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Astrophotography and Sketching >> Sketching

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Kris.
Pooh-Bah


Reged: 09/16/04
Posts: 1431
Loc: Belgium
Mars 15/08/09
      #3273674 - 08/15/09 05:01 AM

here's a sketch done this morning using my 12" dob. seeing was fair but Mars was showing it's 'boring' side.

not very much recorded, Mare Cimmerium was the only dark feature i could see across the globe. the area south of Mare Cimmerium (Eridiani & Ausonia i believe) was a brighter yellow in color than the more orange dessert on the northern hemisphere (Elysia-um & Aetheria?).
i could however for the first time clearly see the north polar hood, it even had a faint bluish/grey teint.
two bright patches of haze or limb brightening were also seen at the edge of the disk.

i used no filters, but during the whole observation i made use of an apodizing mask, this has worked miracles on Jupiter and, to a lesser extent, improves the view of mars as well!

good luck with your observations!



--------------------
Kris

To be old & wise, you first gotta be young & stupid

8" dob
AstroTech 66ED/APO
TAL 120 newt.

my CN sketch & picture gallery


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dweller25
sage


Reged: 08/30/07
Posts: 424
Loc: 53.6°N - UK
Re: Mars 15/08/09 new [Re: Kris.]
      #3273896 - 08/15/09 10:06 AM

Very nice Kris, well done.

--------------------

Be true to your teeth and they will never be false to you.


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Tommy5
Carpal Tunnel


Reged: 03/28/04
Posts: 1986
Loc: Chicagoland
Re: Mars 15/08/09 new [Re: dweller25]
      #3273923 - 08/15/09 10:26 AM

Nice detail, i heard a lot of good things about the simple apodizing mask.

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JayinUT
I'm not Sleepy
*****

Reged: 09/19/08
Posts: 1295
Loc: Utah
Re: Mars 15/08/09 new [Re: Tommy5]
      #3274195 - 08/15/09 01:25 PM

Kris,

Your making me want to study Mars in detail. Thanks for sharing and pipping my interest in this planet.

--------------------
Jay in Utah
---------------------------
Historian Donald Osterbrock called him (Edward Barnard) an "observe-aholic," because Barnard, happiest when he could spend all night observing, was moody and difficult when the sky was cloudy.



My Blog


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mike bacanin
scholastic sledgehammer
*****

Reged: 03/19/07
Posts: 758
Loc: united kingdom
Re: Mars 15/08/09 new [Re: JayinUT]
      #3274462 - 08/15/09 04:03 PM

Kris,

That is a beautiful rendering of Mars.

Mike


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frank5817
Post Laureate
*****

Reged: 06/13/06
Posts: 4499
Loc: Illinois
Re: Mars 15/08/09 new [Re: mike bacanin]
      #3274486 - 08/15/09 04:27 PM

Kris,

Your Mars sketch is beautiful. With Mars still a long way off you are creating some nice sketches and this is the best one yet.

Frank

--------------------
my gallery


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kraterkid
Post Laureate
*****

Reged: 03/07/05
Posts: 4658
Loc: Jacumba, California
Re: Mars 15/08/09 new [Re: frank5817]
      #3275173 - 08/16/09 12:46 AM

Kris your Mars sketches are simply top notch! Very subtle and atmospheric limb glow and terminator. Wonderful color over the entire Martian disc. Lovely albedo!

--------------------
Rich



My CN Gallery




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Dee
professor emeritus
*****

Reged: 03/12/06
Posts: 738
Loc: Ireland
Re: Mars 15/08/09 new [Re: kraterkid]
      #3275356 - 08/16/09 07:42 AM

That is really really cool, it is so difficult to sketch Mars >
I got up very early this morning to sketch the Moon and Mars close to each other , but a million clouds prevented that happening.

Lucky you

Dee


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Shannon s
super member


Reged: 06/21/09
Posts: 165
Loc: Bartow FL.
Re: Mars 15/08/09 new [Re: Dee]
      #3275387 - 08/16/09 08:34 AM

Very nice Kris. Very faint detail caught.

--------------------
4.5" & 12" Reflectors
5" Maksutov
Astroview mount
Orion SSDSI
7x50 Binos
A box of Eps


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phxbird
super member


Reged: 12/24/07
Posts: 192
Loc: New Mexico, USA
Re: Mars 15/08/09 new [Re: Shannon s]
      #3275470 - 08/16/09 10:02 AM

I have not even tried to sketch Mars lately. Since it is only 5" I did not think I could see enough to sketch. Now I will have to rethink this philosophy! Very nice work. What medium did you use? Very good coloring and reproduces the subtle features you see through the eyepiece very well!

--------------------
"Big Gun" Celestron 6" Refractor
"The Bargain Bucket" 8" Dob
"X-Factor" Meade ETX 90 EC
"Short Round" Orion ST 80mm
"Dimestore" 60 mm Meade
Celestron AS-GT Mount
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Kris.
Pooh-Bah


Reged: 09/16/04
Posts: 1431
Loc: Belgium
Re: Mars 15/08/09 new [Re: phxbird]
      #3275700 - 08/16/09 12:30 PM

thanks for the comments guys!

Jay, i'm looking forward to your observations!

Dee, i'm sorry to hear bad weather prevented you from sketching this morning, it has happened to me quite a few times as well

phxbird, i use color pencils on standard white copy paper. i then scan the sketch in and sometimes adjust the brightness and/or contrast levels a bit. this sketch needed no adjustement.

--------------------
Kris

To be old & wise, you first gotta be young & stupid

8" dob
AstroTech 66ED/APO
TAL 120 newt.

my CN sketch & picture gallery


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phxbird
super member


Reged: 12/24/07
Posts: 192
Loc: New Mexico, USA
Re: Mars 15/08/09 new [Re: Kris.]
      #3276044 - 08/16/09 03:52 PM

That's what I thought. I am borrowing my wifes colored pencils and will give it a shot soon!

--------------------
"Big Gun" Celestron 6" Refractor
"The Bargain Bucket" 8" Dob
"X-Factor" Meade ETX 90 EC
"Short Round" Orion ST 80mm
"Dimestore" 60 mm Meade
Celestron AS-GT Mount
Skyview Pro
SAC-7b Imager
SBIG ST-7E Imager
Temple Research Observatory
AAVSO Member
Society of Astronomical Sciences Member


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Jef De Wit
sage


Reged: 03/06/09
Posts: 344
Loc: Hove, Belgium
Re: Mars 15/08/09 new [Re: phxbird]
      #3276066 - 08/16/09 04:07 PM

Hello Kris

Nice sketch! And thanks for your support to try to see some detail in Mars with my 7 cm refractor. But it didn't work... I will tell you my first try with my 30 cm dobson.

--------------------
Clear skies, Jef De Wit
7x50 bino, WO Zenithstar 80 Doublet Fluo & Orion Optics UK 12" Dobson
"Bright skies aren't empty skies" (James Mallaney)


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Special Ed
Post Laureate


Reged: 05/18/03
Posts: 4397
Loc: Greenbrier Co., WV 38N, 80W
Re: Mars 15/08/09 new [Re: Jef De Wit]
      #3278067 - 08/17/09 03:23 PM Attachment (21 downloads)

Really fine sketch, Kris! You do a great job rendering Mars with those color pencil--very subtle and realistic. Keep up the good work.

Your sketch reminded me of one of the earliest Mars sketches, done by Cassini's nephew Giocomo Maraldi. See any resemblance? [The sketch is from the book, The Exploration of Mars by Werner von Braun and Chesley Bonestell]

More on Marldi here:
http://en.wikipedia.org/wiki/Giacomo_F._Maraldi

--------------------

Michael Rosolina
8" f/10 Orange Tube SCT
4.25" f/4.2 Astroscan Reflector
SVP 3.6" f/13.6 CA Reflector
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
My CN Gallery


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Kris.
Pooh-Bah


Reged: 09/16/04
Posts: 1431
Loc: Belgium
Re: Mars 15/08/09 new [Re: Special Ed]
      #3279146 - 08/18/09 05:45 AM

Thanks Michael, yes indeed there is a resemblance

i doubt Maraldi was watching the same side of mars, too bad we'll never know what he saw (or is there software able to go back a few centuries ).
to me it looks a bit like one of Huyghens' sketches of Syrtis Major, take a look at his right sketch here. perhaps maraldi failed to see Syrtis Major extending further north, or there was haze obscuring it, or perhaps that feature was not as dark as it is now...
i find those old planet sketches fascinating!

i looked the book you mentioned up on amazon.com, "perhaps i'll buy it", i thought. seems they're selling from $50 up to $663

--------------------
Kris

To be old & wise, you first gotta be young & stupid

8" dob
AstroTech 66ED/APO
TAL 120 newt.

my CN sketch & picture gallery


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Special Ed
Post Laureate


Reged: 05/18/03
Posts: 4397
Loc: Greenbrier Co., WV 38N, 80W
Re: Mars 15/08/09 new [Re: Kris.]
      #3281843 - 08/19/09 12:25 PM Attachment (22 downloads)

Quote:

Thanks Michael, yes indeed there is a resemblance

i doubt Maraldi was watching the same side of mars, too bad we'll never know what he saw (or is there software able to go back a few centuries ).





Kris,

Most programs like Starry Night will let you go back or forward a couple of thousand years (or more). I took Mars Previewer II back to the date on Maraldi's sketch, August 19th, 1719. Unfortunately, since we don't know the time of Maraldi's observation I couldn't pinpoint the features that he sketched, but when I entered the time that Mars would have been at maximum altitude for Maraldi (36°), the CM came up 223°.

Quote:


to me it looks a bit like one of Huyghens' sketches of Syrtis Major, take a look at his right sketch here. perhaps maraldi failed to see Syrtis Major extending further north, or there was haze obscuring it, or perhaps that feature was not as dark as it is now...





Huyghens is credited with being the first to see and sketch Syrtis Major. Those two sketches of his you linked to were done many years before Maraldi. The one on the left was done on November 28th, 1659 and I believe is the first drawing of Syrtis Major. The one on the right was made on August 13th, 1672 at 10:30PM. I plugged those numbers into MPII and came up with Syrtis Major on the CM. Mars had an apparent diameter of 22.7 arcsecs on that date. Btw, this is the first sketch to clearly show the Martian South Polar Cap.

You're right--there is a resemblance to Huyghens's 1672 sketch. but I still think Maraldi sketched Mare Cimmerium--it just looks too much like your sketch. (Mars had an angular diameter of 24.8 arcsecs at the time of Maraldi's sketch)

I found another sketch that Maraldi did later in the year 1719--I think it shows that he knows what SM looks like. By this time, Mars had shrunk to 17 arcsecs.

Quote:


i find those old planet sketches fascinating!





Me, too!

Quote:


i looked the book you mentioned up on amazon.com, "perhaps i'll buy it", i thought. seems they're selling from $50 up to $663




Yes, it's a collectors item. I was fortunate to borrow a copy from a friend for a little while back in 2003. It no doubt contributed greatly to my Mars Mania.

--------------------

Michael Rosolina
8" f/10 Orange Tube SCT
4.25" f/4.2 Astroscan Reflector
SVP 3.6" f/13.6 CA Reflector
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
My CN Gallery

Edited by Special Ed (08/19/09 12:48 PM)


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Kris.
Pooh-Bah


Reged: 09/16/04
Posts: 1431
Loc: Belgium
Re: Mars 15/08/09 new [Re: Special Ed]
      #3283282 - 08/20/09 04:11 AM

Michael, thanks for your digging work
amazing coincidence that the suspected cm for maraldi could also have been 223°

--------------------
Kris

To be old & wise, you first gotta be young & stupid

8" dob
AstroTech 66ED/APO
TAL 120 newt.

my CN sketch & picture gallery


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JimPie
sage


Reged: 11/10/07
Posts: 230
Loc: S.E.Michigan
Re: Mars 15/08/09 new [Re: Kris.]
      #3283328 - 08/20/09 05:07 AM

Kris
What a great sketch. It not only makes me want to view mars more, It also makes me want to build one of those apodizing mask.

Jim

--------------------
Jim
12.5",f=4.8 truss dob
EQ platform,24mm pan,14mm radian, vixen LVs


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Kris.
Pooh-Bah


Reged: 09/16/04
Posts: 1431
Loc: Belgium
Re: Mars 15/08/09 new [Re: JimPie]
      #3283520 - 08/20/09 09:23 AM

thanks Jim, give making such a mask a try, it's well worth it imo.

--------------------
Kris

To be old & wise, you first gotta be young & stupid

8" dob
AstroTech 66ED/APO
TAL 120 newt.

my CN sketch & picture gallery


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rolandlinda3
Carpal Tunnel
*****

Reged: 01/24/06
Posts: 2306
Loc: Crozet VA 22932
Re: Mars 15/08/09 new [Re: Kris.]
      #3283698 - 08/20/09 11:16 AM

Very nice, Kris. And, now that you have had time with it, still love that 12 inches of aperture with sketching?? ...and how about the binoviewers??

Clear skies.

--------------------
Roland
Sketches in members galleries: rolandlinda3
Inspirational stories/sketches at:
www.christworksministries.org


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