bigdob at Yahoo! Groups

Re: 23" Ultra Light

Dennis — Fri, 06 Nov 2009 13:50:36 GMT

Yeah!! Good point. How can an "ultra light" and 60# mirror have anything in common?? My customer, Don, tells me it was a mirror from some sort of

Re: 23" Ultra Light

John — Fri, 06 Nov 2009 00:07:57 GMT

The very thick mirror (3.85") seems to contradict your subject line. Any reason it's so thick? -John

Re: 23" Ultra Light

Dennis — Thu, 05 Nov 2009 19:03:25 GMT

I'll ask the owner of the scope to weigh the components and let me know. More later.. Dennis

Re: 23" Ultra Light

Dennis Wilde — Thu, 05 Nov 2009 00:06:29 GMT

Nice job! Dennis ... From: Dennis Subject: [bigdob] 23" Ultra Light To: bigdob@yahoogroups.com Date: Wednesday, November 4, 2009, 3:15 PM

Re: 23" Ultra Light

Gordon Pegue — Wed, 04 Nov 2009 20:41:18 GMT

Nice looking scope. What an odd size for a primary.... What's the assembled, ready-to-observe weight? Gordon ... From: bigdob@yahoogroups.com

23" Ultra Light

Dennis — Wed, 04 Nov 2009 20:15:28 GMT

Hi all. I thought you'd be interested in seeing a 23" telescope I built some components for. Turned out quite nice. Check out my webpage at:

A really messed up mirror

gnowellsct — Wed, 04 Nov 2009 04:00:25 GMT

http://tinyurl.com/ylepl9p As a follow on to my post regarding a ten inch f/6 Optical Craftsmen, I'm posting this link to a "classic telescopes" thread which

Re: great tips on Lasers

pensack1 — Mon, 02 Nov 2009 01:17:30 GMT

That should be true, but I can see the beam quite well in the desert in near-zero humidity. Of course, there the dust may be the reflecting medium. But I could

Re: great tips on Lasers

Panoscanner — Sun, 01 Nov 2009 13:31:46 GMT

Green lasers are a great tool to expose sky conditions. Remember, you will only see the beam if there are particulates, or water vapor for the light to

Re: great tips on Lasers

pensack1 — Sat, 31 Oct 2009 17:54:47 GMT

Green lasers make excellent teaching tools, but watch the brightness. Most lasers I've owned were "less than or equal to 5mW, the maximum legal limit not

great tips on Lasers

sbrdude86 — Thu, 29 Oct 2009 14:37:09 GMT

Hi group found this link trough a Keck Engineer. http://www.repairfaq.org/sam/laserdio.htm There is some good info on green lasers here. Dave

Re: f/6 ten inch on AP900QMD, and mirror questions

atmpob — Tue, 27 Oct 2009 01:13:51 GMT

It seems to me from you long ramble that first you want to know if the mirror is any good. You can see that something is wrong and want to sort out if it is

Re: f/6 ten inch on AP900QMD, and mirror questions

starryskyn — Mon, 26 Oct 2009 22:11:47 GMT

Pinched mirror in cell? Rotate 90* and recheck. Bad or pinched diagonal? Replace. Chipped mirror back? Stress induced or relieved by damage, needs regrind

f/6 ten inch on AP900QMD, and mirror questions

gnowellsct — Mon, 26 Oct 2009 20:54:19 GMT

Greetings Big Dob group, it has been awhile since I've been here. I wonder if anyone has had an experience on mounting a Newt on a quality GEM. I have a

Voyager to Argo Navis and ServoCat

Roger Greenwood — Mon, 26 Oct 2009 17:37:33 GMT

Tim: I tried it real quick before I headed out to work aligning my scope with a rough esitmate for the 2 star alignment. It seems to have worked. Yea!!! Thanks