Orange Tube C8, Tasco 7te-5, 4" Criterion Dynascope, Jason/Towa 313
Nikon Action Extreme & Pentax WPii Binoculars
At my club, everything one could want up to 18"
Quote:What is the aperture?JimC
Albert RV6's Celestron Ultima 2000 Royal Astro's Lafayette's 1950's 8" f/9 Edmund/Parks Newt 6" 1950's Edmund WF Newt Tasco 8V Coulter Odyssey 10
6" F4.6(w/Paracorr) Reflector , 8" F11 Dall Relay Scope ,
6" F5 RFT Refractor w/Istar Obj , G11 Mount Gemini1 Level 4
Telescopes are instruments of hope and faith. Hope that a better, clearer and brighter universe can be observed. Faith that we can bring these discoveries back to our small planet and create positive changes for all of it's inhabitants.
Quote: However, appraisers do not “set notoriously high prices” without some documentation to back up their work product, otherwise they would not be in the business very long.
Retired pilot with interests in grinding/polishing optics and with well made/simple telescopes showing uptdated the wonders in the universe.
Quote:An update on this telescope, instructive for some, a laugh for others:
Neither my club's treasurer or I could get this scope to focus, yet our optician focused it immediately and reported it has excellent optics. What's his magic?
It turns out that baffling a Maksutov is complicated at best, and not worth the effort at worst, especially for a home-built astronomical scope. The treasurer and I had each tried to focus the scope on a distant object during the day, when the extreme glare from the blackened, but un-baffled, tube obliterates the image. The optician tested the scope at night when, without the glare, it works fine, yet with a twist. Focusing on stars is no problem. Bright objects such as Jupiter are obscured with glare until they are exactly centered in the field, whereupon they suddenly snap to focus!
Living at a dark site, I make scope when I have the inclination. I also do woodworking, cycling and other outdoor activities
Homemade 'scopes 8"f/7,6" f/5", 6"f/4, 4.25" Schiefspiegler,60mm Coronagraph,60mm H-alpha system, 4.25" White-light Solar Newtonian,solar spectroscope, 4" f/12, 4.5" f/16 & 6" f/12 Schupmann Medial refractors, 4" Celestar, 19 Stellafane awards 9 in optics Engineering = Taking what you have and making what you need.
Quote:Does the scope have any baffles at all?
Active instruments: 4.25" f/6 Newtonian on altazimuth Springfield mount with crutch tripod -- telescope for the handicapped. 12" f/6 Newtonian Telescope maker since 1958; always more to come? Well maybe just one more and it will be something very special Stellafane Awards: 1977 1st award for 4" f/6 refractor 1978 1st award for 4" f/4 Lurie Aplanat 1983 1st award for Newtonian smoking pipe For Sky and Telescope articles, please see Bio info.
Quote:...The ATM is from a period before modern ED glass.
Quote:Maksutov-design scopes do not use ED glass.