Posted 03 March 2013 - 10:25 AM
has anyone got a field rotator mounted to an LX200 GPS? if so, is it any good? thinking of purchasing one for deep sky image work rathger than a wedge.
Posted 03 March 2013 - 05:40 PM
1) it adds to back focus, and may be an issue
2) a wedge is much better for long exposures with a CCD. The rotator 'simulates' a polar alignment. Why simulate when you can easily get the real thing with a wedge?
Posted 04 March 2013 - 12:41 AM
i can see the advantages, but as i do not have a perminant mount, and i need to wheel my scope in and out when using, the effeort of trying to polar align each time, is a little off putting. although having said that, once done, and providing the scope is placed in the same position, it should be close each time.
Posted 04 March 2013 - 08:43 AM
I don't have a permanent setup either - I just have the alignment process memorized, and so it each time I set up.
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