Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: RobertM on Jun 24, 2014, 20:11:50

Title: Crescent Nebula and 'Soap bubble'
Post by: RobertM on Jun 24, 2014, 20:11:50
It's been a long road (you wouldn't believe just how long) getting an image out of this scope but finally it's starting to produce results.  It's still not perfect since the scope was sliding off the tube rings (see Caroles post earlier today) ever so slowly, leaving stars elongated.

(https://farm6.staticflickr.com/5570/14312601459_a3929f8606_c.jpg)

The Crescent Nebula NGC6888 framed for the 'Soap bubble' planetary nebula near the bottom right middle.

68 x 5 min Astrodon 5nm Ha
Rough process in Maximdl (DDP but no calibration frames or NR)
RH200 (600mm f/3)
Starlight-Xpress SXVR-H694

Slightly larger: https://farm6.staticflickr.com/5570/14312601459_3c5aa1eec0_h.jpg (https://farm6.staticflickr.com/5570/14312601459_3c5aa1eec0_h.jpg)

Full size: https://farm6.staticflickr.com/5570/14312601459_814d92719d_o.jpg (https://farm6.staticflickr.com/5570/14312601459_814d92719d_o.jpg)

TFL
Robert
Title: Re: Crescent Nebula and 'Soap bubble'
Post by: Mac on Jun 24, 2014, 20:15:44
Thats looking pretty good,

I'd be chuffed to bits with that one.

Mac.
Title: Re: Crescent Nebula and 'Soap bubble'
Post by: The Thing on Jun 24, 2014, 20:21:49
If that's not quite right then I'd be really blown away but the 'right' version! Really super details and range of tone. And mono, saves all that colour balancing lark :)
Title: Re: Crescent Nebula and 'Soap bubble'
Post by: MarkS on Jun 24, 2014, 20:35:17
That's a really good result!  A fantastic Crescent and lots of faint detail in the background.  I love the Soap Bubble as well.  That f/3 scope certainly catches those photons!  You have to look really hard to see the elongation you refer to.

Mark
Title: Re: Crescent Nebula and 'Soap bubble'
Post by: RobertM on Jun 25, 2014, 10:58:10
Thanks very much.  I wasn't expecting the frames to stack like they did but MaximDL seems to excel in these circumstances.  For now I've gone back to the original scope fitting to see what that's like now the Feathertouch is fitted and if that works then I'll go with that.

What I really want now is a dark site :)

Robert

Title: Re: Crescent Nebula and 'Soap bubble'
Post by: Fay on Jun 25, 2014, 19:25:28
Very nice Robert, good to get the Bubble! i plan to look in earnest at the forecasts next week & will try to get back in the swing
Title: Re: Crescent Nebula and 'Soap bubble'
Post by: JohnP on Jun 26, 2014, 08:12:49
Wow Robert - very nice. And like you say its been a while - I didn't even know you had this scope - when did you get this? All I can say is top notch photo from a top notch scope/ camera - the bubble is very prominent & loving all the dust clouds - this is my kind of image - just a shame I cant get results like this myself..

waiting for more images now - John
Title: Re: Crescent Nebula and 'Soap bubble'
Post by: Carole on Jun 26, 2014, 09:27:54
A very classy image Robert. Nice to see you imaging again.

Carole
Title: Re: Crescent Nebula and 'Soap bubble'
Post by: julian on Jun 26, 2014, 11:10:31
Very nice image Robert.
Title: Re: Crescent Nebula and 'Soap bubble'
Post by: RobertM on Jun 27, 2014, 13:51:12
Quote from: JohnP on Jun 26, 2014, 08:12:49
Wow Robert - very nice. And like you say its been a while - I didn't even know you had this scope - when did you get this? All I can say is top notch photo from a top notch scope/ camera - the bubble is very prominent & loving all the dust clouds - this is my kind of image - just a shame I cant get results like this myself..

waiting for more images now - John

Thanks John.

I've had it or rather this is the second for about a year (don't ask !).  I still have an issue with orthagonality of the camera at the lower part of the frame but I'm going to have another go at sorting that out this w/e.  Upgrading the (sub) standard focuser for an autofocused Feathertouch has made focusing a breeze; before it was a bit hit and miss which doesn't take any prisoners at this focal ratio.

Robert
Title: Re: Crescent Nebula and 'Soap bubble'
Post by: Rocket Pooch on Jul 02, 2014, 22:38:54
Hang on where and when did the RH200 come into play.

Not a bad image either.
Title: Re: Crescent Nebula and 'Soap bubble'
Post by: Mike on Jul 02, 2014, 22:53:05
What do you need an RH200 for ?

(http://www.lkw-stefan.de/galerie/einsatzbilder_o%2Bk/3/RH200-1.jpg)
Title: Re: Crescent Nebula and 'Soap bubble'
Post by: JohnP on Jul 03, 2014, 11:57:12
 :P :P :P
Title: Re: Crescent Nebula and 'Soap bubble'
Post by: RobertM on Jul 03, 2014, 22:05:48
Because I've always had trouble finding a parking space in Bromley :twisted:
Title: Re: Crescent Nebula and 'Soap bubble'
Post by: Rocket Pooch on Jul 23, 2014, 16:47:09
Small point, but do people know how difficult it is getting the bubble, esspecially with blue.