Pacman Nebula NGC 281 · 2020-10-30

The Pacman Nebula NGC 281 is a bright emission nebula and part of an H II region in the northern constellation of Cassiopeia and is part of the Milky Way's Perseus Spiral Arm about 9200 ly away.

The Pacman Nebula NGC 281 is a bright emission nebula and part of an H II region in the northern constellation of Cassiopeia and is part of the Milky Way's Perseus Spiral Arm about 9200 ly away. Edward Emerson Barnard discovered the nebula in August 1883, describing it as "a large faint nebula, very diffuse.

A total of 4 hours and 40 minutes exposure.

Exposure	14@1200 sec
ISO	1600
Camera	Nikon Z7 [8856 x 5504]
Optics	Skywatcher Esprit 120mm Refractor
Filter	Radian Triad Ultra Quad-Band Narrowband Filter
Guiding	Phd2 using a ZWO 224MC on an Orion 60x240mm Guide scope
Controller	Images taken using Kstars on an Odroid-N2 (Raspberry Pi clone)
Field of View	2.08 x 1.37 deg
Location	Lower Sackville, Nova Scotia.
Date	2020-10-30
PixInsight Processing	WeightedBatchPreprocessing Script NoiseXTerminator Dynamic Crop Automatic Background Extractor ColourCalibration (both saturation and hue) MultiscaleLinearTransform HistogramTransform CurvesTransformation