NGC 2261
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 NGC 2261

"Hubble's Variable Nebula"

  • TYPE:  Emission  and Reflection Nebula
  • RA: 06h 39.2'
  • DEC:  -08degrees 44'
  • SIZE:  3.5' X 1.5'
  • VISUAL MAGNITUDE:  3.7
  • SURFACE BRIGHTNESS:  NA
  • CONSTELLATION:  Monoceros
  • DISTANCE:  3000 Light Years
  • DIAMETER:  3 Light Years long and 1.5 Light Years wide

IMAGING INFORMATION

  • TELESCOPE:  Celestron C-11, FL 2800 mm, Schmidt-Cassegrain reflector
  • REDUCER/CORRECTOR:  Celsetron 6.3
  • CAMERA:  Santa Barbara Instruments, ST-8 Digital (Thermoelectrically cooled)
  • ADAPTIVE OPTICS:  Santa Barbara Instruments, AO-7
  • FILTER(S):  Lumicon Oxygen III
  • CCD COOLING TEMPERATURE:  -15 C
  • BINNING/RESOLUTION:  2 X 2 (765 X 510)
  • EXPOSURE TIME:  15 minutes
  • NUMBER OF IMAGES:  1
  • FILM SPEED:  None
  • DATE/TIME:  02-13-2002 / 06:46:44 UTC
  • LOCATION:  Escondidio, San Diego County, California
  • TEMPERATURE:  48 degrees
  • HUMIDITY:  37%

 

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