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Supernova Remnant Sh2-224



Scope: Explore Scientific MN152 Maksutov Newtonian at f/4.8, Location: DAA Observatory, Shelter Valley, CA, 11 and 15 November 2020,  Camera: ASI294MM (Baader Ha, RGB, ZWO OIII filters)

Exposure: Exposure: Ha - 24 x 8 min (gain-300 2x2), OIII - 24 x 8 min (gain-300 2x2) ,  RGB -16 x 4 min (gain-60 2x2) each RGB exposures.

Processing: Data Collection -  Sequence Generator Pro (as FITs).  Sub-frame calibration - Pixinsight. Sub-frame  registration and integration (Average combine -  Winsorized Sigma Clipping) - PixInsight.  Mure Denoise - PixInsight. Non-linear stretching, normalization and gradient removal - PixInsight.  Generation of starless nebulosity Ha and OIII images for later processing - starnet++. Curves, Levels, RGB combine, Luminance layering - PixInsight. Stars and Starless  Luminance combine - PixInsight.  Final finishing  - Photoshop.  Photometric RGB calibration - PixInsight. Annotation - PixInsight, Aladin (Simbad and NED), and PhotoShop. This image is a  Bicolor narrow band image (modified HOO) with RGB stars.  Image processed at 4144x2822 resolution. Final Image size is approximately  3000x2050.

North is to the right in this image.  This image shows the supernova remnant  SNR G166.0+04.3 (2014); it is more popularly known as Sh2-224 or LBN 769. The Sharpless and Lynds designations are really the HII regions within the remnant. This supernova remnant is also designated as a BLAZER in the Fermi Large Area Telescope (LAT) 2FGL data series (2FGL J0526.6+4308) - indicating it as a high energy particle ejection source.   There are several background galaxies visible in this image as well; only one has a distance estimate (LEDA 97090 - 513 million light years). These objects and some of the brighter stars are identified in the annotated image. Horizontal FOV is approximately 90 arc minutes. Full size image scale is 1.8 arcsec/pix.

Image center is approximately - Equatorial 2000: RA: 05h 26m 37s Dec: +4300'30"


All images and content remain the property of Jim Thommes - copyright 2003 - 2020

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