Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  NGC 7822
Close up of NGC7822 in HSORGB (65 hours), Alex Varakin
Close up of NGC7822 in HSORGB (65 hours)
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Close up of NGC7822 in HSORGB (65 hours)

Close up of NGC7822 in HSORGB (65 hours), Alex Varakin
Close up of NGC7822 in HSORGB (65 hours)
Powered byPixInsight

Close up of NGC7822 in HSORGB (65 hours)

Equipment

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Description

This is a close up of NGC7822 in HSORGB.
It was taken with two rigs, running in parallel:
CGE-8RC-ASI294MM for RGBS
G11-10RC-SBIG 8300MM for HO
Stars were removed from SHO channels in linear stage using StarExterminator.
RGB stars were multiplied by Ha signal in PixelMath to combine sharper Ha stars with fuzzier colored stars.
Finally, the stars were implanted into starless SHO image using PixelMath expression:  ~(~Stars * ~$SHO)
Processing of OIII was challenging: OIII signal on this target is fairly dim so light pollution was interfering with it despite 3nm filter.

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Close up of NGC7822 in HSORGB (65 hours), Alex Varakin