Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)
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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

Technical card

Imaging telescopes or lenses: TEC-140

Imaging cameras: QSI 690 WSG-8

Mounts: 10 Micron GM2000 HPS II UP

Guiding telescopes or lenses: TEC-140

Guiding cameras: Starlight Xpress Lodestar X2

Focal reducers: TEC Field Flattener

Software: Sequence Generator Pro  ·  Adobe Photoshop 6 CS  ·  Open PHD PHD 2.5  ·  Pixinsight 1.8

Filters: Ha 3nm  ·  Astrodon Tru-Balance LRGB E-Series Gen 2 Blue  ·  Astrodon Tru-Balance LRGB E-Series Gen 2 Green  ·  Astrodon Tru-Balance LRGB E-Series Gen 2 Red  ·  Astrodon Tru-Balance LRGB E-Series Gen 2 Luminance


Dates:Oct. 15, 2020

Frames:
Astrodon Tru-Balance LRGB E-Series Gen 2 Blue: 48x300" bin 1x1
Astrodon Tru-Balance LRGB E-Series Gen 2 Green: 48x300" bin 1x1
Ha 3nm: 24x1200" bin 1x1
Astrodon Tru-Balance LRGB E-Series Gen 2 Luminance: 50x600" bin 1x1
Astrodon Tru-Balance LRGB E-Series Gen 2 Red: 48x300" bin 1x1

Integration: 28.3 hours

Avg. Moon age: 27.98 days

Avg. Moon phase: 2.68%


Basic astrometry details

Astrometry.net job: 4068688

RA center: 22h 56' 37"

DEC center: +62° 30' 21"

Pixel scale: 0.743 arcsec/pixel

Orientation: 89.692 degrees

Field radius: 0.438 degrees


Resolution: 3297x2676

Locations: E-EyE, Fregenal de la Sierra, Extremadura, Spain

Data source: Own remote observatory

Remote source: e-EyE Extremadura

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

Comments

Revisions

    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