Contains: NGC 281
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NGC 281 - Pacman Nebula - Third Light ASI 1600 MM Pro Testing

Technical card

Resolution: 4384x3350

Dates: Nov. 10, 2017

Baader Planetarium L 31mm: 100x30" (gain: 75.00) -20C bin 1x1
Baader Planetarium RGB 31mm: 91x60" (gain: 75.00) -20C bin 1x1

Integration: 2.4 hours

Darks: ~25

Flats: ~50

Bias: ~100

Avg. Moon age: 21.75 days

Avg. Moon phase: 54.18%

Bortle Dark-Sky Scale: 4.00

Temperature: 5.50 job: 1807701

RA center: 13.186 degrees

DEC center: 56.629 degrees

Pixel scale: 1.298 arcsec/pixel

Orientation: 4.579 degrees

Field radius: 0.995 degrees

Locations: Home, Odenthal, Deutschland, Germany


Used the gaps between the clouds tonight to continue testing my ASI. Still a lot to learn and also the correct spacer for the GPU is still on its way. Still have to get used to these ridiculous short subs.... with my sky 30 seconds is the limit for LUM with gain 75 ... I suppose I need to by some more hard discs ;)

Anyway, here is the lum channel quickly edited to see some results. RGB will follow tomorrow ;)



Frank Schmitz



Added RGB Data


Bit more stretch in the nebula, less noise. Amazing what it is in this short exposed data


Played around with more Astronomy Tools Action after seeing Trevors Astrobackyard videos. This includes: More fuzzy less crunchy, enhance dso and smart sharpen

Sky plot

Sky plot


NGC 281 - Pacman Nebula - Third Light ASI 1600 MM Pro Testing, Frank Schmitz

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