Pacman Nebula – NGC 281

Posted by on Oct 29, 2015

Pacman Nebula – NGC 281

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.

This image was made under drifting clouds, the OIII data was noisy and no time for SII data due to more clouds. Despite this fact and nice image thanks to  the Ha data. Star colors are not correct.

Raw images:
Ha: 3 x 5min  (Tot: 15 min) Bin:2x2
OIII: 3 x 5min  (Tot: 15 min) Bin:3x3
Seeing: 3-4"

Equipment used:
ASA N12 Astrograph F/3.6
3" Wynne Corrector 0.95x
Atik 490 EX camera @-20C
No guiding

Astrodon Ha 3nm, OIII 5nm, SII 5nm

Valla Observatory (FROSON, Sweden)
October 24, 2015

Image processing:
Basic images calibration and processed in AstroPix
Calibration by applying Flat-Field only
Registration curves and levels in AstroPix
LRGB color image with AstroPix

Image palette:
RGB palette: Ha-Red, OIII-Green, OIII-Blue and Ha used as Lum

 Image information:
Scale: 0.70 arcsec/pix
FOW: 52x42 arcmin

Post a Reply

Your email address will not be published. Required fields are marked *