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Astrophotography and Sketching >> Sketching

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frank5817
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Reged: 06/13/06

Loc: Illinois
Mars April 19 2014 new
      #6475536 - 04/19/14 01:26 PM Attachment (34 downloads)

Conditions were poor to average for viewing and sketching Mars.
Mars is now at 15″ of arc and 0.62 A.U. from us. 99.4% of the disk is illuminated and shining at visual magnitude -1.4. The central meridian of Mars was centered at about 41.87 at the beginning time of the sketch.
Sinus Meridiani was visible near the limb on the preceding side. On this side clouds were visible over Eden. Mare Erythraeum, Margaritifer sinus and Aurorae sinus were all detectable to the south (up). Lighter Chryse could be seen at the equator with Niliacus Lacus, Mare Acidalium and Nilokeras blended together. Tharsis was under clouds on the following limb. The north polar cap is small in size and set apart by Mare Boreum.


Equipment and Sketching:

This is an eyepiece sketch made with a HB graphite pencil, blending stumps, White Pearl eraser on white sketching paper. The colorized sketch made indoors was completed using ground shavings of colored pencils (blue, orange, yellow, white)
Date 04/19/2014 Time 05:00 - 05: 48 UT
Telescope: 13.1 inch f/5.9 Dobsonian and 9mm eyepiece 218x with a single polarizing filter and Neodymium filter used together; An Equatorial platform was also used
Temperature: 3C (37F)
Clear, breezy
Transparency 4/5
Seeing: Antoniadi IV -III

Frank McCabe


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frank5817
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Reged: 06/13/06

Loc: Illinois
Re: Mars April 19 2014 new [Re: frank5817]
      #6475540 - 04/19/14 01:26 PM Attachment (13 downloads)

Colorized

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Ernest_SPB
sage


Reged: 11/13/10

Loc: St.-Petersburg, Russia
Re: Mars April 19 2014 new [Re: frank5817]
      #6475597 - 04/19/14 01:56 PM

Great!

Frank. Could you, please, describe effect from used polarizing filter?


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Tommy5
Carpal Tunnel


Reged: 03/28/04

Loc: Chicagoland
Re: Mars April 19 2014 new [Re: Ernest_SPB]
      #6475625 - 04/19/14 02:08 PM

very nice Mars sketch, glad to see we got a break in the weather.

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CarlosEH
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Reged: 01/19/05

Loc: Pembroke Pines, Broward County...
Re: Mars April 19 2014 new [Re: Tommy5]
      #6475860 - 04/19/14 04:26 PM

Frank,

Excellent observations of Mars. You got a good view of Sinus Meridiani, Mare Erythraeum, and Mare Acidalium. The North Polar Cap (NPC) is small. Thank you for sharing it with us all.

Regards,
Carlos


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frank5817
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Reged: 06/13/06

Loc: Illinois
Re: Mars April 19 2014 new [Re: CarlosEH]
      #6476095 - 04/19/14 06:58 PM

Ernest, Tom and Carlos,

Thanks for your kind comments.
--
Ernest - The polarizing filter helped reduce some of the planet brightness.

Frank


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kraterkid
Post Laureate
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Reged: 03/07/05

Loc: Jacumba, California
Re: Mars April 19 2014 new [Re: CarlosEH]
      #6476100 - 04/19/14 07:00 PM

Great sketch of Mars just a bit past opposition Frank! Seeing all the wonderful Mars sketches that have been posted in this forum lately is giving me the motivation to try one of my own. Excellent drawing!

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Ed D
Carpal Tunnel
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Reged: 04/30/10

Loc: Sunny South Florida
Re: Mars April 19 2014 new [Re: kraterkid]
      #6476294 - 04/19/14 08:53 PM

Beautiful sketches, Frank. I like both versions - B&W and color.

Ed D


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Aquarellia
professor emeritus


Reged: 10/27/12

Loc: Provence, France
Re: Mars April 19 2014 new [Re: Ed D]
      #6476636 - 04/20/14 01:04 AM

Excellent sketch and observation ! Thank you for this Frank.

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Uwe Pilz
scholastic sledgehammer


Reged: 05/16/08

Loc: Leipzig, Germany
Re: Mars April 19 2014 new [Re: Aquarellia]
      #6476677 - 04/20/14 01:43 AM

Great skecth. It si rewarding to observe Mars in the next day when it is near its largest.

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frank5817
Postmaster
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Reged: 06/13/06

Loc: Illinois
Re: Mars April 19 2014 new [Re: Uwe Pilz]
      #6477098 - 04/20/14 10:48 AM

Rich, Ed, Michel and Uwe,

Thank you gentlemen for your nice comments about my sketch and drawing.

Frank


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dweller25
Pooh-Bah


Reged: 08/30/07

Loc: Lancashire, UK
Re: Mars April 19 2014 new [Re: frank5817]
      #6477214 - 04/20/14 11:47 AM

Frank that is an excellent observation and drawing.

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niteskystargazer
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Reged: 10/05/09

Loc: 41-43'-28" N 87-42'-39" W
Re: Mars April 19 2014 new [Re: frank5817]
      #6478703 - 04/21/14 09:40 AM

Frank,

Very good sketch of Mars on Apr. 19th .

CS,KLU,

,

Tom


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kenrenard
Carpal Tunnel


Reged: 12/13/12

Loc: Dunmore, PA
Re: Mars April 19 2014 new [Re: niteskystargazer]
      #6480618 - 04/22/14 06:52 AM

Frank,
Nice work. It looks like the Mars bug has bit us all!

Ken


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frank5817
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Reged: 06/13/06

Loc: Illinois
Re: Mars April 19 2014 new [Re: kenrenard]
      #6481056 - 04/22/14 11:52 AM

David, Tom and Ken

Thank you all guys for your encouraging words.
It is kind of sketch now or wait two more years to see Mars up close.

Frank


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Kris.
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Reged: 09/16/04

Loc: Belgium
Re: Mars April 19 2014 [Re: frank5817]
      #6482604 - 04/23/14 04:58 AM

very nice sketch(es) Frank, you're right about sketching now, we've been waiting so long for it to reach this diameter after all.

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