Re: NB Imaging With Mach2

Marcelo Figueroa

I don't know at that focal length, but shorter distances (Esprit 100) my Mach2 is quite capable of 10 or 15 minute exposures without guiding. I haven't tried longer exposures, but I think for times longer than 30 minutes, some sort of guiding is probably a good idea.
Personally I prefer shorter exposures, about 5 minutes, because if a frame is lost due to a satellite or other inconvenience I also lose a good part of the night. In this case, about 5 minutes, going unguided works great.

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