Mars - CM 265 Deg.
DEC 14, 2009 - 11:30 UT

Sketch of Mars - CM 265 Degrees - DEC 14, 2009 - 11:30 UT

Sketch of Mars - CM 265° - Unfiltered
DEC 14, 2009 - 11:30 UT

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Sketch of Mars - CM 265° - Filter: Wratten #80A
DEC 14, 2009 - 11:30 UT

Observation Notes:

It has been a long time since my last Mars observation (DEC 21, 2005). At 11 arc seconds under soft seeing, details took some time to discern. The north polar cap was large and prominent and Syrtis Major was well placed on the following hemisphere. Hellas was bright, as was Arabia. I didn't detect any limb haze in the unfiltered view. The Wratten #80A did show some brighter spots as noted in the sketch above. I'm looking forward to some more good views of Mars as it approaches a maximum size of 14 arc seconds later in January.

SubjectMars - CM 265°
Position*Leo [RA: 09 30 53.3 / Dec: +17 53 39]
Angular Size*11 arcseconds
Date/TimeDEC 14, 2009, 04:30 AM MST
(DEC 14, 2009, 11:30 UT)
Observing Loc.Flagstaff, Arizona, USA - Home
InstrumentOrion SkyQuest XT8 Dobsonian (203 mm dia./1200 mm F/L)
Eyepieces/Mag.4 mm UO Orthoscopic (300X)
ConditionsP. Cloudy, cold
SeeingAnt. III
TransparencyMag 5.2 NELM
*SourcesStarry Night Pro Plus 5.8.2
British Astronomical Society Mars Maps


Dear Mr. Perez,

Your published drawing is very nice. In the Czech Republic (Europe) there was also several drawings made - We had different central meridian, about 300 - 350.

Vladimír Kocour

Vladimír, thank you. I'm glad you provide the link. I look forward to seeing what you observe in the coming weeks!


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This page contains a single entry by Jeremy Perez published on December 27, 2009 10:35 PM.

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