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Sh2-155 The Cave Nebula, 





    
        

            Barry Wilson
Sh2-155 The Cave Nebula

Sh2-155 The Cave Nebula

Technical card

Resolution: 2813x2063

Dates:Sept. 16, 2017Sept. 21, 2017

Frames:
Astrodon 5nm Ha: 6x1200" bin 1x1
Astrodon E-Series Blue filter: 15x600" bin 1x1
Astrodon E-Series Green filter: 15x600" bin 1x1
Astrodon E-Series Red filter: 15x600" bin 1x1

Integration: 9.5 hours

Avg. Moon age: 13.45 days

Avg. Moon phase: 9.10%

Astrometry.net job: 1730239

RA center: 344.158 degrees

DEC center: 62.526 degrees

Pixel scale: 2.093 arcsec/pixel

Orientation: 91.937 degrees

Field radius: 1.014 degrees

Locations: Home observatory, Totnes, Devon, United Kingdom

Description

I imaged this target some years ago and was not very satisfied with the bi-colour image I processed at the time. So I had to improve this time around :-). I certainly feel this is a better image both from a data capture and processing perspective. However, I have had little time to acquire data and the weather has been poor again in the UK this summer. My forecast for the next week is dreadful too so I felt I better process the HaRGB data and remain optimistic for a clear window for SII and OIII data (if possible) in the next week or so.

The equipment is destined for a new remote setup in the near future so I do not have an option to persevere . . . and any way I want to switch to my longer FL refractor.

I've added further RGB data and then re-processed completely for revision D, a slight crop to emphasise the Cave.

Thanks for looking.

Comments

Author

Barry-Wilson
Barry Wilson
License: None (All rights reserved)
3375
Like

Revisions

  • Sh2-155 The Cave Nebula, 





    
        

            Barry Wilson
    Original
  • Sh2-155 The Cave Nebula, 





    
        

            Barry Wilson
    B
  • Sh2-155 The Cave Nebula, 





    
        

            Barry Wilson
    C
  • Final
    Sh2-155 The Cave Nebula, 





    
        

            Barry Wilson
    D

B

Slight MLT sharpening

C

Crop - to better show the 'cave'.

D

Reprocessed with additional data

Sky plot

Sky plot

Histogram

Sh2-155 The Cave Nebula, 





    
        

            Barry Wilson

In these public groups

UK Astro-Imaging