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
Resolution: 3494x2294 px
Scale: 4513 KB
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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