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Posts Made By: David Simons

October 30, 2011 01:14 PM Forum: Deep Sky Observing

Stephan's Quintet

Posted By David Simons

Finally saw it last night.

Lake Sonoma, CA using a C14. Looked like a fuzzy clump.

Seeing this is a catalyst for some serious aperture fever !

December 12, 2011 07:58 PM Forum: Equipment Talk

C-14 Eyepieces, Etc.

Posted By David Simons

charles geiger said:

I have an old Orange Tube I bought new 1977....


I too have one of the older orange tube C14's, very sharp optics. I can only comment on the Nagler 31 which is one of my favorite ep's with this scope. I do a lot of manual sweeping and star hopping, and I do not recall any obvious visual distortions with this setup. Others may be more clinical.

I am also thinking about the 20 ES 100 and hope others will comment.

May 28, 2012 11:15 PM Forum: Refractors

8" F/6 Refractor

Posted By David Simons

An 8" f6 achromat is a somewhat unique scope. Dark skies and large fields of view are it's main claim to fame.

I built mine in a bit of a hurry more as a test of the lens. However it has worked so well, that I have never got around to doing a proper flocking and baffling job which I am sure would increase contrast.

Open clusters and large extended objects that most scopes just "see through" are it's main targets. Subtle low-contrast details seem to show better in these type of specialty scope.

Dark nebula around M11 and associated Scutum Star clouds, scanning the whole Sagittarius region at a dark sky location is a real treat. Galaxy hopping in Virgo is also great fun, when you can see groups of galaxies at a time.

I would not recommend this as anyone's first scope, and they are pretty expensive to buy new. But for an ATM like me, it has been a worthwhile journey.

If small galaxies and little globular clusters are your main targets, then it sounds like you will need more aperture and magnification than the 8" achromat can provide.

James Broussard said:

Hi Everybody, Iv'e read that a 8" F6 refractor on DSO and planets is mediocre. If someone here could confirm this {or not} I would
really appreciate it. As I'm desprate for a large refractor and
a 8" F/9 would not work on my CGEM. My main interest are GC and GX. How would the Moon,Sun and Jupiter fair. Thanks for your help.

De Lorme

June 17, 2012 09:19 PM Forum: Telescope Making

June 17, 2012 09:25 PM Forum: Deep Sky Observing

C11 vs 12" Dob

Posted By David Simons


Was at a star party last night and a lady had one of the Celestron Goto's, not sure which variant.

Pin sharp optics. Very quit goto's and near silent tracking.

She was with a group, and they would all take turns looking through the scope at fairly high powers. This would have been hard without tracking, as normally there would be a fair amount of adjustment to re-center the view in a dob, (as you know)

Something to be said for tracking.