Click here for a higher resolution image (905 Kb)

 

 

The Details
Object
M101 The Pinwheel Galaxy in Ursa Major
Optics
Astro-Physics 175 EDF Refractor at f/8.3
Platform
Astro-Physics 1200 GTO
Camera
SBIG STL-11000M
Filters
Tru-Balance LRGB Gen 2 filter set
Date
01 May 2014
Location
Grandview Campground, White Mountains CA
Exposure
L 12 x 600 sec 1x1 bin; RGB 4 x 600 sec, 1x1 bin
Software
Maxim DL/CCD, CCDStack 2.0, Photoshop CS5
Orientation
Field of View: 01°12’29" x 00°48’17"centered on RA 12h17m47s
DEC +47°24’30” (2000.0) . North angle 90.39°; east 90° CCW from north
Notes
Discovered by Pierre Mechain on March 27, 1781. Also known as NGC 5457 and more familiarly as the Pinwheel Galaxy, this island universe is approximately 27 million light years from Earth. It is a large spiral galaxy spanning nearly 170,000 light years across and presents itself to us in a beautiful face-on configuration. Located within the HII star-forming spiral arms of M101 are 10 bright condensations each having their own NGC designation. They are NGC 5447, 5449, 5450, 5451, 5453, 5455, 5458, 5461, 5462 and 5471. There are also a number of more distant galaxies scattered throughout the field of view, including NGC 5477 below M101 and NGC 5474 in the lower right of the frame.

 

 

 

Home | Image Gallery | Equipment | Observing Sites | About Dave | Links | Contact Me

 

Site and content copyright ©2004 David M. Jurasevich. All rights reserved.
No reproduction of these images are permitted without prior approval of the author.