Messier 101
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Image by Kevin Hearst 

M 100 - NGC 5457

 

  • TYPE:  Spiral Galaxy, Type SAB(rs)cd I-II
  • RA: 14h 03.2'
  • DEC:  +54degrees 21'
  • SIZE:  28.9' X 26.9'
  • VISUAL MAGNITUDE:  7.9
  • SURFACE BRIGHTNESS:  14.8
  • CONSTELLATION:  Ursa Major
  • DISTANCE:  17.5 Million Light Years
  • DIAMETER:  118 Thousand Light Years

IMAGING INFORMATION

  • TELESCOPE:  RCOS Carbon fiber 10 inch R/C reflector, on a Parramount GT1100
  • REDUCER/CORRECTOR:  None / operating at 9.0 FL
  • CAMERA:  Santa Barbara Instruments Group, ST-8XME Digital (Thermoelectrically cooled)
  • ADAPTIVE OPTICS:  None, Off-axis guiding with a ST402XME and a Astro Don ROAG
  • FILTER(S):  Astro Don LRGB
  • CCD COOLING TEMPERATURE:  -20 C
  • BINNING/RESOLUTION:  2 X 2 (765 X 510) L 1530x1020
  • EXPOSURE TIME:  80 min.
  • NUMBER OF IMAGES:  14
  • FILM SPEED:  None
  • DATE/TIME:  1-1-2009 / 11:49:05.736 UTC
  • LOCATION:  Valley Center, California
  • TEMPERATURE:  48degrees
  • HUMIDITY:  71%

 

All the images in this site are Copyright 1999-2015 by Kevin Hearst.
Commercial use of these images without the prior written consent or knowledge of the author is strictly prohibited..