Rosette in Monoceros (Terry Hancock)

Rosette in Monoceros

The Rosette Nebula (also referred to as NGC2244 and Caldwell 49) This active star forming nebula lies in the Monoceros Constellation (the Unicorn) only 5,200 light-years distant. The dense cloud of hydrogen has been condensing to form new stars and is thought to be very similar to the environment that gave birth to our own Solar System. As the new stars ignite they blow off their shrouds and irradiate thier surroundings and cause the hydrogen to glow from the ionizing radiation. Like dust being blown by the wind, these newborns push the hydrogen and dust away where it collapses under gravity to accelerate the formation of yet more stars, excavating the inner region of the nebula over time.

A few weeks ago I processed a Hubble Palette version of this same region seen here: www.flickr.com/photos/terryhancock/49058519297/in/datepos... this latest wide field process of the Rosette Nebula otherwise known as Caldwell 49 using data from Grand Mesa Observatory’s system 1a the William Optics Redcat with QHY16200A monochrome CCD was photographed in H-Alpha and LRGB.

This data is from Grand Mesa Observatory’s “System 1a” and available from their legacy data archive: grandmesaobservatory.com/legacy

Captured over 4 nights for a total acquisition time of 15.1 hours.

Technical Details

Captured and processed by: Terry Hancock

Location: GrandMesaObservatory.com Purdy Mesa, Colorado

November 1st, 4th, 5th, December 10th 2019

LRGB 480 min 12 x 300 sec each

HA 430 min 43 x 600 sec

Filters by Optolong

Camera: QHY16200A

Gain 0, Offset 130 Calibrated with Dark, Bias Frames and Flat frames.

Optics: William Optics Redcat 51 APO @ F4.9

EQ Mount: Paramount ME

Image Acquisition software Maxim DL6

Pre Processing in Pixinsight

Post Processed in Photoshop CC

Starnet (star removal)

Star Spikes Pro 4

	Distinct awarded users	Total awarded images
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Own remote observatory
Amateur hosting facility
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Professional, scientific grade data
Mix of multiple sources
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Unknown

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