Quote:
Originally Posted by Terry B
The halo is probably because you are using a refractor. The IR is not corrected like the visible light. This is why older SLR lenses had a IR focus adjustment when you use IR film. I would think that if you use a reflector that focuses all wavelengths at the same spot the IR halo should disappear. I have tried this with my VC200L. I put a near IR filter in and took pics with my CCD and the focus is the same as visible light.
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Interesting.
But the halo's are in the pics without the IR filter.
I won't be able to use my 12" reflector for a while yet as I have to make the whole thing more lightweight. There is no way I'm putting it on my EQ6 at the weight it's at now. Yeah, I know, others do, but I can't afford to repair a strained mount.
So I'll just keep plodding along with the set-up I'm using now. I'm having fun and that's the main thing
