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Mars Observation (February 7, 2010)

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#1 CarlosEH

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Posted 08 February 2010 - 06:03 PM

I made an observation of Mars on February 7, 2010 under average seeing conditions (5/10, with brief moments of 7/10). The amount of detail noted was impressive and difficult to render at times due to the complexity of the features noted. I welcome any comments that you may have on my observation.

Date (U.T.): February 7, 2010
Time (U.T.): 03:30-04:30
CM (Degrees West): 019.5*-034.2*
Ls 048.3*, De 013.5*, Ds 018.3*, p 100%, 13.9"
Instrument: 9-inch (23-cm) F/13.5 Maksutov-Cassegrain
Magnification: 295x and 388x
Filters (Wratten): 30 (Magenta) and 80 (Blue)
Seeing (1-10): 5 (moments of 7), Antoniadi (I-V): III
Transparency (1-6): 5

Notes:
03:45 U.T. (CM 023.2*W, Wratten 30 (Magenta)): The North Polar Cap (NPC) was brilliant (10/10) and has reduced in size (diameter) significantly compared to previous observations. The NPC was surrounded by a dark (3/10) composed of Ortygia and Mare Boreum. Mare Acidalium is visible following the central meridian (CM) and appears dark to dusky (3-4/10) with condensations noted within. Achillis Pons appeared bright (7/10) with a haze overlying it. Niliacus Lacus appeared dark to dusky (3-4) with Nilokeras (3-4/10) projecting from it's following border. Idaeus Fons appeared as a dark to dusky (3-4/10) "knob" projecting northward from Nilokeras. Lunae Lacus appears to be obscured by a very bright (8/10) haze over the following (morning) limb. Chryse-Xanthe appears bright (7/10) without detail visible within it. Xenius Fretum appears over Cydonia (7/10) as a triangular-shaped dusky (4/10) albedo feature. Sinus Sabaeus and Sinus Meridiani appear dark to dusky (3-4/10) over the South preceding (Sp) limb. Margaritifer Sinus appears a dark to dusky (3-4/10) triangular-shaped albedo feature on the CM with Oxia Palus (4/10) visible south of it. Mare Erythraeum appeared dark to dusky (3-4/10) and mottled with Pyrrhae Regio as a bright (7/10) area over it's center. Aurorae Sinus appeared dark to dusky (3-4/10) towards the following limb. The preceding (evening) and southern limb appeared very bright (8/10). The following (morning) limb appeared very to extremely bright (8-9/10).

A digital imaged produced in Pixelator.

Carlos

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#2 CarlosEH

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Posted 08 February 2010 - 06:04 PM

04:15 U.T. ((CM 021.8*W, Wratten 80 (Blue)): The North Polar Cap (NPC) appeared brilliant (10/10). Morning (preceding) limb haze appeared very bright (8/10). Southern limb haze (SLH) appeared very bright (8/10). Morning (following) limb haze (MLH) appeared very to extremely bright (8-9/10). Albedo features were visible without much difficulty at this wavelength.

A digital image produced in Pixelmator.

Carlos

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#3 CarlosEH

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Posted 08 February 2010 - 06:05 PM

I have labeled the major albedo features visible in my Mars observation. I hope that this helps.

The best of luck in your own observations of Mars.

Carlos

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#4 Special Ed

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Posted 08 February 2010 - 07:45 PM

Carlos,

Beautifully done. I especially like the blue wavelength. You are truly The Man. :bow: :grin:

#5 Sol Robbins

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Posted 08 February 2010 - 10:24 PM

Excellent!

#6 frank5817

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Posted 09 February 2010 - 01:02 AM

Carlos,

Look at that reduced North polar cap. Beautiful attention to small detail. Truly amazing for an evening of average seeing. I agree with Michael's last comment above. :bow: :cool:

Frank :)

#7 dweller25

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Posted 09 February 2010 - 01:50 AM

Superb carlos, always a pleasure to view your drawings.

#8 CarlosEH

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Posted 09 February 2010 - 08:26 AM

Dweller, Frank, Michael, and Sol

Thank you all for the kind compliments on my latest observations of Mars. This has been an exciting and productive Mars apparition for me thus far. I have been able to develop my digital technique on the Moon and planets. The North Polar Cap (NPC) has "shrunk" (sublimated) a significant amount over the past few weeks. The best of luck in your own observations of Mars.

Carlos

#9 rerun

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Posted 09 February 2010 - 10:51 AM

Carlos,

so many details,two wonderful sketches of Mars.With your excellent labeling,I use it always to identify the places on Mars I don't know,yet.


CS

Markus

#10 markseibold

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Posted 09 February 2010 - 11:21 AM

Carlos

Beautiful rendering from your observation of Mars. :bow: :bow: :bow:

I think your excellent labeling of the surface features should go into a current display like Spaceweather, say a series of several prominent hemispheres to show the general observers in a daily frequented site like Spaceweather, so as to inform them what they could be seeing with medim telescopes and some exerted and patient observing while Mars is still close.

Mark

#11 mathteacher

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Posted 09 February 2010 - 11:51 AM

Beautiful work again, sir!

#12 mikesemmler

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Posted 09 February 2010 - 01:08 PM

Thats a great job again

Michael

#13 CarlosEH

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Posted 10 February 2010 - 06:42 AM

Ging-Li, Mark, Markus, and Michael

Thank you all for the compliments on my latest observations of Mars. I am glad that the labeling of the albedo features helps to better understand the features being observed at this time. I will see what I can do about a series of hemispherical maps of Mars but there exists several good maps already.

Links;
http://marsprogram.j...ch/marsnom.html (ALPO Mars map)
http://alpo-j.asahik...test/map123.JPG (Ebisawa Mars map)

Carlos

#14 rerun

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Posted 10 February 2010 - 11:32 AM

Hallo Carlos,

thank you for the links of Marsmaps ,very detailed maps of Mars,very useful for me.

CS

Markus

#15 Tommy5

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Posted 10 February 2010 - 07:50 PM

Wow, each one of your digital sketches gets better and better,great accurate detail thanks for keeping us up to date on Mars until our skies clear.

#16 JayinUT

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Posted 10 February 2010 - 10:53 PM

Carlos,

Tremendous! Detail is just perfect.

#17 niteskystargazer

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Posted 11 February 2010 - 12:11 PM

Carlos,

:waytogo:, nice sketch :)

:thanx:,

Tom

#18 CarlosEH

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Posted 11 February 2010 - 11:29 PM

Jay, Tom, and Tommy

Thank you for the compliments on my latest observations of Mars. I think that practice with digital media and decent seeing conditions has allowed me to improve my renderings.

Markus- You are welcome. I hope that the Mars maps help you in your observations.

Carlos






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