I really like the NV idea with my Vixen Porta II on 2" EQ6 legs and small fast refractor (which I do not own yet).
Also I am from Canada and only know of one NV retailer I know of is http://www.brandonop...a-Night-Vision
I may reach out to one of you in the future for optimal set up recommendations for my grab and go
Small fast refractor is nice if you like small fast refractors, but a better choice for nebula would (in my own opinion) be a slightly larger and much faster reflector.
Something like a 6" imaging Newtonian used with a Baader MPCC would be better for Nebula. A Comet Catcher (f/3.6) would be good to, but you can't use filter wheels with it. Very fast and low coma though.
A 6" f/5 would not need a coma corrector and once again, it is faster, but also much more aperture.
For NV (and for imaging with the new video chip based Imagers like the Revolution R2, (which is so darned inexpensive that I my get one myself!!!!) reflectors simply offer the ability to greatly improve nebular views due to the very fast focal ratios they allow.
I bought an 80mm f/6 Apo for use with image intensifier, while it works fairly well, every time I use it I find myself wishing that it was faster than it is.
I was out in near dark skies in south Texas a couple of weeks ago viewing the Heart Nebula (Wow! What a glorious sight this nebula is.. One of the best in the sky! ) The Nebula nearly filled the field of view in the PVS-7 on the 80mm f/6 Apo, and while the heart shape was quite clear and there was a lot of structure, I know from using faster telescopes that I was leaving an incredible amount of faint, fine detail unresolved.
I could see this! Not with the fine detail as shown in the picture, but all of the major structural elements were easy to see.
I just found myself wishing I was using something like f/4 or f/3.6.
That was the first time I had used the small Apo under really good conditions and again, while it worked quite well, I knew that I was being held back by the tight bit and slack reins of the little scope. I need loose and fast, and the faster the better.
This is where it led:
Here is a 6" f/4 imaging Newtonian that sells for $$300. This is less than I see some 80mm achromats sell for more on the used market!
Since the power is low with something like this, and since the view is real time, it does not matter if the mount is not super stiff. The short tube also makes less demands on a mount than a refractor with everything hanging out on one end.
Throw in a Baader MPCC, and now you are rompin in the big nebula rodeo in the sky!
Edited by Eddgie, 15 February 2017 - 02:02 PM.