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Old 07-11-2020, 12:03 PM
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Robert_T
aiming for 2nd Halley's

Robert_T is offline
 
Join Date: Oct 2005
Location: Australia
Posts: 2,959
First light new scope Askar FRA400 (72mm) F5.6 on Lagoon and Orion

Trying out my new Askar FRA400 F5.6 apo refractor - it's a Petzval-like quintuplet which means you don't need an extra flattener and no need for specific back focus which is great. I have a0.7x reducer for it that then required 55mm back-focus but haven't use it yet other than quick test, so these are native 400mm focal length.

Enjoying the width of field possible here with the ASI071MC... just need some more sky time to build up some images in depth.

m42 is a mix of exposures 90, 60 and 30s amounting to 1hr 49m
lagoon triffid is 2hr 26min of 2min exposures
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