... Neat! Meade uses a 3-spring assembly for the LX200GPS/R/ACF family of OTAs, not sure about the LX600 and LX800 OTAs. A CAD diagram of the secondary...
I frequently use Belleville washers in one of my other hobbies and they are extremely useful. I don’t mean to be negative but: The springs or washers need to...
Ken: a guess on my art, but I suspect that fiber optic will not work, since at the high mag needed for good collimation, the fiber optic end will look like a...
Does a mask have to be round? Or can it follow the arc of the corrector plate, be square or pie wedge? ... From: Dale M <lionsfan0_16@...> Subject: Re:...
It's better to be round. The results of diffraction are unpleasant when the aperture isn't round. Bud ... [Non-text portions of this message have been...
I haven’t yet tried but I’m surprised at your comment. Consider a 62.5 micron fibre (0.0000625 meter diameter) at a distance of 20 meters. Then asin(angle)...
Thanks for the link to the drawings! From: sct-user@yahoogroups.com [mailto:sct-user@yahoogroups.com] On Behalf Of thad_floryan Sent: Wednesday, May 23, 2012...
Mine is quite tight, but not like stretched Saran Wrap over a bowl of food. It does not look stretched and distorted, just a lot tighter than pictures I see of...
You are correct in that the film should NOT be stretched when making a filter. I do not believe that it was tight when I bought the C8 filter, but that sucker...
If you reflect the light source from a shiny sphere like a silver Christmas tree ornament, the apparent size of the reflection is smaller still. The diameter...
A laser collimator CAN be used in a SCT but not in the normal way. I have a Hotech cross-hair collimator. The idea is to collimate the SCT using either a...
in the 3 yrs that I owned my 11" I have only had to collimate it 3 or 4 times and it has never been WAY off just a very tiny bit, so the image was never really...
Ken, I only had the secondary out once on my C8, that was when I replaced the philips head screws with allen/sockethead screws. I could be wrong but I am quit...
Thad, Some very nice drawings. There is no way that Meade would give up into like this. I take it you drew them yourself. I've worked +19 years as a field...
I have an 8-inch Meade LX200 Classic (about 15 years old). I have not had the corrector out but I assumed that the design included springs. I could easily be...
... That's odd: I thought Conrad Maloney's name was on every CAD PDF -- he's the guy who drew them 6 six years ago -- but I see now that it's not. He used to...
breaking in a bit, sorry, but Thad, did Conrad ever tackle the mount with his analyses? especially the dec bearing and shaft assembly? off line if you like...
I was just looking at the collimation screws on my scope and noticed that there was a crack on the outside of the secondary housing. The crack is toward the...
Hi A quick review of what the design is. Your secondary housing is plastic. Collimation is achieved by "pivoting" the secondary by pulling the secondary...
I hope you are right that nothing is wrong. My scope is about two years old so its probably plastic. I was using Bob's Knobs when I set my collimation. I...
Hi I did not exactly say "nothing is wrong" but at least in my case it has not hurt the performance. I should mention that mine is an older starbrite C11 and...
