2003 0910 DPk Note
Don PARKER's Images on 10 September 2003
at 03:50~ 04:48 GMT

  λ=258°Ls,   (ω=271°, 284°W,   φ=19°S),   δ=24.3",   ι=12°

Seeing generally poor (3 Pickering) initially but improved (7) late. Transparency 4 m, frequent clouds.
Wind NE 6-12 kts. Altitude = 47-48°. No dew.

Violet Clearing = 1+ visually and on CCD blue images. Cloud band SE of NP Hood on 8 Sept now barely detectable. AM limb clouds -- non-rotating.
Note: Floor of Hellas has changed; normal albedo features (Zea Lacus, Peneus, etc.) no longer visible -- replaced by dark streaks.

PARKER uses a 41 cm Newtonian working at f /59 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) : 0.16-0.17s   2-4 images   (RG610, NO IR ejection)
  Green   (488 - 574nm) :  0.50s   7-9 images
  Blue      (392 - 508nm) :  2.00s   6-11 images
Images bias, flat and dark corrected.

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

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