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IC 1795 The Fishhead Nebula | by wissam Ayoub
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IC 1795 The Fishhead Nebula

IC 1795 The Fishhead Nebula

This colorful cosmic portrait features glowing gas and obscuring dust clouds in IC 1795, a star forming region in the northern constellation Cassiopeia. The nebula's colors were created by adopting the Hubble color palette for mapping narrow emission from oxygen, hydrogen, and sulfur atoms to blue, green and red colors using narrowband filters. Not far on the sky from the famous Double Star Cluster in Perseus, IC 1795 is itself located next to IC 1805, the Heart Nebula, as part of a complex of star forming regions that lie at the edge of a large molecular cloud. Located just over 6,000 light-years away, the larger star forming complex sprawls along the Perseus spiral arm of our Milky Way Galaxy. At that distance, this picture would span about 70 light-years.


Tech card:

Imaging telescope: Explore Scientific 127mm ED TRIPLET APO.

Imaging camera: ZWO ASI1600MM Pro-Cool.

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 · DeepSky Stacker (DSS) Deepskystacker 3.3.6.

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


Astronomik Ha 1,25" 12 nm: 20x180" (gain: 139.00) -10C bin 1x1

Astronomik OIII 1.25" 12nm: 20x180" (gain: 139.00) -10C bin 1x1

Astronomik SII 1.25" 12 nm: 20x180" (gain: 139.00) -10C bin 1x1

Integration: 3.0 hours.

Darks: ~20.

Flats: ~30.

Bias: ~30.

Avg. Moon age: 25.37 days.

Avg. Moon phase: 18.33%

Bortle Dark-Sky Scale: 4.00.

RA center: 2h 27' 34"

DEC center: +61° 58' 48"

Pixel scale: 1.170 arcsec/pixel.

Orientation: 88.489 degrees.

Field radius: 0.620 degrees.

Imaging date: Oct. 24, 2019.

Imaging location: Abu Dhabi desert, United Arab Emirates.


A re-process of my data of 24 Oct. 2019.


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Uploaded on December 17, 2020