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Can anyone in Australia re-align the optics of an SCT? If not I may have to do the best with how it is.
I haven't noticed the chromatic effect on stars before. This image was taken before the corrector was removed and the secondary was cleaned.
I have checked a few previous images - images I have taken without the reducer do not have this chromatic effect - so I think it may have something to do with the corrector or imaging train.
I don't think the position of the corrector would be out by more than a fraction of a mm - I am a bit skeptical whether it would have been that precise to start with?
Tony.
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