2003 04 14 DPk Note
Don PARKER's Images on 14 April 2003 at 09:11 & 10:34 GMT

  λ=168°Ls,   (ω=302°W ~ 322°W,   φ=13°S),   δ=8.3",   ι (phase angle)=42°

Seeing fair but improved as altitude increased (4-7, Pickering). Post cold front. Transparency 5m.
Wind WNW, 0-4 kts. Light dew. Altitude = 30-40°.

SPH conspicuous, bright in blue. NPC tiny.
NOTE: Strong (2+/3+) Violet Clearing -- seen on images and with W-47 filter visually.
Hellas dull. Yaonis, Serpentis-Charis and Helles D. dark, promninent.
Syrtis Major curved NW with Astusapis S., Astaboras, and Coloe Palus 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 17-26 images
  Red      (612 - 670nm) : 0.37s   1 image
  Green   (488 - 574nm) : 0.56s   1-9 images
  Blue      (392 - 508nm) : 2.00s   1-9 images
Images bias, flat and dark corrected.

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

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