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Here is the camera assembly on the reducer. From the reducer up: 72 mm to 57 borg adapter, 57 to T2 borg adapter, celestron t2 dovetail plate and OAG, celestron tall t2 dovetail plate, celestron t2 6 mm spacer, ZWO filter wheel, zwo double T adapter, asi 1600. The assembly seemed to have less tilt when I had a DSLR attached to the OAG.
Next to the assembly in the image is a cheap 72 mm to t2 adapter which can replace the borg adapters to reduce the distance to the reducer by 10mm. Very hard to find. I have ordered a fixed 36mm to T2 adapter to replace the helical focuser on the OAG which will mean I can take out the celestron spacers and reduce distance further.
One of the problems with the exposure seems to be that the rgb images need much more exposure when combining in PI. They seem very dark with backgrounds of 100 or so, but that may be something I have missed in PI in fitting the dss stacks.
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