NGC2244_Bi-Colour_19-01-23 - a photo on Flickriver

            Manage to image this in one night, out of 3 clear nights I had recently (Who said Christmas comes but once a year). This is a wider field image than my previous ones at about 2°. Taken with the Explore Scientific 102mm F7 and Explore Scientific 0.7 focal reducer. After sleeping on it over night I felt that my processed image was over saturated so I dialled it back a bit. Always worth looking at your image with a fresh pair of eyes in the morning before posting.

Note:
I removed all the stars after the initial processing using StarNet++ and then added the combined Ha Oiii stars back in at the end.

The Rosette Nebula commonly known as NGC 2237 with its associated Open Cluster NGC 2244. This is a large Ha region which is part of a large molecular cloud in the of constellation Monoceros. It lies at a distance of approximately 5,200 ly from earth and is about 130 ly in diameter. The age of the open cluster is estimated to be less than 5 million years.

EQUIPMENT:-
Telescope: Explore Scientific 102mm F7 APO Carbon
Focal Reducer: Explore Scientific 0.7
Mount: AZ-EQ6 GT
Imaging Camera: ZWO ASI1600mm-Cool cmos
Guide Camera: Orion Mini Auto Guide
Filter: Astronomik 6nm Ha
Filter: Astronomik 6nm Oiii

IMAGING DETAILS:-
NGC2244, NGC2237 Rosette Nebula (Monoceros)
Gain 139 (Unit Gain)
Dithering
Chip Temp Cooled to -20 degC
25 Ha subs@300sec (2h 05min)
28 Oiii subs@300sec (2h 20min)
Total imaging Time 4h 25min
20 Darks
25 Flats

PROCESSING/GUIDING SOFTWARE:-
APT "Astro Photograph Tools"
StarNet++
DSS
PS CS2
   

Taken on: January 19, 2023

Tags:

NGC2237

NGC2244

NGC2239

rosette nebula

Nebula

Narrow band

Astronomy

Astrophotography

AZ-EQ6 GT

ZWO ASI1600mm-Cool

ZWO EFW Electric Filter Wheel

Bi-Colour

BiColor

Oiii

Open Cluster

Explore Scientific 0.7 Focal Reducer

Explore Scientific APO 102mm F7 Carbon

MarkLB57

Emission Nebula

Monoceros « less

Sets appears in: • Bi-Colour Images • Nebulae more » • DeepSky Selection « less

Groups appears in: • Astrophotography - Astronomy - Astrophysics • Astronomy more » • Night Sky, The • Galaxies & Stars Group ( Planets, Moons & Comets too!) • Deep Space Astrophotography • Amateur Astronomy • Society for Popular Astronomy • Astronomy, Stars, Planets and Space • The Universe • Astronomy for all • Insight Astronomy Photographer of the Year • ***Flickr Global • Narrowband Astrophotography • Sky @ Night • Astronomy Photos • BBC Sky at Night and Stargazing Live • Starry Night Astrophotography • Universe Today • Backyard Astrophotography • BudgetAstro • APOD Submissions • Digital Astrophotography • in explore • Amateur Astro-Photography • ExtraSolar Astrophoto • The Universe: Astronomy Photography • ZWO ASI Astronomy • ZWO ASI1600mm-cool • Flickrology « less

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