Monday, September 6, 2021

Sh2-155 (cave nebula)

 



Sh2-155, informally known as the "cave nebula," is dark cloud of gas embedded in a giant emission nebula. The top edge of the cloud is illuminated by several hot, massive (OB) stars that are part of the Cepheus OB3 association. The image was generated with observations in Hydrogen alpha (red), Luminance, Red, Green, Blue filters, from a light polluted sky in Korinthos Greece.

Technical details:


Optics: Vixen ED81s @ f/5.2
Mount: Skywatcher HEQ5 Synscan Pro (belt mod)
Guiding: ST-237 guide chip of SBIG ST2000XM
Camera: SBIG ST2000XM
Filter Wheel: SBIG CFW9
Filters: Ha,L,R,G,B
CCD Temperature: 0 degrees Celsius
Constellation: Cepheus
Date: August 1-3, 2021
Location: Korinthos - Greece - Albireo Observatory 1
Exposure:
L=12x600 min bin 1x1
R=12x300 min bin 1x1
G=12x300 min bin 1x1
B=12x300 min bin 1x1
Ha=18x1200 min bin 1x1
Calibration: Darks, Flats, Bias


No comments:

Post a Comment