Click here if you are having trouble logging into the forums
Privacy Policy |
Please read our Terms
of Service | Signup and
Troubleshooting FAQ | Problems? PM a Red or a Green Gu… uh, User
Mike7Mak
Pooh-Bah
Reged: 12/07/11
Loc: New York
|
Arp 6 Bear Paw galaxy
#5587493 - 12/24/12 04:37 PM
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
This was about as far from the Moon as I could get and still have 4 hours or so to gather data. There was a large variation in background brightness as the Moon sank in the West. Mean ADU values started out around 2400 and ended at 1200.
The Bear Paw (NGC 2537) is 26 million lightyears away and the little spiral to the left is about 500 mly farther out. (Info stolen from RickJ's post of the same object in '08. Thanks Rick.)
|
rigel123
Postmaster
Reged: 06/29/09
Loc: SW Ohio
|
Re: Arp 6 Bear Paw galaxy
[Re: Mike7Mak]
#5587521 - 12/24/12 05:01 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
That is cool Mike! I have not heard of that one!
|
Mike7Mak
Pooh-Bah
Reged: 12/07/11
Loc: New York
|
Re: Arp 6 Bear Paw galaxy
[Re: rigel123]
#5587632 - 12/24/12 07:02 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
Thanks Warren, I have a fascination with the ARPs. Most are small and challenging to image and lot's of them are interacting pairs.
I even bought the book. 
http://www.willbell.com/handbook/arp.htm
|
Scott in NC
Mad Hatter
Reged: 03/05/05
Loc: NC
|
Re: Arp 6 Bear Paw galaxy
[Re: rigel123]
#5587693 - 12/24/12 07:54 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
Quote:
That is cool Mike! I have not heard of that one!
Same here--I learned something new tonight! Thanks for sharing that image, Mike. 
|
Raginar
Carpal Tunnel
Reged: 10/19/10
Loc: Rapid CIty, SD
|
Re: Arp 6 Bear Paw galaxy
[Re: Scott in NC]
#5588583 - 12/25/12 02:42 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
Reminds me of the Owl Nebula. beautiful image!
|
Mike7Mak
Pooh-Bah
Reged: 12/07/11
Loc: New York
|
Re: Arp 6 Bear Paw galaxy
[Re: Raginar]
#5588840 - 12/25/12 08:06 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
Thanks Chris, I'm pretty happy with this one. Kept the stars under control and went easy on the processing. Just some deconvolution on the two galaxies, 'tracked' noise reduction and 70 percent bin to reduce noise even more.
Does look more like a nebula than a galaxy. Some theories are it's two or more dwarf galaxies in the process of merging.
|
CounterWeight
Postmaster
Reged: 10/05/08
Loc: Cloudyopolis, OR.
|
Re: Arp 6 Bear Paw galaxy
[Re: Mike7Mak]
#5592715 - 12/28/12 01:41 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
Love the image Mike!
How do you like that book? Was looking at it yesterday on a visit to Powells - they have a HUGE selection of astro books and I had terrible difficulty making up my mind... couldn't so I left to think for a few days. Other candidate was a book on optics.
BTW - if anyone interested I have a link one of H. Arp's papers
|
Mike7Mak
Pooh-Bah
Reged: 12/07/11
Loc: New York
|
Re: Arp 6 Bear Paw galaxy
[Re: CounterWeight]
#5592910 - 12/28/12 04:05 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
Hi Jim, if you are interested in the ARPs, and H. Arp himself, it's 'the' book. Lots of history, locator charts, and inverted images. I keep it in the obs to preview the ones I want to shoot (no internet out there). It's a big 'coffee table' book though, so probably not the best for taking outside. The cover shot is the only color picture.
|
|
8 registered and 10 anonymous users are browsing this forum.
Moderator: Undermidnight, fishonkevin
Print Thread
|
Forum Permissions
You cannot start new topics
You cannot reply to topics
HTML is disabled
UBBCode is enabled
|
Thread views: 452
|
|
|
|
|
|
|
Previous
Index
Next
Threaded
