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Old 23-10-2016, 07:47 PM
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Atmos (Colin)
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Large Magellanic Cloud

Last night for the first time since buying my Nikkor 85mm F/1.8G months ago I had it under the stars. I have done a fair bit of testing with street lights and the like seeing what the coma is like at various F/Stops, it works remarkably well!

Taken with my Nikon D700 + Nikkor 85mm F/1.8G @ F/1.8 with 60s exposures. There is a slight mismatch along the RHS of the image that I decided not to crop because it does contain a fair bit of ISM. In fact, it is showing up reasonably well on the whole lower RHS of the image. I was pleasantly surprised to see it after I ran the DBE.

Took 35 minutes to Linear Clip stack all 122 exposures, longer than I expected! Might try a Windsorised Sigma Clip to see how that deals with the data yet. All in all, quite pleased. I thought that I'd missed the focus but I am getting a FWHM of 2.8 pixels which is about the best I've ever achieved with this camera, thought the F/1.8 imaging would have been more painful than it was.

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Old 23-10-2016, 08:01 PM
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Nice one, Colin!
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Old 23-10-2016, 08:18 PM
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Very nice!
Cheers,
Tim
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Old 23-10-2016, 08:50 PM
oernulfs (Ørnulf)
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Nice work! I envy you observeres that far south, with all those exiting deep sky objects to "play" with. Thanks for sharing.
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Old 23-10-2016, 09:01 PM
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Atmos (Colin)
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Nice one, Colin!
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Originally Posted by topheart View Post
Very nice!
Cheers,
Tim
Thanks Some star halo reduction has left hard edges, was only a relatively quick process.

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Originally Posted by oernulfs View Post
Nice work! I envy you observeres that far south, with all those exiting deep sky objects to "play" with. Thanks for sharing.
Us southerns do have some great objects, neither of the Magellanic Clouds set from my location although they do get close.
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Old 23-10-2016, 09:21 PM
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pmrid (Peter)
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Colin, that's a terrific image. The image scale helps me a lot in visualising this galaxy. It seems to hint at the inner bar of a barred spiral ( to my eyes at least) in a way that other images do not.
Peter
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Old 23-10-2016, 11:34 PM
Placidus (Mike and Trish)
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Bravo !!
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Old 24-10-2016, 09:45 AM
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That's a beauty Colin. Nice detail and some of the background dust is starting to show. Good one. I took what I thought was quite a few subs last night doing something similar but I must have set something wrong as it took 30 sec subs instead of 10minute subs!

Greg.
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Old 24-10-2016, 09:51 AM
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That's a beautiful photo Colin.
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Old 24-10-2016, 12:03 PM
Stevec35 (Steve)
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A nice LMC Colin!

Cheers

Steve
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  #11  
Old 24-10-2016, 04:45 PM
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Atmos (Colin)
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Quote:
Originally Posted by pmrid View Post
Colin, that's a terrific image. The image scale helps me a lot in visualising this galaxy. It seems to hint at the inner bar of a barred spiral ( to my eyes at least) in a way that other images do not.
Peter
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Bravo !!
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Originally Posted by Regulus View Post
That's a beautiful photo Colin.
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Originally Posted by Stevec35 View Post
A nice LMC Colin!

Cheers

Steve
I was spurred on by an amazing image earlier this year with wider FOV (50mm?) that showed both LMC and SMC in the same field. That shot blew my mind a little

Quote:
Originally Posted by gregbradley View Post
That's a beauty Colin. Nice detail and some of the background dust is starting to show. Good one. I took what I thought was quite a few subs last night doing something similar but I must have set something wrong as it took 30 sec subs instead of 10minute subs!

Greg.
Ouch! Look forward to see what the XT2 is capable of! Given that it has considerably smaller pixels than the 8.445 micron the D700 has, you should be able to resolve it all a bit nicer with similar FOV.
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  #12  
Old 27-10-2016, 12:29 AM
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Shiraz (Ray)
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Really good image Colin - nice work. Lens looks to be working very well.
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