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NGC891 an edge-on spiral in Andromeda


fwm891

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Hi Francis

Guiding by autoguider on what mount ?

Looks nice and sharp.

Are your filters 2" or 1.25" ?

The reason I ask is that I'll be getting around to 1x1 bin shortly ...

Cheers

Mike

Thanks for the comments everyone.

Mike I'm using an SX USB Filter wheel with 36mm unmounted filters. It's a 7 position wheel so i can have LRGB and Ha, OIII and SII filters mounted together. 1.25" filters I felt were too small for the Atik's sensor.

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