"You would think that I am wiser after traveling around the Sun 62 times."
8" Cave Astrola deluxe. Elli Buk 10" Cassegrain Cave, Cave astrola 8" f/8 , Cave Astrola 10" F6 super chrome deluxe, Losmandy G11 Gemini 2, Celestron 1100 Edge HD, William Optics 98MM flt 5" Unitron with field tripod. Astrophysics 800 mount
* * (AVEMAN AWARD * *
"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
Quote:What is the central hole diameter? Protostar had a small diameter Blacklite tube already flocked that is approx 38mm outer diameter and was a good fit with some adhesive felt for my DK primary baffle.Dave
Classic refractors; visual observer, old school.
"Toto, I have a feeling we're not in Kansas anymore."
Quote:Hi Tom,It's already looking great, just with a little cleaning. You are going to have one fantastic telescope there. With regard to the mirror: After cleaning, it looks great, as you say. I would attribute this, at least in part to the coatings. As I remember when I sent my 6 inch F4.5 mirror off to Cave for the final parabolic figure and for aluminizing, that in their literature they advertised special, corrosion-resistant coatings along with the aluminizing. If I remember right, they said that a fine layer of zirconium? was deposited over the aluminized surface to protect it. They said that the finish on the mirror, thus treated, should last many years with proper care. This was in the mid 1960s. Which brings me to my last point, I wonder if "Chemoptics" hand written on your mirror could have been the people who applied the aluminizing and coatings. My point being that maybe you do have a Cave mirror? Perhaps some of our other SoCal folks here that remember Cave back in the day may be able to shed more light on Chemoptics.
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!
Quote:Really!........."Astronomical" themed ziploc bags. Very professional. You cant teach that.
Quote:The telescope back was pretty pitted and oxidized (see earlier photos). I did some research on polishing aluminum on the internet and discovered a company called Zephyr. They have polishing compounds, polishing wheels, and a system to get a mirror finish out of aluminum. Here is what I bought.The bars are the polishing compound. Different degrees of cutting and polishing. Brown is the highest grit then white and finally rouge red. The polishing wheels also have degrees of roughness and ability to polish. Finally the buffing wheel is used last to get the final finish.
1964 Tinsley 8" Dall Kirkham 1950's Goto #103, 104-Sold, 106-Under construction 1920's E. Vion 45mm refractor 1979 OTI Quantum 6 Zeiss OEM-2 15" Discovery Tak FS-102 on EM-10 Mount Friends with a guy who owns a 9" AP Refractor-WOW
Quote:Might just start with rubbing compound on cheesecloth and see what you get before sanding.Great work so far!Dave