Cave Nebula

Cave Nebula, also known as Sh2-155 or Caldwell 9 is a huge emission nebula located in the constellation of Cepheus. The Cave itself is the dark arcuate object in the center surrounded by the red emission nebula. It has about 14 light years in diameter and is part of a much bigger cloud of gas and dust, which lies at a distance of 2740 light years.

 

I captured this image in September through a borrowed telescope Vixen 81S with my modified camera Canon EOS 1300D. It is my first attempt at taking emission nebulae through the telescope, not a lens, and I am pretty happy with it. There is much more detail than it would be through the common lens.

 

Canon EOS 1300D (modified), SVBony CLS filter

Vixen 81S, EQ-5 mount

 

EXIF: 48x120sec (1 hour 36 minutes in total), ISO 6400

Darks, flats, biases

 

Processed in DSS, Siril, StarNet++ and Photoshop

15/09/2023, Mašov, Czech Republic (Bortle 5)

Done