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Astrophotography and Sketching >> Sketching

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frank5817
Postmaster
*****

Reged: 06/13/06

Loc: Illinois
Crater Lambert on Mare Imbrium
      #4519391 - 04/15/11 02:36 AM Attachment (44 downloads)

Crater Lambert on Mare Imbrium

Lambert crater is a smallish complex crater of 30 kilometers diameter resting on the floor of Mare Imbrium. This Eratosthenian crater must be some 2.5 billion years old. Its outer rampart is impressive, as is its floor, which unfortunately was not seen on this occasion due to morning shadowing.
The ghost crater Lambert R was detectable but is best seen closer to the terminator as sunset approaches during the waning crescent phase. Further south from Lambert and Lambert R, crater Pytheas (20 km.) was also visible.
Closer to the sunrise terminator Mons La Hire was casting long shadows while crater Euler (29 km) was just catching light on its eastern rim.
To the north of Lambert, Dorsa Stille and Dorsum Zirkel were easily visible along with many small craters.


Sketching Information

Lambert crater on ebony black Canson paper using white and black Conte’ pastel pencils
Sketch Date: April 13, 2011, using a 10 inch f/5.7 Dobsonian telescope riding on an equatorial platform with a 6mm eyepiece for 241x at 03:00-04:10 UT
Seeing: Antoniadi III
Weather clear, calm, 50 degrees F (10 degrees C)
Lunation 9.5 days
Moon 67.9% illuminated
Colongitude 27.7°
Rükl Atlas Pl 20

Frank McCabe


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mikesemmler
sage


Reged: 06/01/09

Re: Crater Lambert on Mare Imbrium new [Re: frank5817]
      #4519540 - 04/15/11 05:46 AM

this is great, thanks Frank, to share it with us

Michael


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Mark9473
Postmaster
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Reged: 07/21/05

Loc: 51°N 4°E
Re: Crater Lambert on Mare Imbrium new [Re: mikesemmler]
      #4520347 - 04/15/11 01:37 PM

Incredibly realistic sketch! Almost like looking through the scope.

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Rutilus
Carpal Tunnel


Reged: 12/17/10

Re: Crater Lambert on Mare Imbrium new [Re: Mark9473]
      #4520379 - 04/15/11 01:52 PM

Another excellent sketch Frank.

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niteskystargazer
Carpal Tunnel
*****

Reged: 10/05/09

Loc: 41-43'-28" N 87-42'-39" W
Re: Crater Lambert on Mare Imbrium new [Re: frank5817]
      #4520631 - 04/15/11 04:09 PM

Frank,

Very nice sketch of Lambert .

CS,KLU,

,

Tom


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

Loc: Utah
Re: Crater Lambert on Mare Imbrium new [Re: niteskystargazer]
      #4520916 - 04/15/11 06:47 PM

Was out looking around last night and your sketch is certainly realistic and as always, just fantastic.

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frank5817
Postmaster
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Reged: 06/13/06

Loc: Illinois
Re: Crater Lambert on Mare Imbrium new [Re: JayinUT]
      #4521147 - 04/15/11 09:27 PM

Mike, Mark, Rutilus, Tom, and Jay,

Thank you all for your comments on my crater Lambert sketch.
I was getting a very good view and although there were many fine targets to choose from, I have not sketched Lambert since 2007, so I thought I'd have another go at it.

Frank


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CarlosEH
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Reged: 01/19/05

Loc: Pembroke Pines, Broward County...
Re: Crater Lambert on Mare Imbrium new [Re: frank5817]
      #4521466 - 04/16/11 02:12 AM

Frank,

An excellent observation of Crater Lambert on Mare Imbrium. You have recorded the terraced walls/shadows and ridges very nicely. Thank you for sharing it with us all.

Carlos


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Tommy5
Carpal Tunnel


Reged: 03/28/04

Loc: Chicagoland
Re: Crater Lambert on Mare Imbrium new [Re: CarlosEH]
      #4524031 - 04/17/11 11:53 AM

Great sketch of the Maria, I like the texture so realistic to the eyepiece view thanks for posting.

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frank5817
Postmaster
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Reged: 06/13/06

Loc: Illinois
Re: Crater Lambert on Mare Imbrium new [Re: Tommy5]
      #4525451 - 04/18/11 12:15 AM

Carlos and Tommy5,

Thank you both for your nice words.

Frank


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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: Crater Lambert on Mare Imbrium new [Re: frank5817]
      #4526281 - 04/18/11 12:29 PM

Frank, another impressive sketch of the Moon! At the top of your paper I see some signs of intelligent life on our sister

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frank5817
Postmaster
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Reged: 06/13/06

Loc: Illinois
Re: Crater Lambert on Mare Imbrium new [Re: Jef De Wit]
      #4526904 - 04/18/11 04:50 PM

Jef,

Thank you. One edge of the paper is embossed with the words 'Colorline Canson' over and over the other side is not. I'm sure I sketched on the wrong side but on the other side there was some gum left from the price tag.
I should know better by now because I have made this mistake before.

Frank


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Uwe Pilz
scholastic sledgehammer


Reged: 05/16/08

Loc: Leipzig, Germany
Re: Crater Lambert on Mare Imbrium new [Re: frank5817]
      #4529595 - 04/19/11 04:15 PM

Again a really realistic sketch. As black-on-white-sketcher I enjoy your inversed ones in a special way.

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frank5817
Postmaster
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Reged: 06/13/06

Loc: Illinois
Re: Crater Lambert on Mare Imbrium new [Re: Uwe Pilz]
      #4532791 - 04/20/11 09:12 PM

Uwe,

Thank you much.
I am hopeful you will be posting more of your sketches here very soon.

Frank


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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: Crater Lambert on Mare Imbrium new [Re: frank5817]
      #4536828 - 04/22/11 03:07 PM

Congratulations with your ASOD!

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frank5817
Postmaster
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Reged: 06/13/06

Loc: Illinois
Re: Crater Lambert on Mare Imbrium new [Re: Jef De Wit]
      #4537943 - 04/23/11 12:27 AM

Jef,

Thank you.

Frank


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