Mars – October 21, 2005 – 07:30-08:30 UT

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East and West noted in the sketch are Martian E/W, not celestial E/W.

Observation Notes:
During the first half of this observation, the sky was reasonably clear, but the scope was still cooling down. A bit later, when the seeing began to improve, a thin smear of horizon-to-horizon clouds moved in. Everything got very muddy. Bah! I was hunting for evidence of a dust storm moving south out of Chryse. I think I spotted a notch it might have taken out of Aurorae Sinus. The North Polar Hood was very evident and notched.

Subject Mars – Central Meridian: 60°
Classification Planet
Position* Taurus [RA: 03:08:03 / Dec: +16:24:43]
Size* 20.12″ (Equatorial diameter)
Brightness* -2.2
Date/Time October 21, 2005 – 12:30 AM to 1:30 AM
(October 21, 2005 – 07:30 to 08:30 UT)
Observing Loc. Flagstaff, AZ – Home
Instrument Orion SVP 6LT Reflector (150 mm dia./1200 mm F/L)
Eyepieces/Mag. 10 mm Sirius Plössl+ 2X Barlow (240X)
Filters #21A Orange, #80A Blue
Conditions High thin cloud layer, cool
Seeing Ant. III
Transparency Unmeasured, but basically horrible
*Sources Orion’s The Sky Astronomy Software

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