Return to the Cloudy Nights Telescope Reviews home pageAstronomics discounts for Cloudy Nights members
· Get a Cloudy Nights T-Shirt · Submit a Review / Article

Click here if you are having trouble logging into the forums

Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu… uh, User

Equipment Discussions >> Electronically Assisted Astronomy

Pages: 1
James Cunningham
Post Laureate

Reged: 08/07/10

Loc: Maryland
Video train not aligned?
      #5845037 - 05/07/13 07:44 AM

I have a Mallincam that I also use with a filter wheel. I had to cut down the filter wheel so that the camera did not hit the base of my mount. I am afraid that I did not make a straight cut and the camera is slightly mis-aligned with the scope. What kind of problems can this cause? Any effect on alignments? What about the images? Thanks.

Post Extras: Print Post   Remind Me!   Notify Moderator  

Reged: 07/06/07

Re: Video train not aligned? new [Re: James Cunningham]
      #5845101 - 05/07/13 08:35 AM

Depends on how bad it is. It will be no mystery if you have this problem: stars on one side of the frame will be out of focus.

Post Extras: Print Post   Remind Me!   Notify Moderator  

Reged: 06/18/08

Loc: Ottawa, Ontario, Canada
Re: Video train not aligned? new [Re: rmollise]
      #5845604 - 05/07/13 01:26 PM

As Rod notes, the primary problem is a tilted focal surface, which results in a systematic variation in focus across the frame.

Post Extras: Print Post   Remind Me!   Notify Moderator  
Dragon Man
Carpal Tunnel

Reged: 03/07/06

Loc: Snake Valley, Australia
Re: Video train not aligned? new [Re: GlennLeDrew]
      #5847599 - 05/08/13 11:40 AM

G'day Jim,
you'll soon know.

I had my MCX a tiny fraction out of square and the stars were out of focus on the left side.
When I focussed the blurry stars, the stars that were in focus were then out of focus

Mine was caused by the focuser eyepiece locking screw sitting wrong and allowed the cameras nose-piece to sit in the focuser slightly off square.
I fixed this by using a small piece of electrical insulation tape on the opposite side of the lock screw.

But yeah, even a small amount off square and you can see a bit of a difference in focus across the image.

Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1

Extra information
7 registered and 16 anonymous users are browsing this forum.

Moderator:  droid, David Pavlich, JayinUT 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Thread views: 273

Jump to

CN Forums Home

Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics