NGC7023_Iris_Nebula_Cepheus_V2_4K_ReSample

First image for the new season of astro dark here in Scotland, 4 hours of unfiltered OSC data from my back garden in bortle 4 skies, there was a moon but as this target was at 70+ deg elevation the moon did not interfere in any way. The subs were integrated with AstroPixelProcessor and processed in Pixinsight.

The Iris Nebula (also known as NGC 7023 and Caldwell 4) is a faint reflection nebula in the constellation Cepheus. The nebula is illuminated by a bright central star designated HD 200775. It lies 1,300 light-years away and is six light-years across.

Integration : No filter : 48×300″ : 4h

 

16 Aug 2025 ,47% Moon

 

Imaging equipment

Telescope : William Optics Redcat 61

Camera : ZWO ASI2600MC Pro

Mount : ZWO AM5

Software :

Aries Productions Astro Pixel Processor (APP)

Pleiades Astrophoto PixInsight

Russell Croman Astrophotography BlurXTerminator

Russell Croman Astrophotography NoiseXTerminator

Russell Croman Astrophotography StarXTerminator

ZWO ASIAIR

Done