Hemisphere:  Northern  ·  Constellation: Monoceros (Mon)  ·  Contains:  NGC 2237  ·  NGC 2238  ·  NGC 2239  ·  NGC 2246  ·  NGC 2252  ·  Rosette A  ·  Rosette B  ·  Rosette Nebula  ·  The star 12Mon
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The Rosette Nebula, 


            Christophe Perroud
The Rosette Nebula
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The Rosette Nebula

Technical card

Imaging cameras: Nikon D5500 Full Spectrum Mod by JTW Astronomy

Mounts: iOptron SkyGuider Pro

Guiding telescopes or lenses: ZWO 30mm f/4 Mini Guide Scope

Focal reducers: 0.8x for the Sharpstar 76EDPH

Software: Adobe Systems Inc. Photoshop CS2

Filters: Hutech IDAS LPS D1

Dates:Dec. 18, 2020

Frames:Hutech IDAS LPS D1: 68x180" ISO200

Integration: 3.4 hours

Darks: ~20

Flats: ~30

Bias: ~40

Avg. Moon age: 4.08 days

Avg. Moon phase: 17.66%

Bortle Dark-Sky Scale: 4.00

Basic astrometry details

Astrometry.net job: 4131552

RA center: 6h 31' 59"

DEC center: +4° 58' 12"

Pixel scale: 2.679 arcsec/pixel

Orientation: 10.879 degrees

Field radius: 2.149 degrees

Resolution: 4713x3336

Locations: Pied du Jura, Champagne, VD, Switzerland

Data source: Backyard


Hi folks,

This is the last image I took in 2020 on a cold December night and I'm very happy with it. Considering the time I've spent outside by frozen temperature to take lights, darks, flats and bias (I redo bias every 2 months), it was better to bring out a decent final image !!! ;-) Despite the winter sky is known to be the best period, I would cheer having much more "human-friendly temperature" while shooting :-P
So, what to say more about the Rosette Nebula? I'm a bit lazy today so feel free to google it for more information, hahaha :-)
Stay healthy and all the best for you in 2021!