Rosette Nebula (Bicolor) (Kirk)

Rosette Nebula (Bicolor)

Rosette Nebula (Bicolor)

The Rosette Nebula (other designation Caldwell 49) is a huge spherical H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. The open star cluster NGC 2244 (aka Caldwell 50) is found within the nebulosity of the nebula and the stars of the cluster were formed from the nebula's matter.

The cluster and nebula lie at a distance of approximately 5,000 light-years from us and measure about 130 light years in diameter. The radiation from the young stars excites the atoms within the nebula which in turn causes them to emit a glow of visible radiation producing the emission nebula we see. The mass of the nebula has been estimated to be about 10,000 times the mass of our sun.

Acquisition Date: October 24, 2017

Location: Western Massachusetts

Camera: SBIG STF8300M @ -15°C

Telescope: Telescope: Takahashi FSQ106EDX-III @f/5

Mount: Astro-Physics AP1100

Guide scope: Off Axis Guiding

Guide Camera: Starlight Express Lodestar 2

Filters:

- HA (3nm Astrodon) 12 x 30 min. (360 min.)

- OIII (3nm Astrodon) 10 x 30 min. (300 min.)

Total Exposure: 660min. (11hr)

Limiting Magnitude: 5.1

Comments:

- Captured with Sequence Generator Pro

- Processed in Pixinsight 1.8 and Photoshop CS5

Original
Final
B

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
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 failed
Started	...
Astrometry.net job	2439059
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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