... probably ... 1968, ... William could you PUt me on your list for your criterion focuser? Let me know when you get your new JMi focuser? Tell me does it...
i would like to get the info on collimation that marc offered please email me a copy at mirishnd2000@... [Non-text portions of this message have been...
I have acquired a very nice used focuser that I would like to put on my RV-6. The problem is that the existing hole in the telescope tube will have to be...
Mel Bartels has an excellant website with information on collimation. I have posted the link in the "Tips and Techniques" folder that I created in the Links...
I was given a brand new set of Celestron eyepieces the other day. The set includes a 32 mm Plossl, a 15 mm plossl, a 9 mm plossl, a 6 mm plossl, and a 4 mm...
3047
Chris Candrl
frebird2@...
Feb 4, 2003 4:00 am
Does anyone have one for sale? Can anyone suggest a replacement or work around? The motor hums right along. The gear train on the other hand is shot. The ...
As I'm sure you know, the different eye pieces give you different magnifications. You can make this calculation by dividing the focal length of your primary...
"what exactly is the motor on the RV/8 for?" Beats me, what do you think? Grinding pepper?...
3051
John Rusho
jrusho1@...
Feb 5, 2003 2:18 am
Peter, Don't recall if you got any help on your inquiry. I would hesitate to alter the tube of this classic, but if I were to, I would do it thusly: Mark in...
A motor or "clock drive" on a telescope mount lets the scope follow a star across the sky as they rise in the East and set in the West. Non-motorized mounts,...
Peter - Make sure to remove the mirrors first ! Bob L ... to alter ... then file ... I would ... cutting disk ... will focus ... on ... tube ... the ... ...
Thanks Bob. I am torn between improving usability and keeping it as original as possible. It is my only telescope so I need all the performance I can get out...
Hi Peter, I don't want to inflame the folks who want to keep all things original but, given your comments, I wouldn't hesitate to slightly enlarge the opening...
Thanks Richard. I am pretty sure I want to enlarge the hole because this focuser is way better than a Criterion original in perfect condition. Also, I had done...
3057
John Rusho
jrusho1@...
Feb 6, 2003 2:54 am
Peter, I'm kind of in the same boat as you. I modified my RV6 (new 1967, sold 1970) every which way but loose. Tom Cave wouldn't even recognize my 10" of ...
Last Summer I was at Stellafane and was digging through the treasure at the swap meet when I spotted a Criterion U-7 focuser. The movement was rough and the...
okay here we go, i have spent the last few nights out doing some viewing. While I am seeing things I have never seen before since getting the new eyepieces, I...
Do not abandon your mirror ! It is the heart and soul of the Dynascope and the best thing in it. Have it examined by someone who knows how. If you are not...
... Should definitely have the mirror redone. If you go to www.dynascope.com and check out the articles there is a restoration article there with links to two...
3062
John Rusho
jrusho1@...
Feb 6, 2003 11:21 pm
Hello wovoka, I agree wholeheartedly with rromer's answer. The mirror probably only needs recoating. As a group, the Dynascope mirrors were pretty good....
3063
John Rusho
jrusho1@...
Feb 9, 2003 12:26 am
David and all, Another dinosaur lives! RV6 SN 2723, c.1967, got its first light in many years tonight. I am restoring it for a planetarium. I have gone through...
Check it out, there's an RV-6 mount for sale on Astromart http://www.astromart.com/viewad.asp?cid=172862 Asking only $50! I have no affiliation.... William...
The mirrors need to be recoated. I recomend that you send the primary and secondary mirrors to Spectrum Coatings of Deltona,FL and have them recoated with...
I have two old Criterion eyepieces. One is a 7mm "A.R." (achromatic Ramsden?) and one is a 4mm Ortho. The Ortho is in excellent condition and the AR is in very...
Years ago I tried to tighten the slack of the worm in its bearings by tightening the upper adjustable thrust bearing. I was able to get it pretty good but when...
