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Mars Observation (January 18, 2010)

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#1 CarlosEH

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Posted 20 January 2010 - 03:41 AM

I was treated to an exceptional view of the planet Mars on January 18, 2010 (06:15-07:00 U.T.). I observed fine detail over the Martian surface (and atmosphere) extending between Amazonis on the preceding limb and Syrtis Major on the following limb. During moments of steady seeing the Hybaleus Extension-Aetheria region of Mars reminded me of the observation of the same region made in 1909 by the famous Greco-French astronomer Eugene M. Antoniadi (1870-1944) at which time he described the region as composed of dark knots and streaks. The region between Trivium Charontis and the Propontis Complex was also complex.

Date (U.T.) January 18, 2010
Time (U.T.): 06:15-07:00
CM (Degrees West): 234.4-245.3
Ls 039.5* (Mid-Northern Spring/Southern Autumn)
De: 16.1*, Ds 15.4*, Phase 99%, 13.9 arc-seconds
Instrument: 9-inch (23-cm) F/13.5 Maksutov-Cassegrain
Magnification: 295x and 443x
Filters (Wratten): 30 (Magenta) and 80A (Blue)
Seeing (1-10): 8, Antoniadi (I-V) II
Transparency (1-6): 5

Notes:
06:15 U.T. (CM 234.4*W, Wratten 30 (Magenta)): The North Polar Cap (NPC) was brilliant (10/10) with dusky to dull (4-5/10) streaks noted within it. I believe I noted the initial separation of the NPC remnant Lemuria (~205*W) along the southern border of the North Polar Cap. The NPC dark to dusky (3-4/10) collar was composed of Lemuria and Utopia/Casius. The Hybaleus Extension was visible on the central meridian (CM) and appeared to be composed of dark to dusky (3-4/10) streaks and condensations (knots). Elysium was visible preceding the CM with a very bright (8/10) cloud over the northeast (north-preceding) sector of Elysium. Trivium Charontis/Phlegra/Azania appeared dark to dusky (3-4/10) and mottled over the preceding border of Elysium. Nodus Alcyonius was visible following the CM as an elliptical ("teardrop") shaped albedo feature. Mare Cimmerium was visible preceding the CM and appeared dark to dusky (3-4/10). Hesperia was visible as a diagonal, bright (7/10) following the CM. Mare Tyrrhenum (3/-510) and Syrtis Minor (3/10) were visible following the CM. Syrtis Major was visible as thin, dark to dull (3-5/10) projection ("finger") over the following (morning) limb partially obscured by very bright to extremely bright (8-9/10) haze. The preceding (evening)/southern/following (morning) limbs appeared very to extremely bright (8-9/10).

The best of luck in your own observations of Mars.

Regards,
Carlos

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#2 CarlosEH

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Posted 20 January 2010 - 03:42 AM

07:00 U.T. (CM 245.3*W, Wratten 80A): The North Polar Cap (NPC) appeared brilliant (10/10). A very bright (8/10) cloud was visible over the northeast (N-p) sector of Elysium whereas the rest of it appeared bright (7/10). A bright to very bright (7-8/10) haze was visibly extending from the morning limb haze (8-9/10) over Aetheria. The preceding (evening)/southern/following (morning) limbs appeared very to extremely bright (8-9/10).

Carlos

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#3 CarlosEH

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Posted 20 January 2010 - 03:48 AM

A detailed sectional sketch of the North Polar Cap (NPC, 10/10) of Mars made on January 18, 2010 as noted above. Dark to dusky (3-4/10) steaks/condensations were noted within the NPC. The dark to dusky (3-4/10) collar surrounding the NPC is composed of Lemuria and Utopia/Casius.

Carlos

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#4 CarlosEH

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Posted 20 January 2010 - 03:50 AM

A labelled image of my Mars observation showing the major albedo features noted. I hope that this helps.

The best of luck observing Mars.

Carlos

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#5 frank5817

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Posted 20 January 2010 - 10:47 AM

Carlos,

Words cannot describe how awesome these sketches are. So much detail in the sketches and complete descriptions in the narrative. This is a very exciting post. :bow: :waytogo:

Frank :)

#6 Sol Robbins

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Posted 20 January 2010 - 11:19 AM

Carlos,

Words cannot describe how awesome these sketches are. So much detail in the sketches and complete descriptions in the narrative. This is a very exciting post. :bow: :waytogo:

Frank :)


Frank expresse my thoughts of these observations better than I could.

Thanks Carlos!

#7 Erix

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Posted 20 January 2010 - 11:22 AM

Fantastic work, Carlos! Thanks for sharing them!

#8 Houdini

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Posted 20 January 2010 - 11:35 AM

Awesome sketch.

Robert

#9 niteskystargazer

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Posted 20 January 2010 - 12:46 PM

Carlos,

:waytogo:, Beautiful Sketch. :)

:thanx:,

Tom

#10 jayscheuerle

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Posted 20 January 2010 - 12:47 PM

Great detail, Carlos... - j

#11 dweller25

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Posted 20 January 2010 - 01:06 PM

If I could catch half of the detail you have drawn I would be happy. Excellent.

#12 CarlosEH

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Posted 20 January 2010 - 01:28 PM

Thank you all for the kind compliments on my latest observation of Mars. I was very fortunate to have enjoyed steady seeing during my observing session. Our weather in South Florida has been very erratic lately. It was difficult to focus on making a rendering when such a view was presented. If an observer is patient the red planet can provide some exciting detail from time to time.

The best of luck in your own observations of Mars.

Carlos

#13 Mark9473

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Posted 20 January 2010 - 05:10 PM

The anticipation of first seeing your post title, then reading the opening paragraph, then scrolling down to the first sketch, was quite an experience!

#14 ericj

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Posted 20 January 2010 - 06:51 PM

Remarkable sketches Carlos and thanks for sharing them. It shows what a patient, experienced and gifted observer can do :bow:.

Best,

Eric Jamison

#15 CarlosEH

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Posted 20 January 2010 - 09:39 PM

Eric and Mark,

Thank you for the kind compliments on my latest observation of Mars. I always get excited when observing our ruddy neighbor. I am fortunate to have had good mentors (Charles F. Capen (Lowell Observatory), Don Parker, and Jeff Beish) in the past that showed me the art of planetary observing. The best of luck in your own observations of Mars.

Carlos

#16 Tommy5

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Posted 20 January 2010 - 09:41 PM

Great sketch of Mars, one of the best this season, lots of detail in the northern hemisphere, thanks for sharing.

#17 cildarith

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Posted 20 January 2010 - 09:47 PM

Amazing observation and sketches, Carlos!

#18 CarlosEH

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Posted 20 January 2010 - 11:28 PM

Eric and Tommy,

Thank you for the compliments on my latest Mars observation. I got lucky with the seeing as well as a good amount of detail visible at the time of my observation. The best of luck in your own observations.

Carlos

#19 Jeff Young

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Posted 21 January 2010 - 02:37 PM

Wow! Awesome detail there Carlos!

-- Jeff.

#20 CarlosEH

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Posted 21 January 2010 - 08:05 PM

Jeff,

Thank you for the compliment on my latest observation of Mars. I was also impressed with the amount of detail visible. I look forward to your excellent observations in the future.

Carlos






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