Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)
Cave Nebula (Sharpless 2-155) in Cepheus - Ha LRGB, Steve Milne
Cave Nebula (Sharpless 2-155) in Cepheus - Ha LRGB
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Cave Nebula (Sharpless 2-155) in Cepheus - Ha LRGB

Cave Nebula (Sharpless 2-155) in Cepheus - Ha LRGB, Steve Milne
Cave Nebula (Sharpless 2-155) in Cepheus - Ha LRGB
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Cave Nebula (Sharpless 2-155) in Cepheus - Ha LRGB

Equipment

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Acquisition details

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Description

The Cave Nebula (Sharpless 2-155) is an ionized H II region. It is a region of new star formation - a ‘stellar nursery’ - in the constellation of Cepheus. Sh2-155 is estimated to be approximately 2,400 light-years from Earth, and spans some 10 light-years.

Data for this object were captured between 10 September and 15 October 2020, from a rig in Spain that is privately owned and remotely operated by Barry Wilson and me.

Capture details are as follows:

Telescope: TEC 140

Camera: QSI 690

Filters: Astrodon

Mount: 10 Micron GM2000HPS

Ha: 24 x 1200s

Lum: 50 x 600s

Red: 48 x 300s

Green: 48 x 300s

Blue: 48 x 300s

A total of 28 hours and 20 minutes exposure.

Data Capture: Steve Milne & Barry Wilson

Image Processing: Steve Milne

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    Cave Nebula (Sharpless 2-155) in Cepheus - Ha LRGB, Steve Milne
    Original
    Cave Nebula (Sharpless 2-155) in Cepheus - Ha LRGB, Steve Milne
    B
  • Final
    Cave Nebula (Sharpless 2-155) in Cepheus - Ha LRGB, Steve Milne
    C

C

Description: A bit more contrast

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Cave Nebula (Sharpless 2-155) in Cepheus - Ha LRGB, Steve Milne