Quote:
Originally Posted by Satchmo
As we speak I know of 3 high end rigs being constructed in this country using 12" to 14" Newts and high end cameras ( Paramounts, Asrophysics mounts , plus ST11000 cameras etc ) so
the image quality of well constructed coma corrected Newts as astrographs is not unknown amongst advanced astro-photographers.
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Indeed, I drooled over the ASA astrographs when Mike had one. If only they could have fixed that flexure problem. Anyway, time moves on so I found the RC at significantly less than the ASAs, easier to use (I have trouble balancing this scope on a GEM, I think I would have struggled seriously with a Newt) and a bit more focal length, which I have always liked.
Strange thing is I like to image galaxies, but they are difficult to get right compared to extended objects like nebulae, they also tend to be dimmer. What I really need is a huge F20 scope, but that's not going to happen. So I ended up with an 8" f/8, which allows me to do some of the smaller extended objects and some of the larger galaxies, the small ones will just be small. I also have the 10"SCT for planetary imaging and an ED80 for really extended objects. So now I know that if I want something at about 8-10" f4-6 I can go Newt shopping, get a coma corrector and I'm away.
Cheers
Stuart