Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  IC 1871
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IC 1871 - the 'Whirling Dervish' in the Soul Nebula, 



    
        

            Steve Milne
IC 1871 - the 'Whirling Dervish' in the Soul Nebula
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IC 1871 - the 'Whirling Dervish' in the Soul Nebula

Getting plate-solving status, please wait...
IC 1871 - the 'Whirling Dervish' in the Soul Nebula, 



    
        

            Steve Milne
IC 1871 - the 'Whirling Dervish' in the Soul Nebula
Powered byPixInsight

IC 1871 - the 'Whirling Dervish' in the Soul Nebula

Technical card

Imaging telescopes or lenses: TEC-140

Imaging cameras: QSI 690 WSG-8

Mounts: 10 Micron GM2000 HPS II UP

Guiding cameras: Starlight Xpress Lodestar X2

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

Filters: Astrodon OIII 3nm  ·  Ha 3nm  ·  SII 3nm


Dates:Jan. 27, 2019

Frames:
Astrodon OIII 3nm: 22x1200" (7h 20') bin 1x1
Astrodon SII 3nm: 22x1200" (7h 20') bin 1x1
Ha 3nm: 24x1200" (8h) bin 1x1

Integration: 22h 40'

Avg. Moon age: 21.74 days

Avg. Moon phase: 54.30%


Basic astrometry details

Astrometry.net job: 2526285

RA center: 02h56m48s

DEC center: +60°3824

Pixel scale: 0.744 arcsec/pixel

Orientation: 179.921 degrees

Field radius: 0.444 degrees


Resolution: 2682x3355

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

Data source: Unknown

Description

A ‘Dervish’ is a member of a Muslim religious order who follows an ascetic way of life. Some dervishes practice ecstatic, devotional rituals (sema), and this gave rise to the term ‘Whirling Dervish’. Whether or not the dust cloud at the centre of the Soul Nebula resembles such an individual, I cannot say. Nevertheless, the term ‘Whirling Dervish’ has been applied to this feature.

This star forming region is to be found around 6,500 light years away in the constellation of Cassiopeia.

IC1871 was photographed between 15 December 2018 and 27 January 2019 from a remote imaging rig in Spain that is owned and operated by Barry Wilson and me.

Capture details are as follows:

Telescope: TEC 140

Camera: QSI 690

Filters: Astrodon 3nm NB

Mount: 10 Micron GM2000HPS

Ha: 24 x 1200s

OIII: 22 x 1200s

SII: 22 x 1200s

A total of 22 hours and 40 minutes exposure.

Data Capture: Steve Milne & Barry Wilson

Image Processing: Steve Milne

Comments

Revisions

    IC 1871 - the 'Whirling Dervish' in the Soul Nebula, 



    
        

            Steve Milne
    Original
    IC 1871 - the 'Whirling Dervish' in the Soul Nebula, 



    
        

            Steve Milne
    B
  • Final
    IC 1871 - the 'Whirling Dervish' in the Soul Nebula, 



    
        

            Steve Milne
    C

B

Description: Barry Wilson suggested some new LHE techniques which I was keen to try out. I think this did give the image improved contrast, and I felt I should complement this with a bit more of a saturation boost.

Uploaded: ...

C

Description: Couple of suggestions from Barry on previous version.

Uploaded: ...

Sky plot

Sky plot

Histogram

IC 1871 - the 'Whirling Dervish' in the Soul Nebula, 



    
        

            Steve Milne