I just purchased Jim Fly's collimation tools and there are instructions on the autocollimator where talks about tilt/rotation of the secondary. How does one...
... "Tilt" is the angle adjustment--the two screws that pitch the front lip of the diagonal mirror away from or closer to the focuser (not the two "forbidden"...
Hi Vic, I wish I knew what four screws you were talking about?. Are you talking about the focuser? I have a feathertouch focuser which I never have touched ...
Okay, now what 2 adjustment screws are you not suppose to mess with, and what happens if you adjust them? Jerry. ... From: starmaster_scopes@yahoogroups.com ...
Jerry, Not the focuser! From Vic's post, it sounds like you should have 4 adjustment screws on top of the Secondary holder just under the spider facing out...
... Jerry, I suggest you call Rick and have him walk you through collimation step by step in real time. It will only take a few minutes and he will tell you...
... Poor Rick--somebody buys a new collimation tool and Rick is expected to make time to explain clearly and concisely, over the phone, whatever they're seeing...
... There are two adjustment screws behind the diagonal that mimic the deflection caused by rotation. This is easy to see if you put a simple point source...
I have a couple of questions about the forbidden screws. Rick delivered my 24-inch Starmaster in January 2001, and set it up in my driveway. Not knowing any...
... with, and ... I can no longer sit on the side and wait for clarity. lol I recently purchased a used 12.5 ELT and I am in the process of gaining collimation...
Hi Greg, Okay, this is what Rick told me. This is very simple and I'm sure someone will jump in and correct if they think I have it wrong. Look at this image....
... Thanks Ginger. Your photo answered my question. I see the forbidden screws are the ones I was calling "3 o'clock and 9 o'clock." I also now see the...
... No! Those are the "forbidden" screws. The two on a horizontal line, in-line with the focuser, adjust the tilt. The two on the perpendicular (vertical) ...
... As I mentioned in an earlier post--you can still achieve precise axial collimation (focuser axis and primary mirror optical axis coincide) with a less than...
... Gerry, You can look for the screw heads that secure the diagonal holder shell to the diagonal holder mounting plate--they should all be just barely visible...
Hi all, The one thing that I don't understand, is why not just set the secondary once and tighten the stalk so that it cannot rotate? Then you can not get into...
... As I commented earlier, it's a matter of preference. As I also mentioned in an earlier post, "It's OK if you find a way that's better/easier for you." ...
I have a 12.5 SM.I have messed around with the 4 screws in the back of the diagonal.Since then I have a problem with collimation.My problem starts wth the...
How do I undo the ... Gerry, The two screws you can adjust are the one closest to the focuser and the one farthest from the focuser. I too have a recently...
Assuming your focuser is on the side, the forbidden screws are on the top and bottom. -John ... __________________________________________________ Do You...
Thanks to everyone who offered first light suggestions. I had a wonderful time using my Shorty for the first time the other night. I was with my good friend...
The folks putting on the Shingletown Star Party are seeking additional votes for the T-Shirt contest they're putting on. No, I'm not trying to stuff the...
Congratulations, Ray! Having known Ginger for quite a while, I know you got one fine telescope there!! Enjoy! Al Schlafli *********** REPLY SEPARATOR...
... A hopefully helpful hint: use "realign on obj" on database objects which you GOTO (or PUSHTO). I get much better pointing accuracy when I do that...
I agree with Dan. I do a "realign" on virtually every object just as a habit (except planets). It seems to improve the chances of the objects being in the...
... But neither of those tools will fix this problem. You need a plain old sight tube for this. -John ... __________________________________________________ ...
... Did you turn off the sidereal clock in the SC? You need to do that when using a platform, otherwise it assumes the scope is not tracking. -John ...
... screws are ... old sight tube for this. ... John, you are correct. I should have noted that I have a sight tube/Cheshire combination from Jim Fly. I did...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
