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Lobster Claw Nebula in Cassiopia - sh2-157 / LBN537, 





    
        

            Jonathan W MacCollum
Lobster Claw Nebula in Cassiopia - sh2-157 / LBN537

Lobster Claw Nebula in Cassiopia - sh2-157 / LBN537

Technical card

Resolution: 6293x3906

Dates:Sept. 16, 2019Sept. 19, 2019Sept. 20, 2019

Frames:
Astrodon 1.25" 5nm Ha: 134x240" (gain: 111.00) -15C bin 1x1
Astrodon O3 1.25" 3nm: 191x240" (gain: 111.00) -15C bin 1x1
Astrodon SII 1.25 5nm: 127x240" (gain: 111.00) -15C bin 1x1

Integration: 30.1 hours

Darks: ~30

Flats: ~20

Flat darks: ~20

Avg. Moon age: 19.00 days

Avg. Moon phase: 79.16%

Bortle Dark-Sky Scale: 4.00

Astrometry.net job: 2936093

RA center: 348.884 degrees

DEC center: 60.251 degrees

Pixel scale: 0.497 arcsec/pixel

Orientation: 89.116 degrees

Field radius: 0.512 degrees

Data source: Backyard

Description

Two panel mosaic of the inner structure of the Lobster Claw nebula with LBN 537 in Ha, Oiii and Sii...

Red=Sii
Green=50%Oiii and Sii
Blue=Oiii
L=Blend SuperLuminance and Ha

Acquisition Breakdown:
Panel 1 (left)
Ha: 70*4+0*5 = 4.667hrs (4:40)
Oiii: 89*4+0*5 = 5.933hrs (5:56)
Siii: 30*4+18*5 = 3.500hrs (3:30)
Total: 14:06 hrs

Panel 2 (right)
Ha: 58*4+5*5 = 4.283hrs (4:17)
Oiii: 97x4+4*5 = 6.8 hrs (6:48)
Siii: 67x4+6*5 = 4.966hrs (4:58)
Total: 16:03 hrs

There's a bit of SNR discrepancy in the mosaic, but hope to revisit this adding a 3rd panel to it in the near future, weather permitted.
Siii: 67x4+6*5 = 4.966hrs (4:58)

Comments

Author

eigenVector
Jonathan W MacCollum
License: Attribution-NoDerivs Creative Commons
1012
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Revisions

  • Final
    Lobster Claw Nebula in Cassiopia - sh2-157 / LBN537, 





    
        

            Jonathan W MacCollum
    Original
  • Lobster Claw Nebula in Cassiopia - sh2-157 / LBN537, 





    
        

            Jonathan W MacCollum
    B
  • Lobster Claw Nebula in Cassiopia - sh2-157 / LBN537, 





    
        

            Jonathan W MacCollum
    C

B

Full mosaic frame

C

Starnet Starless

Sky plot

Sky plot

Histogram

Lobster Claw Nebula in Cassiopia - sh2-157 / LBN537, 





    
        

            Jonathan W MacCollum