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Contains:  NGC 6995, Network nebula, NGC 6992, IC 1340, Veil nebula, Lace-work nebula, Filamentary nebula, NGC 6960, The star 52Cyg
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Cygnus Loop widefield HaOIIIRGB, 





    
        

            Sergey Trudolyubov

Cygnus Loop widefield HaOIIIRGB

Technical card

Resolution: 3088x4096

Dates:Aug. 20, 2018Sept. 27, 2018Oct. 28, 2018Nov. 6, 2018Nov. 8, 2018Nov. 9, 2018

Frames:
Astrodon 5nm Ha 36mm: 30x1200" (gain: 53.00) -10C bin 1x1
Astrodon 5nm Ha 36mm: 28x2000" (gain: 53.00) -10C bin 1x1
Astrodon 5nm OIII 36mm: 16x2000" (gain: 53.00) -10C bin 1x1
Astrodon B Gen2 E-Series 36mm: 24x300" -10C bin 1x1
Astrodon G Gen2 E-Series 36mm: 24x300" -10C bin 1x1
Astrodon R Gen2 E-Series 36mm: 36x300" -10C bin 1x1

Integration: 41.4 hours

Avg. Moon age: 12.69 days

Avg. Moon phase: 42.36%

Astrometry.net job: 2431845

Locations: Abiqui Lake, Abiqui, New Mexico, United States; Los Alamos, Los Alamos, New Mexico, United States

Data source: Traveller

Description

A widefield Ha/OIII/RGB image of the Cygnus Loop supernova remnant complex taken with Rokinon 135mm f2 lens and ZWO ASI183MM Pro camera over the course August-November 2018. The lens was riding piggyback on the Stellarvue APO SVA130T triplet mounted on the Orion HDX-110 EQ-G mount.

The image is a combination of narrowband (Ha and OIII) and RGB data. The synthetic luminance was produced using Ha and OIII data. Each color channel is a blend of the broadband and narrowband images: R(R and Ha), G(G and OIII), B(B and OIII). The narrowband exposures were taken with lens stopped at f2.8 and camera gain 53, while RGB data was captured at f4.0 and gain 0.

Ha: 30x1200s and 28x2000s (@ f2.8, Gain 53, bin1x1)
OIII: 16x2000s (@ f2.8, Gain 53, bin1x1)
R: 36x300s (@ f4.0, Gain 0, bin1x1)
G: 24x300s (@ f4.0, Gain 0, bin1x1)
B: 24x300s (@ f4.0, Gain 0, bin1x1)

Total exposure: 41.4 hours

The black and white Ha images in Revision B and C show the intricate structure of shocks and diffuse emission that gave this supernova remnant its Veil/Cirrus Nebula name. Fainter features in the outer parts of the nebula correspond to the shock front from the SN blast. The brighter filamentary and diffuse features (like Eastern Veil (NGC 6992, NGC 6995, and IC 1340), Western Veil (NGC 6960), Pickering's Triangle and Southeastern Knot) are due to interaction of the supernova blast wave with interstellar clouds.

Comments

Author

strudolyubov
Sergey Trudolyubov
License: None (All rights reserved)
6559
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Revisions

  • Cygnus Loop widefield HaOIIIRGB, 





    
        

            Sergey Trudolyubov
    Original
  • Cygnus Loop widefield HaOIIIRGB, 





    
        

            Sergey Trudolyubov
    B
  • Cygnus Loop widefield HaOIIIRGB, 





    
        

            Sergey Trudolyubov
    C
  • Final
    Cygnus Loop widefield HaOIIIRGB, 





    
        

            Sergey Trudolyubov
    E

B

Ha image

C

Inverted Ha image

E

Adjusted image contrast

Histogram

Cygnus Loop widefield HaOIIIRGB, 





    
        

            Sergey Trudolyubov