I have been taking a look around for a another scope, maybe in the six inch range, yes I know that you can pick up a chinese dob for a lot less money but the...
What do you have now? What kind of observing do you do? I have a custom 6" f/10 from Steve. It's a scaled up version of his f/8, with a brake on the...
I should know this already, but.... Is the image formed by a Newtonian telescope inverted and mirror imaged, or just inverted? Thanks in advance! Ed...
Ed, Inverted only. Since there are two mirrors, it's "mirrored" twice, resulting in no mirroring :) Although with my newtonian, the OTA can be in virtually...
Thanks Tom! I thought that was what the view was, but became confused when setting up my new scope in Sky Tools 2. The Help file says "For instance, a...
I'm thinking about converting my 6" f/5 Newtonian EQ to a DOB design. Seems that for zipping around the sky looking at Stellar objects would be easier done...
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...
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