2003 04 16 DPk Note
Don PARKER's Images on 16 April 2003 at 10:20 & 10:40 GMT

  λ=169°Ls,   (ω=300°W, 304°W,   φ=13°S),   δ=8.4",   ι (phase angle)=42°

Seeing fairly good (6-7, Pickering). Transparency 5m.
No wind. Heavy dew. Altitude = 39-41 °.

SPH conspicuous, bright in blue. NPC tiny.
2+/3 Violet Clearing again noted. SPH still very bright in green and blue. Possible "Lifesaver Effect."
Hellas dull, normal aspect for season. Thin AM limb arc. PM cloud in Libya.
Yaonis Fr. and Hellespontus, and Depressiones Hellesponticus very dark. Serpentis inconspicuous.
N. tip of Syrtis Major blunted due to Nili Pons and Astusapis S. Astaborae Fons, Coloe P. visible.

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 22-32 images
  Red      (612 - 670nm) : 0.28s    1 image
  Green   (488 - 574nm) : 0.45s    5 images
  Blue      (392 - 508nm) : 1.80s   9 images
Images bias, flat and dark corrected.

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

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