Quote:
Originally Posted by dugnsuz
1. Is a flattener needed when using a CCD sensor size smaller than a DSLR?
Or, is the coma inherent in the imaging train and thus needed for any camera system?
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It depends on the chip size - all refractors will have some coma so the bigger the chip the more likely it is you will hit this problem.
Quote:
Originally Posted by dugnsuz
2. Can 2" filters be screwed into any CCD camera nosepiece? (ie LRGB and NB filter imaging done without a FW)
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Yes - but you are never going do this - it will be too painful - repeatedly removing and repacing the camera to change filters will mean pulling all- nighters and at each change you will have to re-frame, re-focus etc. The only way this makes sense is to do it at the meridian flip - possibly use Ha and Oiii only - this will be okish and gets you started.
Quote:
Originally Posted by dugnsuz
3. How does one attach a flattener to a CCD camera - WO PFlat 2 for example?
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I have the Flat2 - it is designed for DSLRs and fits inot a T-ring thus you need T thread on your camera (or an adapter) and you may need a spacer to keep the FR/CCD distance correct (55mm in this case)
Quote:
Originally Posted by dugnsuz
4. How easy it is to attach a Canon EF lens to a CCD camera - is it worth it in terms of resolution?
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Not sure - I use older (but good quality) M42 (T thread) lenses that can be picked up quite cheaply from ebay for this kind of project. The only thing to watch out for is that you can manually set appature (you will want to stop down) and reach infinity focus - not all lenses let you do that.
Quote:
Originally Posted by dugnsuz
5. Can a filter wheel be introduced between Canon EF lens and CCD?
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Almost certainly not - you will probably not be able to focus to infinity.