Ann,
My last word on the subject (for now, anyway) is to note the truly unusual and intriguing pale magenta or lavender color across NGC 7008. I hope we provoke a response here from an astrochemist. See http://tinyurl.com/2elr8pr
Bob
Search found 34 matches
- Mon Jan 17, 2011 4:47 am
- Forum: The Observation Deck: Latest Sky Photography
- Topic: General discussions split from Recent Submissions
- Replies: 13
- Views: 1139
- Sun Jan 16, 2011 7:32 pm
- Forum: The Observation Deck: Latest Sky Photography
- Topic: General discussions split from Recent Submissions
- Replies: 13
- Views: 1139
Re: General image discussion split from Recent Submissions
Ann, Thank you! That's a most interesting perspective, and one I sympathize with, as you are, in effect, seeking "truth in imaging." (Which is why I personally am uncomfortable with HST and other artificial narrow-band palettes, even though they do indicate differentiation in gaseous compo...
- Sun Jan 16, 2011 4:09 pm
- Forum: The Observation Deck: Latest Sky Photography
- Topic: General discussions split from Recent Submissions
- Replies: 13
- Views: 1139
General discussions split from Recent Submissions
Ann, You frequently express your distaste for planetaries (but sometimes make an exception.) Given that planetaries are among the most vivid and diversely colored objects the in sky, and are among the youngest and most dramatic in their origin, what underlies your disdain for images of them? Kind Re...
- Mon Nov 22, 2010 6:21 pm
- Forum: Starship Asterisk: Handbook
- Topic: Why isn't the Asterisk more popular?
- Replies: 60
- Views: 9637
Re: Why isn't the Asterisk more popular?
To be clearer, some of the most interesting people I know qualify as informed crazies. But maybe that's a function of my journalism background.
Bob
Bob
- Mon Nov 22, 2010 5:36 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: A Dark Dune Field in Proctor Crater (2010 Nov 22)
- Replies: 32
- Views: 15457
Re: APOD: A Dark Dune Field in Proctor Crater (2010 Nov 22)
Ah, I hadn't realized we are looking at sand-ripple scale. But still, we appear to have very dark sand on top of light (rippled) sand. Is there a material difference, and if so, what process keeps the light and dark materials separate?
Bob
Bob
- Mon Nov 22, 2010 4:37 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: A Dark Dune Field in Proctor Crater (2010 Nov 22)
- Replies: 32
- Views: 15457
Re: APOD: A Dark Dune Field in Proctor Crater (2010 Nov 22)
The large, dark "bacterial" dunes appear to be superimposed on a complex field of much smaller dunes, formed in turn on some nastily complex system of bedrock ridges. Any information as to the difference in material composition between the big dunes and the surrounding dune-like terrain? O...
- Mon Nov 22, 2010 4:27 pm
- Forum: Starship Asterisk: Handbook
- Topic: Why isn't the Asterisk more popular?
- Replies: 60
- Views: 9637
Re: Why isn't the Asterisk more popular?
Starship Asterisk looks fairly popular to me, but here are a couple thoughts on why it's not even more popular. One is the "Discuss" header on APOD. That implies discussion only of APODs, a very limited prospect. I signed up a couple years ago to discuss a particular APOD, and failed to no...
- Sat Nov 20, 2010 9:42 pm
- Forum: The Observation Deck: Latest Sky Photography
- Topic: Recent Submissions: 2010 November 19-22
- Replies: 31
- Views: 5127
- Sun Apr 06, 2008 1:29 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Horsehead history, fusion, orientation, repeat (06 Apr 2008)
- Replies: 19
- Views: 7481
Why repeat APODs?
I fully agree with Dietmar. What's the point of repeating an APOD, especialy of a familiar object, when there's so much else to be seen, and such a variety of great new images to draw on?
"Teaching by repetition" is no excuse. If you want repetition, go to the archive.
Bob
"Teaching by repetition" is no excuse. If you want repetition, go to the archive.
Bob