Hemisphere:  Northern  ·  Constellation: Monoceros (Mon)  ·  Contains:  NGC 2239  ·  NGC 2244  ·  NGC2237  ·  NGC2238  ·  NGC2239  ·  NGC2244  ·  Rosette nebula  ·  Sh2-275
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Rosette Nebula core & 'The Carnival of Animals' - bit of fun!, 


            Barry Wilson
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Rosette Nebula core & 'The Carnival of Animals' - bit of fun!

Imaging telescopes or lenses: TEC 140  ·  William Optics FLT 132 Triplet APO f/7

Imaging cameras: QSI683wsg  ·  QSI 690 wsg-8

Mounts: 10 Micron GM1000HPS  ·  10 Micron GM2000 HPS II UP

Focal reducers: TEC Field Flattener  ·  William Optics FF/FR IV x0.8

Software: Sequence Generator Pro  ·  PixInsight 1.8 Ripely

Filters: Astrodon 5nm Ha  ·  Astrodon Ha 3nm  ·  Astrodon 5nm Olll  ·  Astrodon 5nm SII

Dates:Jan. 11, 2018March 15, 2019

Astrodon 5nm Ha: 12x1200" bin 1x1
Astrodon 5nm Olll: 12x1200" bin 1x1
Astrodon 5nm SII: 12x1200" bin 1x1
Astrodon Ha 3nm: 28x1200" bin 1x1

Integration: 21.3 hours

Avg. Moon age: 16.51 days

Avg. Moon phase: 43.76%

Astrometry.net job: 2586105

RA center: 6h 31' 8"

DEC center: +5° 1' 33"

Pixel scale: 0.744 arcsec/pixel

Orientation: 90.173 degrees

Field radius: 0.420 degrees

Resolution: 3337x2331

Locations: Home observatory, Totnes, Devon, United Kingdom; Entre Encinas y Estrellas E-EyE, Fregenal de la Sierra, Extremadura, Spain

Data source: Mix of multiple source


This image comprises recent Ha data from e-Eye from the TEC140/QSI690 Steve and I operate and SII, Ha and OIII data from my home observatory in Totnes acquired in 2018 using my WO 132FLT/QSI683 at 1.47"/px, https://astrob.in/329357/D/.

Steve and I have been imaging the Rosette core at 0.75"/px early evening as the moon has been rising before switching to other targets mid-evening. We will not be able to collect the SII and OIII this season so I processed the 28 x 1200s of Ha and re-aligned my older image to provide the 'colour' for the higher resolution Ha data: it is effectively like imaging bin 1 for the Ha and bin 2 for the SII and OIII.

After a crop to take care of the mis-aligmnent and some additional NR due to the resampling, a few enhancements, et voila!

The 'Carnival of Animals' reference is of course the resemblance of the dark dust to a troop of fantastical animals and Saint-Saens humorous musical suite. . . which animals, well your guess is as good as mine.


Ha data: Barry Wilson & Steve Milne.
Balance of NB data: Barry Wilson


Sky plot

Sky plot


Rosette Nebula core & 'The Carnival of Animals' - bit of fun!, 


            Barry Wilson

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