M101 Pinwheel

 Posted: Mar 26th, 2020
Technical Info
Telescope/Lens: Sky-Watcher BKP2001
Camera: фуджи Х-Т20
Mount: МТ-3S
Guide Scope: -
Guide Camera: -
Software: Fast Sone Image Viewer 7.4
Accessories: -
Exposure:
1 x 30" ISO/Gain: 25600
Black zoneLight Pollution:
 Altays Harlovo, Russia
1 m
1618
test
Resolution: 1920x1280 px
Scale: 689 KB
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Comments

Remove the noise
26 Mar, 2020 Reply
Noise removed, you're right—it's a test shot. I focused using the camera's monitor, and I'm not very good with Photoshop either. I still have nostalgia for the film era, so I shoot single frames. The critique is instructive, I'll take it into account.
27 Mar, 2020 Reply
Imsare Replied to Igor Glazunov
To remove noise, you don't need any special knowledge. Just give it a try and post your results right here, especially for color noise.
28 Mar, 2020 Reply
Without knowledge of astrophotography techniques, the result is a dead end—colorful noise. This outcome comes from long exposure times, simulating "Velvia" film/bright and high ISO 25600. The solution: a cooled sensor + guided mount + fast lenses + post-processing + a proper astrophotography location!
29 Mar, 2020 Reply

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