Skip to search.
Make Y! My Homepage
Visit Yahoo! News for the latest.
Close this window
· Big dobsonian telescope users.
The Yahoo! Groups Product Blog
Check it out!
Founded: Jun 20, 2000
Already a member?
Sign in to Yahoo!
Yahoo! Groups Tips
Did you know...
Message search is now enhanced, find messages faster. Take it for a spin.
71 cm Go-To dobson under construction
Dear all, I'm building a 706 mm f/3.1 newtonian. I prepared a facebook'
s page to describe it. It is in Italian, but the photographs are multilanguage ;-) Here...
Aug 5, 2012
Looking for Sky Commander XP4 DSC
Hope you won't consider this too off-topic. I have a new 24" and am looking for a used Sky Commander XP4 & encoders if you are looking to change your setup. ...
Jul 27, 2012
Hello! Just got myself a big dob.
If you regard an 18" as a big dob, that is. I'm from Richland, Washington. While at a conference in Bellevue, I found a very good deal on astromart for a...
Jul 7, 2012
Installing large mirrors
Hi I'm thinking about getting a 25+ inch dob but one topic that I can't find much info on is the process of installing the heavy mirror into the mirror box. ...
Jul 7, 2012
First light approaching for 1100 mm (43") telescope
Very exciting times, we're approaching first light for the 1100 mm telescope. The telescope is now nearly finished, everything has been adapted to the new ...
Jul 2, 2012
Junk Links Sent From my Account - Warning, Don't Open
Hi Everyone, Sorry, But it has come to my attention that something or someone has been using my email contact list to send advertising links to my friends and...
Jun 16, 2012
Hello all whom may be interested, Recently it was brought to my attention that there was a possible issue with the threads on my Astrocrumb FilterSlide...
Jun 6, 2012
Glatter Sling How to Find?
My googling did not help me find where to buy a Glatter sling. Howie, where are you? Jud...
May 30, 2012
How Dirty does an open tube get after 5 years ?
May 23, 2012
<p>Find out How to earn serious money online using a revolutionary system<br>
May 16, 2012
A second start for the 1100 mm telescope project
Hello everybody, The 1100 mm telescope project we commenced in 2007 is taking a second start after nearly 4 years of interruption. See the web page for the...
May 15, 2012
90 Degree Edge Supports
The Cruxis Mirror Edge Support Calculator shows that two-point mirror edge support performs nearly as well as a 180 degree cable sling, with similar degrees of...
May 3, 2012
PTFE Teflon strips
Hey everyone. I have acquired some PTFE strips 1/8" thick x 1" wide x 9 ft long. I can cut these into any length you desire. And if you need 3/4" wide, I...
May 2, 2012
28" Dob. Rockin New Mexico
BigDob group, this spring a 28" f4.1 Starmaster w/Kennedy optics has been installed in a new astro village 30mi south of Silver City, New Mexico. Last night...
Apr 24, 2012
mirror thickness for a 24 inch
Hi, I'm tring to decide on a suprax mirror blank thickness for a 600mm - the maximum size of their moulded blanks, the choice is 45mm or 60mm? I have made two...
Apr 23, 2012
Refaction caused by boundry layer in reflector?
For several years I have had a 16 x 1 inch mirror with a fan on the back and small 1 inch fans that blow across the font and so had not noticed the following...
Apr 22, 2012
Coulter 13.1 Mirrors,,,recoating
? references wanted
Have a Coulter 13.1 Odessy 1 scope. spoke to a couple of recoaters about the primary mirror and both find that they have recoated many. Has anyone had their...
Apr 18, 2012
Dobsonian mounted cassegrain?
Has anyone got any photos/links to a large dobsonian mounted classical cassegrain? I have a chance at getting a heavy (125 lb ) OTA and am musing about...
Apr 12, 2012
How many 28" & > amateur scopes on the www?
Bigdob group, here is a sample list of 30 of the worlds largest privately owned amateur telescopes found on the web. Abellhunter ... ...
Mar 20, 2012
Hi, just joined the group. My name is Geoff. I live in Red River NM and I have a 24" Techtron dob and observe at 9,800ft. I would like to invite anyone who...
Mar 19, 2012
Slightly OT Dob Driver
Dear All, I have a dob mount that I want to motorize. It previously had a Dob Driver II fitted. The simplest thing would be to fit another, but my e-mails to...
Mar 17, 2012
Requesting help with crushed tube method for my 16"
Hoping someone can help me understand how to make good connections for a crushed tube ends to the UTA bottom ring. I want to crush then end of the tube, and...
Mar 13, 2012
New to all of this and "in the state of confusion" :)
Hi Everyone,,, I am an aviation guy who cant afford the hobby any more,,, so in search of a new past time,,, I happened upon a 13.1 inch Coulter Oddessy 1. ...
Mar 6, 2012
I am wondering if anyone could recommend a place to have a mirrors reground and re-aluminized. Also where to find other parts to put a Newtonian together. bill...
Mar 4, 2012
amateur astronomers statistics
Dear all, have some of you an idea of how many amateur astronomers are out there? For example S&T have about 80000 copies (if I remember well), but of course...
Feb 15, 2012
Is this a worlds record?
Astro Heads, One August night, high in the Andes; Simon, Bernard, and i bagged 101 Globular Clusters in a dusk to dawn Globular Cluster Marathon! i think...
Feb 3, 2012
22UC Prime Focus
Hi everybody, I would like to do some prime focus photography of the moon with my 22UC and my Canon EOS550D (Rebel T2i). Unfortunately, I cannot get a focused...
Feb 2, 2012
20 inch mirror thickness
Hello to everybody in this group. Next year I am planning to start building 20" Dob. I have one simple question : Should I go with 2" thick mirror, or 1.8 or...
Jan 27, 2012
Largest FOV with UC22
Hi, I own an Obsession 22UC and I wonder what is the widest FOV I can expect with it without any obstruction, vignetage... Right now, I am using a Nagler 5...
Jan 22, 2012
Nils Olof Carlin
World's Biggest Telescope To Be Built By China
Jan 20, 2012
Just address an email to firstname.lastname@example.org
Jump to a particular message
Copyright © 2010 Yahoo! Inc. All rights reserved.
Terms of Service