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NGC 6543

NGC 6543 is a high northern declination deep-sky object. It has the combined magnitude of 8.1, with high surface brightness. Its small bright inner nebula subtends an average of 16.1 arcsec, with the outer prominent condensations about 25 arcsec. Deep images reveal an extended halo about 300 arcsec or 5 arcmin across, that was once ejected by the central progenitor star during its red giant phase. Below you can see a 200% zoomed in version
Description Sources: Wikipedia, theskylive.com, in-the-sky.org

Imaging telescope: TS Photon 8" F5 Newtonian reflector
Imaging camera: ZWO ASI 715MC
Mount: Skywatcher HEQ-5 Pro Go-To
Guiding telescope: TS 80/600 F7.5 Achromat
Guiding camera: ZWO ASI 120MC-S
Coma corrector: TS GPU Superflat
Extras: ZWO EAF 5V Motor Focuser

Software: Adobe Photoshop 2020, DeepSkyStacker, PHD Guiding, PixInsight
Frames: 5s x 500 Gain 150
Integration: ~41 minutes
Date captured: 27/08/2025
Location: Athens, Greece
Bortle Scale (?): 8