NGC 281 Pacman Nebula

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.

Pacman Nebula (NGC 281)  Pacman Nebula NGC 281 in HaRGBPacman Nebula NGC 281 in HaRGB


NGC 281 The Pacman Nebula


November 9 (RGB) and 12 (Ha) 2013


Telescope: Takahashi Sky 90II with F/4.5 reducer/flattener

Camera: SBIG ST-10XME w/ CFW10 (Astrodon Gen 2 RGB and 5nm Ha Filters)

Autoguider: Orion Starshoot

Guidescope: Orion 50mm

Mount: Celestron CG-5 Mount

Exposure Info: Ha: 12 x 900 secs
R:   13 x 300 secs
G:   13 x 300 secs
B:   13 x 300 secsTotal Exposure Time: 6 Hours 15 mins


Maxim DL 5.23, Photoshop CS6, CCDSharp


I installed a Robofocus Unit on my Sky90 and also replaced the Astrodon Gen 1’s with Gen 2’s. This was also my first time running 15 min subs in Ha.

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