IC 1795

Posted by on Feb 26, 2016

IC 1795

IC 1795 / NGC 896 is an emission nebula in the constellation Cassiopeia.  A star forming region, the intense red color comes from hydrogen photon emissions.  Also visible in this nebula are dark lanes of obscuring dust.  The nebula is approximately 6000 light years distant. The brighter region of the nebula is also labeled NGC 896.

This was a test with Ha and SII filters to see the impact of the full moon made in February 2016. The star colors are not corrected. Very much noise in the SII channel due to the moon.

Raw images:
Ha(3nm): 2x20 + 1x30min  (Tot: 70 min) Bin:2x2
Seeing: 3-4"

Equipment used:
ASA N12 Astrograph F/2.7
3" Wynne Reducer Corrector 0.73x
Atik 490 EX camera @-20C
No guiding

Astrodon Ha 3nm
Astrodon SII 5nm

Valla Observatory (FROSON, Sweden)
Feb 20, 2016

Image processing:
Images calibrated and processed in AstroPix
Calibration by applying Flat-Field
Registration with the AstroPix registration tool.
Color image with Photoshop CC.

Image palette:
Red - Ha, Blue - SII and synthetic green 0.8Ha+0.2SII

 Image information:
Scale: 0.92 arcsec/pix
FOW: 52x42 arcmin

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