NGC7606 (Gianlorenzo)

Celestial hemisphere: Southern · Constellation: Aquarius (Aqr) · Contains: NGC 7606

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NGC7606

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NGC7606

spent a few nights collecting frames for this one, as always fighting with the imperfect Alt/Az tracking of the mount.
Then there is the registration challenge due to the very few stars visible in each frame (shots are taken at 5" each to avoid trailing). So each set (night) is registered and stacked independently using Siril's 1-2-3 star align in two passes: the first using 1 star only, the second on the pre-aligned set with two stars compensates for field rotation (AltAz again...).
Finally all 7 stacked subsets are registered and stacked again.
Despite the large number of shots the outcome was so-so, so I decided to filter it with GIMP's Desaturate filter. I think the result is interesting. The framing serves as a testimony of the challenges associated to these mounts...

Final
Original
B

B

Description: this is the "original" before desaturation filter and with some stronger histogram stretch

Uploaded: ...

Low-Cost Astrophotography

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Status	Basic success
Started	...
Astrometry.net job	8917196
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC7606

NGC7606

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NGC7606

NGC7606

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