NGC2237 - Rosette Nebula (Cristiano Secci)

Celestial hemisphere: Northern · Constellation: Monoceros (Mon) · Contains: NGC 2239 · NGC 2244 · NGC 2252 · Rosette nebula · The star 12Mon

NGC2237 - Rosette Nebula, Cristiano Secci

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NGC2237 - Rosette Nebula

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NGC2237 - Rosette Nebula

The Rosette Nebula (also known as Caldwell 49) is a large spherical H II region (circular in appearance) located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. The open cluster NGC 2244 (Caldwell 50) is closely associated with the nebulosity, the stars of the cluster having been formed from the nebula's matter.

The cluster and nebula lie at a distance of some 5,000 light-years from Earth) and measure roughly 130 light years in diameter. The radiation from the young stars excites the atoms in the nebula, causing them to emit radiation themselves producing the emission nebula we see. The mass of the nebula is estimated to be around 10,000 solar masses.

A survey of the nebula with the Chandra X-ray Observatory has revealed the presence of numerous new-born stars inside optical Rosette Nebula and studded within a dense molecular cloud. Altogether, approximately 2500 young stars lie in this star-forming complex, including the massive O-type stars HD 46223 and HD 46150, which are primarily responsible for blowing the ionized bubble.

Technical Data:

OTA: TecnoSky SuperAPO 80 - Reduced at F/4.8

Mount: iOptron CEM60

Camera: ZWO ASI 1600 MM-C, cooled at -20C

Guide Camera: QHY-5LII Mono

Guide Scope: ArteSky 60mm F/4

Filters: Optolong Ha, OIII, SII

Baader Coma Corrector MPCIII

Software: Sequence Generator Pro, PHD2, Deep Sky Stacker, PS

33 frames in total, Gain 139 - Offset 21

Ha 10x120s (20 minutes)

OIII 13x120s (26 minutes)

SII 10x120s (20 minutes)

Total Integration Time: 1 hour, 6 minutes

15 Bias

15 Darks

60 Flats (20 for each channel)

ZWO ASI1600MM/QHY163M
Narrowband imaging
Imagers of Italy

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Basic success
Started	...
Astrometry.net job	2815415
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC2237 - Rosette Nebula

NGC2237 - Rosette Nebula

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NGC2237 - Rosette Nebula

NGC2237 - Rosette Nebula

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