British Astronomical Association

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10″ Altair RC

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5 January 2018 at 8:42 pm #578930
Grant Privett
Participant

I’ve used a 10″ Altair RC quite a bit and found that once I got the tension in the focuser sorted out, focus seems to say pretty tight for several hours. We had a couple of instances where it changed abruptly during the night, but that was some time ago now and seemed to occur only with a heavy CCD.