Caldwell 4 - Iris Nebula

 Posted: Sep 19th, 2026
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NGC
IC
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Technical Info
Telescope/Lens: ZWO SeeStar S50
Camera: Sony IMX462 (Seestar S50)
Mount: Штатив
Software: Siril, GraXpert, GIMP, CosmicClarity
Exposure:
1800 x 20" ISO/Gain: 80 - IRCUT
Green, Bortle 4 zone:
 Rusilovo, Russia
 Sep 17th, 2026
10 h 0 m
12
Resolution: 2001x3650 px
Scale: 6911 KB

The Iris Nebula (also known as NGC 7023 and Caldwell 4) is a bright reflection nebula in the constellation Cepheus.

Seestar S50 - EQ-mode

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