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Subject: M42
Author: Carlos Gouveia
Nationality: Portuguese
Scope: FLT 110 Triplet APO F/7.0
Instruments:
  • Losmandy G11 + Gemini
  • SBIG ST2000XM + CFW10 filters
Exposure time: The time to H-alpha served as luminance and green, the SII as red and finally OIII as blue.
It was used for processing the programs Maxim DL and Photoshop, without darks and or flats.
  • H-alpha: 6x5 minutes + 5x3 minutes of exposure.
  • SII: 9x5 minutes of exposure.
  • OIII: 9x5 minutes of exposure.
Place & Seeing: Palmela
Date: 27-12-2007
Remarks: with narrow-band filters and utilized the Hubble palette.

 

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