I have a 21 year old Coulter 13.1" Blue Tube Dob that I cannot collimate. I will advise what I have done to collimate it and desciribe the problem and would...
I'm not sure what your criterion is for the secondary being in alignment. If it is centered in the tube and beneath the focuser, and the focuser is square...
Larry, I'm interested in getting this type of collimation to use for myself. I just blew my wad on a 10" Orion Dob and may need to get this cheaper method to...
I see colors don't seem to work as expected.... nor can i seem to edit my existing messages in yahoo. Anyway Larry it was the second half of the paragraph...
It's kind of a poor man's cheshire eyepiece. Some make a sight tube, with a small hole at the top (eye end), and a cross hair at the bottom. I use just a ...
Here's a variation on the method: http://astro.gpsrevs.urlq.net/collimation.htm ... __________________________________ Discover Yahoo! Get on-the-go sports...
Wayne, I thank you for the advice which I will take advantage of. Looks like my mistake was, as you mentioned, nit tilting the secondary so that the laser...
Wally, A few thoughts. First, I have seen people make a target with a precisely centered hole in it that fits over or inside the end of the draw tube so you...
... From: NewtonianReflector@yahoogroups.com [mailto:NewtonianReflector@yahoogroups.com] On Behalf Of Phil Pasteur Sent: Friday, June 03, 2005 8:53 AM To:...
Phil, Thank you. I shall try the technique mentioned that I must confess that I had heard about. I have used a Cheshire before and was hyped into buying a...
Wayne, I now understand where I made my mistake. I carefully centered the secondary mirror then using a laser, noticed that the beam was a bout 2" from the...
Wally, To expand a bit on what I said: I have only been back into Astronomy for about three years after being out of it for over 30 years. Bottom line is, not...
Phil, I bought an Orion Sky Pro 8 two years ago and had no problem at all collimating it with the supplied collimation cap. I have a laser and soon found that...
... From: NewtonianReflector@yahoogroups.com [mailto:NewtonianReflector@yahoogroups.com]On Behalf Of Wally Lucas Sent: Friday, June 03, 2005 10:04 AM To:...
Wayne, Thanks for all the tips and insights. I own and use a no. of good refractors and a Nexstar 11 as well as a superb Orion Sky Pro 8. I have been at this...
Thanks for the info below and yes work was hectic I forgot to get a film canister from work... I must be getting old,. no. I always forget things. I think. ...
I brought a laser collimator with my scope when I got it. Thinking this would be the best way of doing things. I hardly _ever_ use it for the reason stated...
Using the collimation cap from my Orion Sky Pro 8, I have found it to be a most useful tool to collimate with. Turns out it is an autocollimator that reflects...
... tool to collimate with. Turns out it is an autocollimator that reflects your iris to the primary mirror. You adjust the primary mirror screws to center...
Vic, Thanks for straightening me out. As I have to APOs I can tell when the SP8 is well collimated when I view stars & planets. I find that when I use the...
... collimated when I view stars & planets. I find that when I use the cap so that the dot is in the center of the ring that it is spot on collimated. I have...
Wally, I brought mine because I worked with lasers for a few years and know the accuracy of a laser beam. and in the end this is really it's down fall, unless...
... Rob is absolutely correct (if you're using a simple point source laser.) The laser itself must be properly collimated, and the "registration"--the way the...
Wayne ... This is a common fault with cheap diode pumped lasers. We used to have the same problem even with the more expensive 100mW-1W lasers and would often...
Vic, ... Yes I very much am comparing, but not in the way you seemed to have interpreted. I'm Comparing the fact that my eyeball doesn't have to rely on so...
Wayne, Thanks again for the info. Most feel that a laser is required to collimate a fast reflector, but it would apperar that it is not true. Wally ... From:...
Vic, The SP8 works well on the planets at up to 200x. I find it best to keep the planet in the center of the field. As I have a 6" APO, there have been...
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