new icn messageflickr-free-ic3d pan white
Pacman Nebula NGC 281 | by wissam Ayoub
Back to photostream

Pacman Nebula NGC 281

Pacman Nebula NGC 281

NGC 281 is an emission nebula located in the constellation Cassiopeia, informally known as the Pacman Nebula due to its striking resemblance to a popular video game protagonist. It spans 48 light years across and contains several Bok globules, as well as a small, open star cluster (IC 1590). Dark lanes of dust cutting into bright clouds of gas create the trademark “mouth” shape that gives the nebula its nickname.

NGC 281 was first identified in 1883 by American astronomer and astrophotographer E.E. Barnard. Barnard, best known for his discovery of Barnard’s Star3 in 1916, noted NGC 281 as, “a large faint nebula, very diffuse,” upon discovering it.



Tech Card:

Imaging telescope: Explore Scientific 127mm ED TRIPLET APO.

Imaging camera: ZWO ASI294MM-Pro.

Mount: iOptron CEM60.

Guiding camera: ZWO ASI290MM mini.

Focal reducer: Explore Scientific 0.7 Reducer/Flattener.

Software: Adobe Photoshop CC · Topaz Denoise Topaz · PixInsight 1.8.8 Ripley.

Accessory: ZWO EAF Electronic Auto Focuser · ZWO ASIAIR Pro · ZWO OAG · ZWO 8x 1.25" Filter Wheel (EFW).


Chroma 3nm Ha: 10x600" (gain: 200.00) -20C bin 1x1

Chroma 3nm OIII: 10x600" (gain: 200.00) -20C bin 1x1

Chroma 3nm SII: 10x600" (gain: 200.00) -20C bin 1x1

Total integration: 5.0 hours.

Darks: ~50

Flats: ~30

Flat darks: ~30

Avg. Moon age: 27.63 days.

Avg. Moon phase: 4.37%

Bortle Dark-Sky Scale: 4.00.

Temperature: 18.00.

RA center: 0h 52' 52"

DEC center: +56° 37' 40"

Pixel scale: 0.706 arcsec/pixel.

Orientation: 56.665 degrees.

Field radius: 0.486 degrees.

Imaging dates: Dec. 12, 2020, Dec. 13, 2020.

Imaging location: Abu Dhabi desert, United Arab Emirates.


2 faves
Uploaded on December 14, 2020