Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  NGC 457  ·  The star φCas
Owl Cluster: the need for good calibration and long integration times, Steve Milne
Owl Cluster: the need for good calibration and long integration times
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Owl Cluster: the need for good calibration and long integration times

Owl Cluster: the need for good calibration and long integration times, Steve Milne
Owl Cluster: the need for good calibration and long integration times
Powered byPixInsight

Owl Cluster: the need for good calibration and long integration times

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Description

This is 'first light' on a new refractor that arrived yesterday. I pointed it at one of my favourite objects and took three 5-minute subs. I don't have flats yet, so I decided not to bother with calibration of any sort. Aligned, stacked and stretched. I thought I would keep the theme going and do no other processing.

Red: 1 x 300s

Green: 1 x 300s

Blue: 1 x 300s

Total integration time: 15 minutes. Processing time: a bit less.

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Owl Cluster: the need for good calibration and long integration times, Steve Milne

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