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Cassiopeia A (Cas A) Supernova Remnant in SII/OIII/RGB, 



    
        

            Sergey Trudolyubov
Cassiopeia A (Cas A) Supernova Remnant in SII/OIII/RGB
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Cassiopeia A (Cas A) Supernova Remnant in SII/OIII/RGB

Technical card


Dates:Sept. 18, 2019Oct. 6, 2019Oct. 24, 2019Oct. 26, 2019Nov. 4, 2019

Frames:
Astrodon 5nm OIII 36mm: 47x300" (gain: 200.00) -10C bin 1x1
Astrodon B Gen2 E-Series 36mm: 256x30" (gain: 200.00) -10C bin 1x1
Astrodon G Gen2 E-Series 36mm: 220x30" (gain: 200.00) -10C bin 1x1
Astrodon R Gen2 E-Series 36mm: 240x30" (gain: 200.00) -10C bin 1x1
Baader SII 36mm Filter 8nm: 47x300" (gain: 200.00) -10C bin 1x1

Integration: 13.8 hours

Avg. Moon age: 17.45 days

Avg. Moon phase: 42.90%


Basic astrometry details

Astrometry.net job: 3258171

RA center: 23h 23' 24"

DEC center: +58° 48' 46"

Pixel scale: 0.495 arcsec/pixel

Orientation: 359.230 degrees

Field radius: 0.210 degrees


Resolution: 2496x1758

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

Data source: Traveller

Description

Cassiopeia A (Cas A) supernova remnant, one of the best studied objects in the sky at all wavelengths, but rarely imaged by amateur astronomers due to its small size and low brightness. This image is a combination of narrowband (OIII and SII) and RGB data taken over several nights in September-November 2019 with 250mm f/4 Lacerta Photonewton and ASI183MM Pro camera. The individual narrowband and broadband exposures were taken at camera gain 200. To reduce the effect of bad seeing, final RGB images were constructed from a series of short (30 s) exposures with FWHM<3.0". The synthetic luminance was produced using SII, OIII and RGB data. R and B color channels are a blend of the broadband and narrowband images: R(R and SII) and B(B and OIII).

OIII: 47x300s (Gain 200, bin 1x1)
SII: 47x300s (Gain 200, bin 1x1)
R: 240x30s (Gain 200, bin 1x1)
G: 220x30s (Gain 200, bin 1x1)
B: 256x30s (Gain 200, bin 1x1)

Total exposure: 13.8 hours

Comments

Author

strudolyubov
Sergey Trudolyubov
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Revisions

  • Final
    Cassiopeia A (Cas A) Supernova Remnant in SII/OIII/RGB, 



    
        

            Sergey Trudolyubov
    Original
  • Cassiopeia A (Cas A) Supernova Remnant in SII/OIII/RGB, 



    
        

            Sergey Trudolyubov
    F

F

Description: Closeup view

Sky plot

Sky plot

Histogram

Cassiopeia A (Cas A) Supernova Remnant in SII/OIII/RGB, 



    
        

            Sergey Trudolyubov