2003 04 18 DPk Note
Don PARKER's Images on 18 April 2003 at 10:23 ~ 10:44 GMT

  λ=170°Ls,   (ω=283°W,   φ=14°S),   δ=8.6",   ι (phase angle)=42°

Seeing poor (2-3, Pickering). Transparency 3-4m, frequent clouds.
No wind. No dew. Altitude = 39-40 °.

PARKER uses a 41 cm Newtonian working at f/55 with an eyepiece projection together with an SBIG ST9XE ccd camera, equipped with a CFW-8C filter wheel and RGB interference filters as well as a luminance Red RG610 Schott filter.

Integration times:
  RG610 (610 -1100nm): 0.12s 14-23 images
  Red      (612 - 670nm) : 0.30s    1 image
  Green   (488 - 574nm) : 0.50s    3 images
  Blue      (392 - 508nm) : 2.00s   9 images
Images bias, flat and dark corrected.

Observer: Donald C PARKER, Coral Gables,  FL.  USA


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