No relation, no connection. Just passing on info. http://philadelphia.craigslist.org/for/2832138416.html Rare Criterion Dynascope 6" Telescope (Havertown, PA)...
Hello everyone I just joined this group. I have always wanted a Criterion RV6 and I finally found one. It is quite complete with 5 origonal eyepieces and is...
Congrats on your score! The price sounds good with all the accessories and overall condition of your "new" scope. Restore, refurbish, rebuild...who cares. Just...
Larry, The serial numbers don't seem to mean anything as far as dating the scope goes. If the motor drive has the original motor, there will be a date on...
I heard of a RV regestration page? how do I access it? Also any clue in finding the Mfgr date by SN#? A dob mount HMMMM, I could put it on my LDX55 mount.. I...
I will certainly get pix uploaded before I get started, but if you want to see it the auction just ended on EbAy today. I like the way they put the finder in...
Brought home a RV-8 today to add to my family. It will need a little work to clean it up. Not sure of its age, but the legs do have the large pads on them if...
Kenneth, Â Sounds like a good addition to the family! The finder sounds a little puzzling - is it smooth white or wrinkle in some shade of blue/grey? I don't...
I did find photos of other RV-8's here and my finder is just like theirs. Puzzling why Criterion has the 2 grooves in the finder body, but they do not line up...
LOL! Don't be a hater. I love you man! Okay, how in the world did those diabolical engineers at Criterion get the blasted spiders in the tube? I never did get...
Can someone tell me what the original configuration was for how the mirrors were in the cells? My 6" was sitting on cork pads over the collimation screws with...
For one old RV-6 I'll show you the trick to replacing the spider. He he he. Here is a clue: it involves magic and sometimes cursing. At the factory they...
Sounds like you need togo out and play a little LOTTO!! If you win Please deliver my New Red Mustang Convertable ASAP for the advice LOL WOO HOO. The owner may...
Will try and get some pics soon. She's all apart right now getting a much needed bath and a little touch up on some of the paint. Boy was it filthy. The tube...
I specifically remember that you could order a scope that was built for astrophotography where they would install the mirror up further in the tube so that the...
I'm going to have to measure the FL on the mirror and run the numbers on the the tube so see what comes up. Can someone tell me what the diameter and length is...
" One note about polishing, when I polished up my setting circle it removed the black inking in the engravings. I do not like using steel wool on aluminum as...
If the focal plane of the mirror is way out there, you may indeed have a photo special. Even the standard version focuses high by today's standards. I once had...
For what it is worth, some of you already know this, when you move the mirror up in a Newtonian you create vignetteing at the secondary and possibly at the...
If it were a Photo Special, would visual observation even be possible? I opened the drive casing today to see what nastiness was in there. Not too bad. Some...
If the cork is intact all it needs is to remove the aluminum oxide. Carefully brush it with OO steel wool, also polish off the clutch plates with the same...
Well, I got further into the motor housing today. The cork is shot. There was way too much grease in there and it got all over everything, including the cork....
Can someone tell me a source for the nylon washers that go on the two 1" shafts? I measured them at 1.375" O.D. with a 1" diameter hole and .0625 thick....
Replace them with Teflon or hdpe washers which you can make from sheet stock. Cut them out with xacto knife on the inside and scissors on the outside. You...
Kenneth, the thickness does not matter. You can use plain, unpainted, unprinted cardboard just as well as cork. You can use leather. It is dry and not...
Hello group, my name is Larry and I teach Astronomy in Pittsburgh. I came into school yesterday to find a large Criterion Box with a white tube RV-6, with all...
