NGC 3169 and NGC 3166

Click on image for larger version.

Located in Sextans (practically a self-referential constellation since you basically need a Sextant to find the stars...) NGC 3169 (to the upper right) and NGC 3166 (in the lower left) make a very pretty pair of galaxies. They are truly near to one another and affect each other's structure. Most notably it appears that NGC 3166 has quieted down in terms of star formation; while NGC 3169 continues to produce new stars as indicated by the bluish spiral arms and pink star forming regions. NGC 3169 and 3166 are separated by a mere 50,000 light years (half the diameter of our own galaxy). These galaxies dance some 60 million light years in the distance.


20in RC Optical Systems telescope operating at f/8.4
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 = 90 minutes binned 1x1
Red = 20 minutes binned 2x2
Green = 20 minutes binned 2x2
Blue = 20 minutes binned 2x2

  • 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.

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

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    Updated: 02/28/2004