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NGC 6503 in Draco

 

CLICK ON IMAGE FOR LARGE VIEW (2400x1800) 

Scope: Celestron 9.25 Edge 235 mm at f/7, Location: Laguna Mountains, CA  30 May 2014  Camera: ST8300M

Exposure: 16 x 9 min  (2x2 bin),  8 x 4.5 min (3x3 bin) RGB exposures.

Processing: Data Collection -  CCDSoft (as FITs).  Calibrated, stacked (Kappa Sigma Combine) Deep Sky Stacker. LRGB channel registration, central gradient removal, and color equalization - Astroart.  Curves, Levels, LRGB combine and finishing  - Photoshop.  Color calibration using eXcalibrator. This image is a straightforward LRGB combine with Luminance layering / LAB color saturation on the RGB channels.   Final Image size is approximately 2400x1800.

North is up in this image.  NGC 6503 is a Dwarf Galaxy in the constellation of Draco. It is in an area called the Local Void where there are very few notable galactic objects There are several background galaxies, but the field is apparently lightly visited most are simply noted as UV Sources. These are identified in an annotated image here.  NGC 6503 is about 18 million light years distant from Earth and covers 7 x 2.4 arc minutes - this is a small span for such a nearby galaxy. It's size is estimated at about 1/3 of that of our Milky Way galaxy.  The Horizontal FOV is 38'.

Image center is located approximately - Equatorial 2000: RA: 17h 49m 27.7s Dec: +7008'41"

 

All images and content remain the property of Jim Thommes - copyright 2003 - 2014

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