Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: RobertM on Sep 16, 2009, 20:48:21

Title: Cocoon Ha
Post by: RobertM on Sep 16, 2009, 20:48:21
This is something from a few weeks ago, usual culprits:

10 x 20m + 2 x 30m Astronomik 13nm Ha filter over 2 nights.  Visibility was about Mag 2.5-3 so fairly rubbish.

Was waiting to do the other two channels but life has conspired against that so this is a quick process of that data.

Robert

(http://farm4.static.flickr.com/3527/3889752379_8c53d6dc6a_o.jpg)
Title: Re: Cocoon Ha
Post by: MarkS on Sep 16, 2009, 21:43:31

That's looking very good to me Robert.  It's one of my favourite objects.

I love those corner to corner pin-sharp stars!!

Mark
Title: Re: Cocoon Ha
Post by: Whitters on Sep 16, 2009, 21:50:19
Looks really nice using that field of view, ethereal object in a swarm of stars.
Title: Re: Cocoon Ha
Post by: Mac on Sep 16, 2009, 23:50:10
wow, and thats from mag 2.5 - 3 skies

very nice.

Mac
Title: Re: Cocoon Ha
Post by: RobertM on Sep 17, 2009, 10:38:07
Thanks guys.  I found this a really difficult object from around here the background sky noise is too high and really should have left it for a dark site.  Would like to do the RGB from Woodlands but I'm not sure I'll be able to get down there this w/e after all :(  I feel the 13nm filters are too wide and letting too much LP in so I've ordered the narrower Baaders.

PS. Mark, didn't you mean Tak sharp ;)
Title: Re: Cocoon Ha
Post by: JohnP on Sep 17, 2009, 11:35:53
looks nice Robert - You have clipped the blacks - If you make background a bit brighter there is lots more neb showing through etc. But I'm sure you know that anyway... oh for 30mn subs.... :-)

Nice one & love the FOV - John
Title: Re: Cocoon Ha
Post by: Fay on Sep 17, 2009, 16:03:25
Very nice Robert, you always deliver a nice image....30 mins subs....SIGH...........
Title: Re: Cocoon Ha
Post by: Daniel on Sep 21, 2009, 14:57:09
30 min subs???!!! that's crazy, but well worth it, never managed to get a pleasing image of this one myself, always came out as a faint blob!

I agree with John though the blacks are a little clipped

Daniel
:O)