6" F4.6(w/Paracorr) Reflector , 8" F11 Dall Relay Scope ,6" F5 RFT Refractor w/Istar Obj , G11 Mount Gemini1 Level 4
"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
I don't get no respect, but my scopes do! ---------------------------------------------- 1961 Swift 60mm model 839 (2); TV-102/GM-8; 1959 8" f/6 Treckerscope; 1959 8" f/7.4 Murray Scope; 1978 4" Edmund Astroscan; c. 1992 4-inch Celestron-Vixen SP-C102; c. 1950 20X60 Saturn spotting scope; 1963 7X50 Nippon Kogaku binoculars; Unitron #114 alt-az mount (Swifty-tron); Takahashi TOA-130S/EM-200USD3. Sold: my Fecker Celestar-4 after 40 yrs. of ownership (1970-2010).
Astronomy educator/Sidewalk astronomer
Owner of Astronomy Delight franchise
18 inch f4.42 Dob on eq platform w ST120 f/5 finder
12 inch Zhumell Dob
8 inch f/6.9 home made Dob with Seevers optics
William Optics red 10th Anniversary 80mm FD
C8 XLT on Vixen GPDX
26lb eyepiece box
Cernan Space Center astronomer
Member of Northwest Suburban Astronomers
Quote:These are big heavy scopes on massive mounts. More than once Pete and I discussed whether there would be a secondary market for one of these. Our inclination was to think "NO" because of the heaviness of the OTA. It is possible that one could however remove the optics and install in a modern OTA that would make for a more manageable arrangement.
16" F/4.5 Newtonian on Parsec GEM (in roll-off roof observatory) 10" Orion Dobsonian Celestron C-90 2.4" Jason refractor Borg 45EDII refractor 15x70 Celestron Skymaster binoculars Canon Digital Rebel XSi(modified) 18-55mm Canon zoom lens, 50mm f1.8 Canon lens, 105mm Sigma telephoto http://joewheelock.0catch.com
Quote:Quote:These are big heavy scopes on massive mounts. More than once Pete and I discussed whether there would be a secondary market for one of these. Our inclination was to think "NO" because of the heaviness of the OTA. It is possible that one could however remove the optics and install in a modern OTA that would make for a more manageable arrangement.How do you rate the optics in these beasts compared with say a decent set of Zambuto mirrors?
Quote:They get opened up to the public which gets views that are horrible but they don't know better.
Quote:I'm sorry, but I can't let someone trash B&Cs like this without chiming in. B&C was the top-line company supplying university observatories in the 1960s to mid-1970s. Current high-end mirror makers have NOTHING on the optics B&C was producing back then. Periodic error? I'd be indifferent between a B&C (or Ealing) mount and an AP1200 or Paramount in terms of gear quality. (Obviously, there's a huge difference in electronics/software integration now.)It's not fair to disrespect a scope because it was designed to be in a permanent set up and because most of those set-ups aren't optimally located. "These instruments are too nice to throw out..." REALLY????
Quote:So if some outfit lets a local astro club know that they are willing to donate their fully functional but unused B & C, do you think it would be a bad idea for a bunch of the club members to show up with a crane and flatbed and haul it off to their dark sky site. Maybe even construct a brand new dome or ROR to house it? Since we're talking volunteer labor (probably including the truck and crane - there are all kinds of trade guys at astro clubs!) the only real cost would be a new structure for the scope assuming none already existed for it.How much for a 16" RCOS and a PME and all the other things needed to make a brand new scope operational? Not to mention if you need a new house for the B & C you'll probably need one for a new RCOS too.The argument seems to be that all of these B & C are in a poorly maintained and junky state that would require a ton of money and manpower to set right again and then whoever drags it away will have to pay some company top rates to do it. I don't buy that at all. Maybe some are neglected, maybe even most, but the scenario I mentioned first doesn't sound too off to me.Nice post though. It wandered all over the place but I didn't mind so much because a lot of it was interesting.
Quote: But B&Cs have an odd place in the world. Not enough of them to attract the scrap metal industry... It doesn't matter whether the scope is for outreach or research... As for B&C optics... You get diffraction limited or better. But they're not going to clean the clock of a zambuto or vice versa. Purists will especially object to the HUGE secondary obstruction... It's basically a huge motorized can that moves the secondary in and out to achieve focus. There are buttons on the rear for that...The B&C OTAs add considerable thermal mass to the tube. I did not see any fans.... My guess is that the secondary assembly must weigh 20 lbs or so, and it is held up by a hefty spider... I know we measured the CO but I forget the exact dimensions, I think it was at 40% or more not counting the supports... I'm not sure the sentimentality is warranted...The problem here is that the research institutions don't want that aperture... When I put in my week of time researching ways to make the B&C more usable...
Quote:You can see photos of the telescope and the old control panels here, when I photographed the staff cleaning the 40" mirror./Ira
Quote:This one is a goner. 24" f/75 Cass formerly Mauna Kea UH24. Took these in November 1990.
Quote:Wow, Jeff: I didn't realize that was a B&C scope! Does the scope still exist in some form in storage, say?
I've got a plot south of Milford Utah that they'd be more than welcome to set it up on, if it's still around and just looking for a home!
Tim's retirement observatory thread