October 12, 2005
Mars - October 13, 2005 - 06:00-06:45 UT
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East and West noted in the sketch are Martian E/W, not celestial E/W.
Observation Notes:
I wanted to catch Solis Lacus this evening, and it was in a good position. Seeing was pretty shoddy, and I was having some contrast issues with my 10 mm eyepiece. The South Polar Cap showed up intermittently, as a bright button with a slight collar around it. I wasn't able to see the polar hood like I did the past couple observations. The morning limb had a thin border of haze that thickened around what I think is Zephiria. I thought it was interesting that the evening limb displayed a very wide, thin haze. I hadn't noticed this before. It seemed thickest around and below Aurorae Sinus and edging into Tharsis. Most of the sketch was done without filters. But then I inserted the #21A Orange filter which brought out some lighter albedo features in the northern hemisphere. The #80A filter really popped out the vast amount of haze on the evening limb and the thin but still substantial haze on the morning side. While I noticed the haziness as a light smoky gray on the evening side, I used blue in the sketch to emulate what the #80A filtered view threw at me.
| Subject | Mars - Central Meridian: 100° | |
| Classification | Planet | |
| Position* | Taurus [RA: 03:21:05 / Dec: +16:38:46] | |
| Size* | 19.4" (Equatorial diameter) | |
| Brightness* | -1.98 | |
| Date/Time | October 12, 2005 - 11:00 - 11:45 PM MST (October 13, 2005 - 6:00 - 6:45 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) #21A Orange Filter; #80A Blue Filter | |
| Conditions | Clear, calm, 42° F | |
| Seeing | Ant. III | |
| Transparency | Unrecorded | |
| *Sources | Orion's The Sky Astronomy Software British Astronomical Society Mars Maps |
Posted by Jeremy at October 12, 2005 11:00 PM .
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