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Astrophotography and Sketching >> Sketching

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CarlosEH
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Reged: 01/19/05

Loc: Pembroke Pines, Broward County...
Mars Observation (June 10, 2010) new
      #3857750 - 06/10/10 04:51 PM Attachment (70 downloads)

I made an observation of Mars on June 10, 2010. Although the angular diameter was less than six arc-seconds (5.7” to be exact) I was able to detect albedo features when the seeing steadied for moments at a time.

Date (U.T.): June 10, 2010
Time (U.T.): 01:00-01:15
CM: 276.2*W-279.9*W
Ls 102.4*, De 23.1*, Ds 24.2*
p 90%, 5.7” (Diameter)
Instrument: 9-inch (23-cm) F/13.5 Maksutov-Cassegrain
Magnification: 295x and 388x
Filters (Wratten): 30 (Magenta) and 38A (Blue)
Seeing (1-10): 5-6, Antoniadi (I-V): III
Transparency (1-6): 4

Notes:
01:00 U.T. (CM 276.2*W, Wratten 30 (Magenta): The North Polar Cap (NPC) appears small and brilliant (10/10) with a dark (3/10) collar surrounding it. Lemuria and Cecropia appeared dark to dusky (3-4/10) and mottled. Utopia and Casius appeared dark to dusky (3-4/10; Casius appearing as a dark (3/10) “spike-like” albedo feature). Elyisum appeared bright to very bright (7-8/10) with a very bright (8/10) cloud over it. The Hyblaeus Extension appeared dark to dusky (3-4/10) following Elysium. Mare Cimmerium appeared dusky to dull (4-5/10) over the south-preceding limb. Electris and Eridania appeared shaded (6/10). Mare Tyrrhenum and Syrtis Minor appeared dark to dusky (3-4/10) on the central meridian (CM). Syrtis Major appeared as dark to dusky (3-4/10), mottled, wedge-shaped albedo feature following the CM. Hellas appeared very bright (8/10) with a cloud over it. Zephyria, Aeolis, Aethiopis, Aetheria, Isidis Regio, Neith Regio, Meroe Insula, and Aeria appeared bright (7/10). Extremely bright (9/10) evening limb haze (ELH), south polar limb haze (SPLH), and morning limb haze (MLH) were noted as well.

A digital image produced in Pixelmator.

Carlos


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CarlosEH
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Reged: 01/19/05

Loc: Pembroke Pines, Broward County...
Re: Mars Observation (June 10, 2010) new [Re: CarlosEH]
      #3857752 - 06/10/10 04:52 PM Attachment (54 downloads)

01:15 U.T (CM 279.9*W, Wratten 38A (Blue): The North Polar Cap (NPC) appears brilliant (10/10) and small. A very bright (8/10) cloud was noted over Elysium and Hellas. Extremely bright (9/10) evening limb haze (ELH), south polar limb haze (SPLH), and morning limb haze (MLH) was noted.

A digital image produced in Pixelmator.

Carlos


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Tommy5
Carpal Tunnel


Reged: 03/28/04

Loc: Chicagoland
Re: Mars Observation (June 10, 2010) new [Re: CarlosEH]
      #3858291 - 06/10/10 11:06 PM

Amazing sketch ,lots of detail for such a tiny orb.Thanks for posting my Mars views are just of a tiny reddish/orange disk.

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Sol Robbins
Carpal Tunnel
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Reged: 12/01/03

Re: Mars Observation (June 10, 2010) new [Re: Tommy5]
      #3858360 - 06/10/10 11:52 PM

Excellent as usual.

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Uwe Pilz
scholastic sledgehammer


Reged: 05/16/08

Loc: Leipzig, Germany
Re: Mars Observation (June 10, 2010) new [Re: Sol Robbins]
      #3858479 - 06/11/10 01:35 AM

Interesting what amount of detail is possible at a disc of less than 6". I am waiting for a clear and steady air for a next (last?) observation.

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frank5817
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Reged: 06/13/06

Loc: Illinois
Re: Mars Observation (June 10, 2010) new [Re: Sol Robbins]
      #3858480 - 06/11/10 01:37 AM

Carlos,

Beautiful sketching. I was observing at about the time you were and was treated to the same view for very brief intervals. I could not see the view long enough to sketch and at times I was seeing 3 overlapping Mars images as the mirror was cooling down.
Both of your drawings are amazing and thank you so much for sharing them.

Frank


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CarlosEH
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Reged: 01/19/05

Loc: Pembroke Pines, Broward County...
Re: Mars Observation (June 10, 2010) new [Re: frank5817]
      #3858600 - 06/11/10 04:39 AM

Frank, Sol, Tommy, and Uwe

Thank you all for the very kind compliments on my latest obervations of Mars. I did not expect to see much detail over the small disk of Mars but patience at the eyepiece allowed me to obtain glimpses of the features drawn. I was fortunate to have expeienced brief moments of steady seeing to have been able to observe the detail rendered. I hope that you all are able to get at least one good view of Mars before too long.

Carlos


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Special Ed
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Reged: 05/18/03

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Re: Mars Observation (June 10, 2010) new [Re: CarlosEH]
      #3858692 - 06/11/10 07:55 AM

Superlative observation and drawings, Carlos. The NPC appears to be hanging in there. It's funny that with all the scrutiny that Mars has received this apparition from imagers and us sketchers, there have been lots of clouds but very few reports of dust.

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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: Mars Observation (June 10, 2010) new [Re: Special Ed]
      #3859012 - 06/11/10 11:55 AM

What can I say about this sketches? Impressive as always!

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Paul G. Abel
sage


Reged: 01/28/10

Loc: UK
Re: Mars Observation (June 10, 2010) new [Re: Special Ed]
      #3859018 - 06/11/10 11:57 AM

Two wonderful drawings, Carlos and no doubt extremley accurate!

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dweller25
Pooh-Bah


Reged: 08/30/07

Loc: Lancashire, UK
Re: Mars Observation (June 10, 2010) new [Re: Paul G. Abel]
      #3859126 - 06/11/10 01:14 PM

Very impressive Carlos.

I enjoyed your drawing, for me Mars is now lost in the trees.

The change to the NPC over the last few months has been amazing.


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Kris.
Carpal Tunnel
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Reged: 09/16/04

Loc: Belgium
Re: Mars Observation (June 10, 2010) new [Re: dweller25]
      #3859470 - 06/11/10 04:52 PM

wow i missed this one, excellent sketch Carlos. i think the Elysium and Hyblaeus extension area is a great catch with mars so small now! i lost that some time ago.

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CarlosEH
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Re: Mars Observation (June 10, 2010) new [Re: Kris.]
      #3860120 - 06/12/10 01:14 AM

Dweller, Jef, Kris, Michael, and Paul

Thank you all for your very kind compliments on my latest observation of Mars. I too was impressed by the amount of detail visible at such a small apparent diameter. Syrtis Major and Utopia/Casius were noted consistently in the eyepiece whereas the other albedo features became visible as the seeing steadied, including Elysium and the Hyblaeus Extension. It has been interesting to watch the North Polar Cap (NPC) shrink in size over the current apparition. I am very proud of all the members who have posted observations of Mars this apparition. They have all done an outstanding job.

Carlos


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mike bacanin
Carpal Tunnel
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Reged: 03/19/07

Re: Mars Observation (June 10, 2010) new [Re: CarlosEH]
      #3860307 - 06/12/10 07:36 AM

Carlos,

An outstanding observation considering the planet's very small angular diameter. It shows what a combination of a very fine planetary instrument, and years of experience reveals.Thank you for sharing it.

Mike


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CarlosEH
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Reged: 01/19/05

Loc: Pembroke Pines, Broward County...
Re: Mars Observation (June 10, 2010) new [Re: mike bacanin]
      #3861753 - 06/13/10 05:36 AM

Mike,

Thank you for the compliment on my latest observation of Mars. I was fortunate to experience a good night for observing Mars. The best of luck to you and your family and in your own observations.

Carlos


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Rick Woods
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Reged: 01/27/05

Loc: Inner Solar System
Re: Mars Observation (June 10, 2010) new [Re: CarlosEH]
      #3866811 - 06/15/10 05:23 PM

Carlos,
I had an exceptional night of seeing on 6/10 too. Mars was very low, almost below the observatory wall; but I think I actually made out a little of the detail you showed (I had already seen your sketch at the time).

Mars: Good to the last drop!


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CarlosEH
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Reged: 01/19/05

Loc: Pembroke Pines, Broward County...
Re: Mars Observation (June 10, 2010) new [Re: Rick Woods]
      #3872896 - 06/18/10 07:39 PM

Rick,

It has been a fun Mars apparition. To be able to see detail at such a small apparent diameter is not easy. The best of luck in your future observations.

Carlos


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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: Mars Observation (June 10, 2010) [Re: CarlosEH]
      #3880013 - 06/22/10 03:42 PM

Carlos, congratulations with your ASOD!

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