Celestial hemisphere:  Northern  ·  Constellation: Perseus (Per)  ·  Contains:  NGC 1245
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NGC 1245 achro refractor Bortle 9, CHERUBINO
NGC 1245 achro refractor Bortle 9
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NGC 1245 achro refractor Bortle 9

Getting plate-solving status, please wait...
NGC 1245 achro refractor Bortle 9, CHERUBINO
NGC 1245 achro refractor Bortle 9
Powered byPixInsight

NGC 1245 achro refractor Bortle 9

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Description

NGC 1245 achro refractor Bortle 9

This is one of the first test using an achro refractor (Bresser 127L: 127mm f 1200) with a "G" filter (from RGB set) and a mono camera from a Bortle 9 sky.
The idea about the G filter (490-590 nm. more or less) is given by the oppurtunity to avoid chromatic aberration and maintain small stars images (Achro refratcors are bad in BLU and RED part of the visible spectrum).
Shrot exposure (60 sec) and low gain (100 in a scale from 0 to 600) with an old ASI 1600 mm camera cooled
sensor tempòerature -10°C.
LIVE STACKING acquisition. Very soft post processing.

www.dark-star.it

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NGC 1245 achro refractor Bortle 9, CHERUBINO