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M51  (Whirlpool Galaxy)  in  Canes  Venatici

  This low-resolution film image was taken in 2000. Compare the resolution with the newer CCD image.

  Date   2000
  Scope

  Astro-Physics 130 f12 (2x Barlow) on Losmandy G-11 mount, with ST-4 guider on a 

  separate guidescope. 

  Exposures 

  2 images, color negative ISO 400 film, 60 minutes each, stacked.

  Processing   

  Images combined in RegiStar. 

  Imported into Photoshop, stretched with levels and curves, and sharpened and blurred.

 

 

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