Quote:
Originally Posted by Paul Haese
Colin, there is certainly some blue reflection within the field but mainly close to the main nebula. The bright O stars there are causing that nebulosity. However, I think the surround blue is probably a little over saturation.
Overall its an interesting looking field and the colour is nice too. I like how the golden stars shine through various areas.
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Thanks Paul, I believe there is some discolouration being caused by the lack of a luminance (UV/IR) filter. Unlike with a refractor I'm not getting the UV/IR bleed causing larger stars (the IR bleed on my refractor was instantly obvious!) but it does cause some near purple smaller stars across the field. It could also be that the bayer matrix is less than perfect with its cutoffs and that could be causing some colour bleed through the different channels.
Quote:
Originally Posted by gregbradley
I'd say its likely its real. An F3 8 inch scope is collecting a lot of light fast, couple that with your high QE CMOS camera and you are getting deep fast.
I would expect to see things not normally shown with a setup like that.
Wonderful colours by the way. M16 often is boring.
Its like using Fluorite APOs, they pick up subtleties like this.
With the tilt the left hand side will be the right hand side of the camera looking at it from the back of the camera. The top left corner is the bottom right of the actual camera. Keep that in mind or you'll never correct the tilt.
The image is reversed top and bottom and left and right compared to the actual camera looking at it from the back of the camera.
I just relearned that little lesson setting up my Honders again after a hiatus.
Greg.
You probably only need a smallish packer. I use spark plug spacers. You can get a set from Supercheap Auto for a small amount.
Greg.
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One of the real difficulties with this area is that there isn't much many RGB without added Ha to compare against but you are right about amount of light it chews up!
What you're seeing there is ~40 microns of tilt that I'm planning on fixing over this coming full moon period. The ASI094 has an inbuilt tilt adjuster so it's just a matter of dealing with 3 sets of push/pull bolts which is nicer than having to deal with packing out corners
