Contains:  None
Pacman Nebula Ha+RGB, 


            Cristian Cestaro

Pacman Nebula Ha+RGB


Constellation: Cassiopeia.
Session: 02 Oct 2018.

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NGC 281 is an H II region in the constellation of Cassiopeia and part of the Perseus Spiral Arm. It includes the open cluster IC 1590, the multiple star HD 5005, and several Bok globules. Colloquially, NGC 281 is also known as the Pacman Nebula for its resemblance to the video game character.

The nebula was discovered in August 1883 by E. E. Barnard, who described it as "a large faint nebula, very diffuse." The multiple star HD 5005, also called β 1 {\displaystyle \beta 1} {\displaystyle \beta 1}, was discovered by S. W. Burnham. It consists of an 8th-magnitude primary with four companions at distances between 1.4 and 15.7 seconds of arc. There has been no appreciable change in this quintuple system since the first measurements were made in 1875.

Source: Wikipedia

• Optics: Primalucelab 80/500 APO (doublet).
• Mount: Skywatcher N-EQ6 Pro.
• Filters: Astronomik Ha (12 nm) RGB (36mm).
• Accessories: QHYCCD QHYCFW-2-M motorized filter wheel, Primalucelab field flattener 2", Primalucelab Sesto .
• Camera: QHY163M mono.

Ha: 46x120s | binning 1x1 | Gain 120 | Offset 80 |
cooled - 20°c.

Red: 15x60s | binning 1x1 | Gain 60 | Offset 30 |
cooled - 20°c.

Green: 15x60s | binning 1x1 | Gain 60 | Offset 30 |
cooled - 20°c.

Blue: 15x60s | binning 1x1 | Gain 60 | Offset 30 |
cooled - 20°c.

Integration: 2,28 hours.
Correction: Darks, Flats, Bias.

Notes: Mapped Ha (as luminance) + RGB (false colors), little clouds, cropped.

Pixinsight, Adobe Photoshop.

© www.infinitalavita.comCristian Cestaro.



Cristian Cestaro


Pacman Nebula Ha+RGB, 


            Cristian Cestaro

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