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NGC281 Pacman Nebula in SHO

Category:Deep Sky
Published:
462
NGC281 Pacman Nebula in SHOIC 11NGC 281IC 1590
Resolution:
1939x3318 px
File size:
6711 KB

Photo description / processing

Another processing option. Less red.

Technical information

Telescope/Lens
Askar FRA300 Pro
Camera
ZWO ASI678MM
Mount
ZWO AM3
Guide Scope
ZWO APO 30mm F/5
Guide Camera
ZWO ASI120 Mini
Accessories
ToupTek SHO Filter Set 6.5nm 1.25-inch
Software
ASIAIR, Siril, GraXpert
Location
НОВОСИБИРСК, Россия

Light pollution

Orange, Bortle 6 zone

Date taken

Exposure

Photo versions

NGC281 Pacman Nebula in SHO
NGC281 Pacman Nebula in SHO

Oct 12th, 2025

20 h 5 m

Another processing option. I added an L channel to the stars. I cut out the stars using Starnet but combined them with SHO using pixel math. I worked with the nebula's histogram, reduced blue, added red.

NGC281 Pacman Nebula in SHO and RGB
NGC281 Pacman Nebula in SHO and RGB

Oct 12th, 2025

19 h 45 m

The nebula is assembled from SHO. Stars are substituted from RGB. It is visible that in RGB the stars are smaller and have more realistic colors, but after combining, halos appeared around the stars. Two images are provided - with the original stars from SHO and the substituted ones from RGB. During imaging, a gain of 0 was used for maximum dynamic range so that the stars would not be overexposed. This turned out to be valid for all channels (small pixel of the planetary camera).

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