Hemisphere:  Northern  ·  Constellation: Monoceros (Mon)  ·  Contains:  12 Mon  ·  NGC 2237  ·  NGC 2238  ·  NGC 2239  ·  NGC 2246  ·  NGC 2252  ·  NGC2237  ·  NGC2238  ·  NGC2239  ·  NGC2244  ·  NGC2246  ·  NGC2252  ·  Rosette A  ·  Rosette B  ·  Rosette Nebula  ·  Rosette nebula  ·  Sh2-275  ·  The star 12Mon
Getting plate-solving status, please wait...
NGC 2239: The Rosette in SHO, 



    
        

            Glenn Diekmann
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NGC 2239: The Rosette in SHO

Getting plate-solving status, please wait...
NGC 2239: The Rosette in SHO, 



    
        

            Glenn Diekmann
Powered byPixInsight

NGC 2239: The Rosette in SHO

Imaging telescopes or lenses: Stellarvue SV102T

Imaging cameras: ZWO ASI294MM Pro

Mounts: Astro-Physics Mach1 GTO CP4

Guiding cameras: ZWO ASI174MM Mini

Focal reducers: Starizona Apex ED L 0.65x Reducer/Flattener

Software: PixInsight 1.8  ·  Adobe Lightroom Classic CC  ·  PHD2  ·  Starkeeper Software Voyager

Filters: Astrodon Ha 5 nm  ·  Astrodon OIII 5 nm  ·  Astrodon SII 5 nm


Dates:Jan. 1, 2021

Frames:
Astrodon Ha 5 nm: 6x240" (gain: 120.00) -10C bin 2x2
Astrodon OIII 5 nm: 12x240" (gain: 120.00) -10C bin 2x2
Astrodon SII 5 nm: 4x240" (gain: 120.00) -10C bin 2x2

Integration: 1.5 hours

Darks: ~50

Flats: ~20

Bias: ~200

Avg. Moon age: 17.06 days

Avg. Moon phase: 94.14%

Bortle Dark-Sky Scale: 7.00


Astrometry.net job: 4130633

RA center: 6h 32' 14"

DEC center: +4° 54' 32"

Pixel scale: 2.039 arcsec/pixel

Orientation: -179.237 degrees

Field radius: 1.345 degrees


Resolution: 3976x2594

Data source: Backyard

Description

This short integration represents first light with my new camera, the ZWO ASI294MM Pro. It is extremely sensitive and produces very clean data. It does have pronounced amp glow in the upper right edge of the frame, but it calibrates out completely. Its sensor has a very small amount of tilt (CCD Inspector reports about 2%) but I am trying to perfect the spacing before considering the tilt.

From my house, the Rosette Nebula is positioned right in the light dome of the greater Los Angeles area. Although I would love to capture it in LRGB, as I last did from my dark site in 2018, light pollution makes narrowband filters a necessity.

Comments

Revisions

  • NGC 2239: The Rosette in SHO, 



    
        

            Glenn Diekmann
    Original
  • NGC 2239: The Rosette in SHO, 



    
        

            Glenn Diekmann
    B
  • NGC 2239: The Rosette in SHO, 



    
        

            Glenn Diekmann
    C
  • Final
    NGC 2239: The Rosette in SHO, 



    
        

            Glenn Diekmann
    D

B

Description: Slightly warmer color balance.

Uploaded: ...

C

Description: Less green.

Uploaded: ...

D

Description: Saturation and contrast adjustments. Less green.

Uploaded: ...

Sky plot

Sky plot

Histogram

NGC 2239: The Rosette in SHO, 



    
        

            Glenn Diekmann