John Agnew said:
I've been thinking about getting a scope(& mount) that would be more easily dealt with on a camping trip than my C9.25 CPC. My initial thoughts were leaning towards an ETX 127 or something similar. I know there are some nice refractors of about the same size that might work too, but I'd like to keep the price below $700. What small scopes will give me the best views of DSO's? I just spent a few weeks in an area with amazing skies, armed only with a small pair of birding binocs. Never again.
We can continue the refractor vs reflector fight here, I suppose.
John:
I also suggest a smaller, relatively fast refractor, somewhere between 80 and 102 mm. I want my "grab and Go" scope to be a compliment, a companion, to my larger scopes, I want it to be competent at all types of viewing but I also want it to do the things a small scope can do that a big scope can't:
1

Easily Portable
2) Provide spacious Widefield Views
3) No thermal stability issues.
A small refractor seems to fit that bill nicely.
I did have an ETX-125, it was a decent scope, and relatively compact. However, for me, it is severely restricted by it's 1900mm focal length and 1.25 inch focuser, this limits the True Field of View to something like 0.85 degrees, hardly the scope to take in the Veil or wander around the Milky Way just taking in the sites. It also does take it time to cool down and be ready. With that long focal length, the ETX-125 is essentially a small scope best suited for planetary and double star viewing.
In comparison, an 80 or 100mm refractor at F/6 or F/7 will provide a nice wide field of view, at least 3 degrees and maybe 4 or even 5 degrees. For me, these are some of my favorite views and are not possible with something along the lines of the ETX-125... Such scopes are about the most thermally stable one can get.
For good performance on a budget, that Orion 100mm F/6 is hard to beat, I enjoyed a 100mm F/6 for a year or so, moved up to the ED-80 eventually ended up with an Astro-Tech 102ED. Probably a bit over your budget (~$700 used) but IMHO, it's a wonderful compromise, enough aperture to provide satisfying views of most targets and yet still relatively compact. Of my several scopes, it gets the most use, both as a scope for a casual evening in the back yard or a companion up in the mountains.
Another scope worth considering is the Orion SpaceProbe 130ST or the Vixen variant. This is a 130mm F/5 Newtonian so it has a nice short focal length, I think it's about 24inches long and capable of some wonderful views, both widefield and high power. The downside is that, like any reflector, it does take it some time to cool down and it does suffer from the various fast Newtonian issues, coma, likes good eyepieces... But cooled down, with a 2 inch focuser, a Paracorr and some nice eyepieces, it seems like I am looking through a refractor...

The bottom line is that there are a lot of choices to try, many of us have tried most of em and found out what works best for our particular needs. Personally I think the place to start your search is with something along the lines of a used ED-80. It gives a way a bit to the 4 inchers in terms of absolute performance but the optics provide pristine views from the lowest magnifications right up to the limit and the price is definitely right...
Jon
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