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Subject: Comet 17P/Holmes
Author: Carlos Gouveia
Nationality: Portuguese
Scope: FLT 110 Triplet APO F/7.0
Instruments:
  • Losmandy G11 + Gemini
  • SBIG ST2000XM + CFW10 filters
Exposure time:
  • (H-alpha)-1x2 minutes + 3x5 minutes + 1x10 minutes.
  • (Red filter)-3x5 minutes + 1x10 minutes.
  • (Green filter)-3x5 minutes + 1x10 minutes.
  • (Blue filter)-4x5 minutes + 1x10 minutes.
Place & Seeing: Palmela
Date: 04-11-2007
Remarks: With the narrow-band filter H-alpha (luminance) + the filters RGB.
Programs used for processing were the following: Maxim DL and Photoshop CS2 without darks and or flats.

 

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