View Single Post
  #8  
Old 19-01-2012, 03:25 PM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 18,183
Quote:
Originally Posted by LightningNZ View Post
Love the repro Greg! Crazy colours in the main nebula. Looks like some ghosty is reaching out to pluck the galaxy! Very cool.

Cheers,
Cam
It is an odd object and also rather faint.

Quote:
Originally Posted by Stevec35 View Post
Hi Greg

You aced it this time. The repro looks much better.

Cheers

Steve
Thanks Steve.

Quote:
Originally Posted by Paul Haese View Post
Big field of view and a rather large object. I don't suppose you considered a composition a little to the left to capture a larger galaxy? How long were your subs?

I like that smokey look of the nebulosity, it gives a 3D feel to the image.

Looks like you have similar reflections on your brighter stars as I do, albeit that yours are a little more diffuse than mine. There are large halos around those stars and I am assuming this is reflections?? Do you think your sub lengths influenced the size of those halos?

Interesting object and one that I will have to take a look at sometime in the future. Thanks for posting.
Yeah those halos, I don't think they are reflections I think there was a bit of high cloud when I did the rgb shooting. There was one night where there was a bit of high cloud around for a while. Its not in all the subs only some. I didn't notice getting reflection halos at all with this setup.
There may be some bloat that comes from the fast scope and the small wells but even then I didn't really notice much. I think that occurs more with my TEC180 and the fact its both fast and large aperture.

By the way Paul I got red ringing on the brighter stars in the initial colour combine. I checked the FWHM values on the same star in all masters and the red was bloated for some reason. Perhaps the seeing was bad for a bit. I did deconvolution 30 iterations, positive constraint only on the red and it brought the FWHM slightly under the others. I did a new combine and no red ringing so that technique works well.

Greg.
Reply With Quote