Hemisphere:  Northern  ·  Constellation: Monoceros (Mon)  ·  Contains:  NGC 2239  ·  NGC 2244  ·  Rosette nebula  ·  The star 12Mon
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Rosette in Narrowband NGC 2237, 


            Andy 01
Rosette in Narrowband NGC 2237
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Rosette in Narrowband NGC 2237

Technical card

Imaging telescopes or lenses: Sidereal Trading/Klaus Helmerichs carbon fibre 10"F4 Newtonian

Imaging cameras: QSI 683 wsg-8

Mounts: Takahashi NJP Temma-2

Guiding cameras: Starlight Xpress Lodestar Off Axis Guider

Focal reducers: TeleVue Paracorr Coma Corrector

Filters: Astrodon Ha 1.25 3nm  ·  Astrodon O-III 3nm  ·  Astrodon S2 3nm  ·  Astrodon Red Tru-Balance E-Series Gen 2 Red filter  ·  Astrodon Tru-Balance E-Series Green 50mm Green Filter  ·  Astrodon Tru-Balance E-Series Blue 36mm Blue Filter

Dates:Jan. 20, 2020

Astrodon Ha 1.25 3nm: 12x600"
Astrodon O-III 3nm: 18x600"
Astrodon S2 3nm: 24x600"

Integration: 9.0 hours

Avg. Moon age: 25.21 days

Avg. Moon phase: 19.65%

Basic astrometry details

Astrometry.net job: 3204285

RA center: 6h 32' 37"

DEC center: +4° 55' 12"

Pixel scale: 0.807 arcsec/pixel

Orientation: 125.082 degrees

Field radius: 0.512 degrees

Resolution: 3691x2695

Locations: Burwood, Melbourne, Victoria, Australia

Data source: Backyard


Would the Rosette Nebula by any other name look as sweet? The bland New General Catalog designation of NGC 2237 doesn't appear to diminish the appearance of this flowery emission nebula. Inside the nebula lies an open cluster of bright young stars designated NGC 2244. These stars formed about four million years ago from the nebular material and their stellar winds are clearing a hole in the nebula's center, insulated by a layer of dust and hot gas. Ultraviolet light from the hot cluster stars causes the surrounding nebula to glow. The Rosette Nebula spans about 100 light-years across, lies about 5000 light-years away, and can be seen with a small telescope towards Monoceros.(text>Apod)

Full tricolour narrowband image with RGB stars complete!
I had fun with the colour palatte on this one - hope you like it too!


Sky plot

Sky plot


Rosette in Narrowband NGC 2237, 


            Andy 01