View Single Post
  #13  
Old 27-03-2019, 05:36 PM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 17,901
Quote:
Originally Posted by glend View Post
So I have a first test image that was acquired last night, you can see it here:


https://www.astrobin.com/397533/0/


the details are on the Astrobin technical page. You can click on the boxed image to go to a full screen view. As always with jpg conversions for Astrobin, some of the fine detail is lost in translation from the post-processing TIFF version.


This image is primarily a field size test for now, and I am happy with that result. I have to investigate what appears to be some tilt in the lower left corner of the image.
Quote:
Originally Posted by glend View Post
Greg, the adapter is an M63 to M48 screw type. The back of the focuser (the 2" clamp adaptor) unscrew and the camera adaptor screws directly on to the focuser tube via the M63 thread. It is a very solid assembly.

https://www.teleskop-express.de/shop...0-75-male.html

There is a focuser tube rotation lock, and i suspect that might something to check next time. It was located 180 degree opposite that corner of the camera. The Nikon 48mm adaptor also has an adjustment ring with three recessed grub screws, it is possible that this could be the culprit.
Right. The faster the scope the more sensitive it is to this sort of thing.

Greg.
Reply With Quote