NGC 3642

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Caption to be written....

Equipment

16in RC Optical Systems telescope Operating at f/8.8
Paramount ME Robotic Telescope Mount
SBIG ST10XME CCD camera with color filter wheel

L R G B color production was used to create this image.

Luminance = 180 minutes binned 1x1
 Red = 30 minutes binned 2x2
 Green = 30 minutes binned 2x2
 Blue = 30 minutes binned 2x2
  • Most of this data was taken through intermittant clouds. The effective exposure time is therefore much less than the total integration time of 3 hours for the luminance.
  • The brightening in the upper left is due to the fact no flat field calibration frames were used.
  • The AO-7 unit was used to acquire this image.
  • Two iterations of L-R deconvolution (sharpening) algorithm using CCDsharp were applied to the luminance image.

  • Digital Development (DDP) via Maxim/DL was also used in order to display the the very dim and very bright details of the image simultaneously.

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    Minimum credit line: Adam Block/NOAO/AURA/NSF

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    Updated: 12/16/02