Celestron C8 Registry
"If you want to succeed in the world, you don't have to be much cleverer than other people. You just have to be one day earlier.” -- Leo Szilard
Cave Mirror Registry
1971 Cave 10" f/6 Custom Super Deluxe
1958 Cave 10" f/7 Model C De Luxe
1974 Cave 8" f/8 Model B Deluxe
1970 Cave 8" f/6 Lightweight Deluxe
1971 Unitron 145C
1 Caveman Award!
Friends call me Duane. Compustar C14, Leo Henzl's Custom C8, 6" Refractor Adv. GT mount, 6" F5 Omni XLT Newt., LXD-75 F4 Imaging SN8, Meade 8" F6 Newtonian, EX Dynamax DX6, RV-6 ETX-90 Astro, Meade 2045 4" SCT, B&L 4000 Vixen/Celestron 80mm F11 JC Penny 60mm AZ/ALT Refractor Binos 25x100
President Southwest Florida Astronomical Society, Inc.
Have Scopes, will observe!
"The White Zone is for loading or unloading of passengers only. No Astrophotography." Cosmic Acres! Greatest restoration challenge: Tulley and Sons 3" achromat on Altazimuth mount, circa ~late 1820s
Chris Celestron C8 "Orange Tube" Orion XT6 Dobsonian
Quote:I have a orange C8 from the early 80's that I was using last night. With the scope collimated and defocused on a bright star I see very nice rings. However, it almost looks like a very thin waterfall slooping down towards the center on one side. Is this an indication the secondary screws are to tight? I have never seen this before in any orange C8 I have had and I have had a few.
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.
Homemade 16"F6.5 dob(Stellafane optical winner 1996) and 22.6" F4.9 homemade mirrors, 10"F7 dob (Stellafane 2nd opt 2009)Celestron Ultima 9.25 dynascope RV6 1973, Orange C14 1975,orangeSupC8,c11/C5orangetube CGEM, CGE, Meade 30 UWA5K,34&28mmSWA 5k,14mmUWA4K 4K/ES9mm&14mm100degree/panoptic 22mm/nagler11mmT6/7mmT1/3.5mmT6/T.V.WF 19mm and 15mm, Cel AXIOM LX 23mm/15mm Sears 80F15 3#4454/sears4-6344 76mmf16