Hi everyone,
To lessen the load on my EQ6, I have decided to go down the path of an off axis guider in lieu of using the ED80 as a guidescope. As there have been a lot of favourable reports on the TS 9mm OAG, I have now purchased one along with all the necessary adapters to use it with my Hotech flattener and QHY8L camera.
Last night, I had it all assembled and ready to go. Following on from the suggested method from TS in Germany, I have it configured in the following manner (with the correct spacing between flattener and camera)......
Focuser - Flattener - Spacer - OAG - CCD
I am utilising my DMK21 as the guide camera, which I have been using with my ED80 guidescope until now. However, the issue is that I do not have enough inward focus using the OAG. As a trial, I placed the OAG ahead of the spacers to eliminate some of the distance, and in addition, removed the 1.25" nose piece on the DMK to further reduce the distance, but I was only able to focus the OAG by fully retracting the focuser on the scope, hence now unable to focus the CCD imaging camera.
The TS website suggests that they have tested their OAG and recommend the following guide cameras.....
- Lodestar
- Moravian GO-0300
Would sourcing an alternative guide camera give a variable result??? I cannot find the 'official' back focus for a DMK21, whereas for a Lodestar, the quoted figure is 13mm.
Looking for some feedback if anyone could assist me in solving my little problem.
Thanks,
Daniel