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Astrophotography and Sketching >> Sketching

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CarlosEH
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Loc: Pembroke Pines, Broward County...
Mars Observation (February 7, 2010) new
      #3613259 - 02/08/10 06:03 PM Attachment (73 downloads)

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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CarlosEH
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Re: Mars Observation (February 7, 2010) new [Re: CarlosEH]
      #3613262 - 02/08/10 06:04 PM Attachment (47 downloads)

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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CarlosEH
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Re: Mars Observation (February 7, 2010) new [Re: CarlosEH]
      #3613267 - 02/08/10 06:05 PM Attachment (44 downloads)

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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Special Ed
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Re: Mars Observation (February 7, 2010) new [Re: CarlosEH]
      #3613439 - 02/08/10 07:45 PM

Carlos,

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


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Sol Robbins
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Reged: 12/01/03

Re: Mars Observation (February 7, 2010) new [Re: Special Ed]
      #3613713 - 02/08/10 10:24 PM

Excellent!

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frank5817
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Re: Mars Observation (February 7, 2010) new [Re: Sol Robbins]
      #3613950 - 02/09/10 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.

Frank


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dweller25
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Reged: 08/30/07

Loc: Lancashire, UK
Re: Mars Observation (February 7, 2010) new [Re: frank5817]
      #3613985 - 02/09/10 01:50 AM

Superb carlos, always a pleasure to view your drawings.

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CarlosEH
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Re: Mars Observation (February 7, 2010) new [Re: dweller25]
      #3614226 - 02/09/10 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


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rerun
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Reged: 03/22/09

Loc: Germany Mülheim an der Ruhr
Re: Mars Observation (February 7, 2010) new [Re: CarlosEH]
      #3614466 - 02/09/10 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


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markseibold
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Reged: 01/19/08

Loc: Portland Oregon
Re: Mars Observation (February 7, 2010) new [Re: CarlosEH]
      #3614533 - 02/09/10 11:21 AM

Carlos

Beautiful rendering from your observation of Mars.

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


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mathteacher
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Re: Mars Observation (February 7, 2010) new [Re: markseibold]
      #3614600 - 02/09/10 11:51 AM

Beautiful work again, sir!

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mikesemmler
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Reged: 06/01/09

Re: Mars Observation (February 7, 2010) new [Re: mathteacher]
      #3614756 - 02/09/10 01:08 PM

Thats a great job again

Michael


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CarlosEH
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Re: Mars Observation (February 7, 2010) new [Re: mikesemmler]
      #3616253 - 02/10/10 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.jpl.nasa.gov/MPF/mpf/marswatch/marsnom.html (ALPO Mars map)
http://alpo-j.asahikawa-med.ac.jp/Latest/map123.JPG (Ebisawa Mars map)

Carlos


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rerun
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Reged: 03/22/09

Loc: Germany Mülheim an der Ruhr
Re: Mars Observation (February 7, 2010) new [Re: CarlosEH]
      #3616620 - 02/10/10 11:32 AM

Hallo Carlos,

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

CS

Markus


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Tommy5
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Reged: 03/28/04

Loc: Chicagoland
Re: Mars Observation (February 7, 2010) new [Re: rerun]
      #3617490 - 02/10/10 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.

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JayinUTModerator
I'm not Sleepy
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Reged: 09/19/08

Loc: Utah
Re: Mars Observation (February 7, 2010) new [Re: Tommy5]
      #3617795 - 02/10/10 10:53 PM

Carlos,

Tremendous! Detail is just perfect.


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niteskystargazer
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Reged: 10/05/09

Loc: 41-43'-28" N 87-42'-39" W
Re: Mars Observation (February 7, 2010) new [Re: CarlosEH]
      #3618605 - 02/11/10 12:11 PM

Carlos,

, nice sketch

,

Tom


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CarlosEH
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Re: Mars Observation (February 7, 2010) [Re: niteskystargazer]
      #3619862 - 02/11/10 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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