[pmrid (Peter)]

The AstroPhysics CCD Telecompressor image is now loaded (see below).
The difference is pretty dramatic I think - to the point where I am willing to say the problem is solved.


Well, it's been a bit of a rocky road of discovery but I believe I have come as close as any available products will allow to getting a coma-free imaging plane at F6.3 or so for my EdgeHD 1400.
As other Edge users will know only too well, Celestron has yet to produce a reducer that allows us to image at anything but F11 or with a HyperStar.
A product made by Optec called a Lepus .62 is being sold by OPT and others as being suitable for EdgeHD optics.
I put one to the test along with a prototype of a new design for the same product. And I have now had a chance to test an AstroPhysics CCD Telecompressor (CCDT67).
As part of that test process, I also ran some images with the EdgeHD at a native F11 to be sure that there was no 'native' coma present.
I attach 3 images for now and will add a fourth later tonight or tomorrow.
The three are:
1. The EdgeHD 1400 at a native F11 of NGC3372
2. The Lepus1 device test;
3. The Lepus 2 device test.
The fourth will be the result of the test that I have runing now of the AstroPhycics APT67 Telecompressor.

Peter