2003 0703 DPk Note
Don PARKER's Images on 3 July 2003
at 09:10~ 09:26 GMT

  λ=215°Ls,   (ω=256°~ 262°W,   φ=21°S),   δ=17.0",   ι (phase angle)=36°

Seeing good (7-8, Pickering). Transparency 4-4.5m with slight haze. Wind SSE 0-2 kts. No dew.
Altitude = 51-50°.

Dust cloud in Yaonis has expanded and brightened. Finger of dust now obscuring northern Yoanis and extends into Hellespontus.
Possible spread northeastward into south central Tyrrhenum. Eastern Tyrrhenum, however, is less obscured than on 2 July.
Dust clouds remain bright in green light. In green note bright "swirl" around eastern tip of Tyrrhenum into Hesperia. Little recognizable detail on the floor of Hellas. Violet clearing stronger than on 2 July (2+).

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

Integration times:
  Red      (610 -1100nm) : 0.16-0.17   1-2 images   (RG610, NO IR Rejection)
  Green   (488 - 574nm) :  0.39s   6 images
  Blue      (392 - 508nm) : 1.25s   7-8 images
Images bias, flat and dark corrected.

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

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