NGC 4490

Posted: Mar 18th, 2025

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NGC

IC

HD

Technical Info

Telescope/Lens: Sky-Watcher 25012

Camera: ZWO ASI294MM Pro

Mount: MT-90M

Software: DSS, FITStacker14c, PS

Accessories: CC SkyWatcher f4, zwo efw, optolong LRGBHO

Exposure:

228 x 60" ISO/Gain: 120 - L bin2

40 x 60" ISO/Gain: 120 - R bin2

40 x 60" ISO/Gain: 120 - G bin2

40 x 60" ISO/Gain: 120 - B bin2

18 x 60" ISO/Gain: 120 - H bin2

17 x 60" ISO/Gain: 120 - O bin2

Yellow, Bortle 5 zone:

Krasnoyarsk, Russia

Mar 15th, 2025

6 h 23 m

886

12

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Resolution: 3494x2294 px

Scale: 4513 KB

Evgeniy Osharov

130

Moon 94%, atmosphere very soapy. Did not use a guide, with such atmosphere there was no point, the mount guided itself. Lowered the oxygen contribution, otherwise hydrogen was heavily whitened, galaxies after collision, very active.

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