided to make a simulated image, just to try to illustrate my point, which is that any artifacts can distort small spe...
- Mon Oct 08, 2007 2:08 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Saguaro Moon (APOD 26 Sep 2007)
- Replies: 21
- Views: 8080
I contacted Stefan and this is what he had to say about it. :) I don't think I have to play a defendant role. But please allow me some annotations: 1. The red/orange/yellow color of a Sunset is *NOT* caused by the Sun, but by the atmosphere. The same colors happens with the Moon. However, the Moon i...
- Mon Oct 08, 2007 12:32 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: 2 Million Galaxies; % of sky? (APOD 07 Oct 2007)
- Replies: 11
- Views: 3732
This is a little off topic, but I'm curious to see if you know anything about this, Chris. http://galaxyzoo.org/ There is a huge image they seem to use with lots of galaxies on it but it seems as though the image has multiple levels of jpeg artifacts on it. Instead of having the huge source image as...
- Mon Oct 08, 2007 12:18 pm
- Forum: Starship Asterisk: Handbook
- Topic: New! APOD software
- Replies: 125
- Views: 271467
- Sat Oct 06, 2007 11:16 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Multiple planes of space
- Replies: 12
- Views: 3432
Vision, I don't think we've had telescopes that are capable of letting us view other galaxies for long enough to observe it. Even if we had telescopes 10,000 years ago, cameras didn't get invented until just a few hundred years ago, and photographic cameras only started to come around a little over ...
- Thu Oct 04, 2007 1:35 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: HOLE IN MARS REVISITED
- Replies: 33
- Views: 8553
- Thu Oct 04, 2007 2:41 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Another cosmic zoom video
- Replies: 32
- Views: 10313
- Wed Oct 03, 2007 1:05 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Another cosmic zoom video
- Replies: 32
- Views: 10313
- Wed Oct 03, 2007 1:03 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Cassini imags of Lapetus.
- Replies: 16
- Views: 4668
- Wed Oct 03, 2007 12:10 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Another cosmic zoom video
- Replies: 32
- Views: 10313
- Tue Oct 02, 2007 1:26 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Another cosmic zoom video
- Replies: 32
- Views: 10313
Hah, yeah, it's either say nothing, say something off topic, or dispute its accuracy or promote some form of conspiracy theory. I was going to say the music in the first one was cheesier than a cheeseball dipped in cheez whiz and subsequently coated in tiny cheeseballs but decided it would be asinin...
- Tue Oct 02, 2007 10:49 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Another cosmic zoom video
- Replies: 32
- Views: 10313
- Tue Oct 02, 2007 10:37 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Saguaro Moon (APOD 26 Sep 2007)
- Replies: 21
- Views: 8080
I imagine that it is orange for the same reason the sun turns orange when its light shines through the atmosphere near the horizon. I think the sky in that photo is orange from the setting sun in the western sky, which means that the sun is in front of the camera, so what's shinning on the moon to ...