47Tuc - a spectacular globular cluster of stars

One of the biggest and brightest globular clusters in the southern sky - 47Tuc, or NGC104 in the constellation Tucana.

Having some issues with the flats not being able to fully get rid of all of the vignetting, and also there were some pretty horrible gradients in there. So don't look too hard.

IMAGE LINK: https://flic.kr/p/zfri​ew

It's hard to see anything with the image being thumbnail sized as it is.

Hey Troy , what happened to your image ? GC are my favorites but like SiriusDoggy mentioned it's only in thumbnail size on your flickr page .

Sorry guys. Something weird happens when I post Astrobin links here. It works in the previews, then some minutes after posting everything breaks. I'll use Flickr links in future - much more reliable and know what I'm going to get.

There ya go!
Very nice. Is that another globular or distant galaxy upper left of center?

G'day mate. Thanks! Yes, it's a small background glob. There's another right on the edge of frame bottom centre. If I'd known more when I took the shot, I would have framed better for it. Live and learn.

troypiggo wrote in post #17737010
G'day mate. Thanks! Yes, it's a small background glob. There's another right on the edge of frame bottom centre. If I'd known more when I took the shot, I would have framed better for it. Live and learn.

Ah yes , fantastic image ! GCs' as I said have always been my favorites of anything in DS to observe . One night me and a good friend stayed up all night checking out all the DSOs' just in the MW region all the way down below Sagittarius . We had a great time . That region has several OC and GC that are big but it is also full of those small GC like you have here . These are the kind of night time DSO's that many photographers miss cause even with the largest lens and camera they can get will not show these beauties up close enough to identify them or even be able to see detail . Thanks for sharing , as I said this image is great !!

nice job troy, I dont see any gradients and btw I hate calibration frames, they never work well for me. It is really tough to properly get flats with dslr's unless you cut out the flip down mirror. OR do 5+ second flats. I just never do them and accept my losse, sad I know lol. This is a great processing, super clean, accurate star color and very tight round stars. Great Job

ok i see the yellow banding now. Try this if using PS

Copy image into new ps file as greyscale
open highpass filter and adjust so that most of the faint stars are picked up by the filter
after applying open threshold and adjust it with arrow keys while paying attention to the faintest stars.
Once you have white dots on the faintest stars hit save, copy the threshold layer baack to your original image
and paste into channels, not layers. Then save it as a selection
This is how to make a good star mask.

Now you can kill the banding by masking the stars by loading your pasted channel as a selection and then open selective color. Go to the blackchannel and fully desaturate the yellow slider. Voila no more banding.
It works, I just did it to your image on my latpop as a test lol.
Even with the banding, which is very faint its a great image.