Hello - I have a RV6 focuser and finder with bracket. Both are marked Criterion and both are undamaged and in good working condition. Original screws, etc....
I finished "restoring" the RV-6 I have and I've got it out pointing at Jupiter, and the focus is quite bad, and there seems to be a haze around it as well. It...
I cant achieve focus unless i wear my glasses. (i'm nearsighted) which makes high power viewing difficult. Larry ... [Non-text portions of this message have...
Because you don't have enough inward focuser travel? Make sure the drawtube is down. If it is, try loosening all the collimation nuts equally, to move the...
Dan, Â I can't tell if you are reacing focus at all. As you move the focuser, the image reaches a smallest size, even if not sharp, and then expands as you...
You should be able to focus without glasses. I am nearsighted, also, my right eye Rx is -1.75 diopters. If you do not also have astigmatism, it is no...
Dan, my 8" Dynascope has an extra draw tube that can be pulled out or pushed in as needed to reach focus with different EP's... DId you move that around to see...
Well, The lenses are not dirty, and I've tried several. They work fine in the etx-80 here. When I get into focus, it is not bottomed out, but close to it. It...
I bought an Edmund 6" a few years ago and I've just loved it. So, wanting "more" I just bought an RV-8. (I bought the one that Gary Hand had in MD.) It has the...
Last night I was out and I had the same problem. The cause? - dew (almost frost) had formed on my finder and eye piece. The main mirror was okay, in my case....
Hi, I'm looking for a better focuser for the RV-6. If anybody has something to sell, I may be interested. Recommendations are welcome too. Has anybody tried a...
I built a 2 inch helical for mine from 35mm camera lens parts. Hardest part is making the mounting plate, I used a square of large diameter PVC, and a PVC...
Dan, what is wrong with the focuser? The only thing I can't fix is the inability to use 2" eyepieces. Mail it to me with a $25 and I'll rebuild it and mail...
The only thing wrong as far as I can tell is that is has a "hard spot". Maybe I should leave well enough alone? Just been thinking about getting something with...
The shaft of the focusing knob is bent a little. I have the same problem.... I've worked it a little.. seems to have helped. Look in the pics folder ...
That hard spot can be removed. While the Criterion focuser is not the best available, it is quite adequate for 1.25" eyepieces, and it is part of the RV-6...
One of the best things I ever did for my own RV-6 was to install the Orion "AccuFocus" gizmo onto my stock Criterion focuser. While I did have to do a very...
It's about 5:50 a.m. Monday right now as I check my e-mail and get ready for work (I'm a tech writer for a heavy equipment manufacturer in the Peachtree City...
... The focuser on my RV-6 wasn't working so I replaced it with a "Reverse Crayford" focuser from http://www.jimsmobile.com/buy_rcf.htm I went with the 1.25"...
Sorry, the pix will have to be Tuesday night. Too much to do. Work is 53 miles (over an hour away) from home, so I got home well after 6, had supper, attended...
Problems? I'll say...you could take better pictures with a cell phone camera. And 5,000? LOL! Still, interesting, and he might be able to be worked down to a...
I set up about 4:30pm to have everything ready for when the "Neighbors" came over. About 10 showed up at 7:30 along with half a dozen kids (all girls-imagine...
Dan, It's Tuesday night, so I finally got around to posting two pix of my RV-6 with the Orion AccuFocusser setup on the Criterion Dynascope site. After going...
