Sh2 155 "Cave" Nebula

Image Description and Details :

Sh2-155 or Sharpless 155 is a diffuse nebula in the constellation Cepheus, within a larger nebula complex containing emission, reflection, and dark nebulosity. Images showing a curved arc of emission nebulosity corresponding to a cave mouth (roughly center of image) gives rise to the popular moniker "Cave Nebula". Sh2-155 is an ionized H II region with ongoing star formation activity, at an estimated distance of 2400 light-years from Earth.

Capture info:

Location: Orion’s Belt Remote Observatory, Mayhill NM, USA

Telescope: Takahashi 180ED reflector

Mount: Paramount MX+

Camera: SBIG STXL 16200

Data: 4.75,4.25,4,4.75,4.5 hours LRGB , Ha respectively

Processing: Pixinsight

Copyright: David Doctor