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Craters Stiborius & Piccolomini on the Terminator

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#1 frank5817

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Posted 19 November 2012 - 03:02 PM

At the end of a weekend with fine weather for mid - November, I was able to catch the Moon in skies mostly cloudy to my north. The lunar region I selected for sketching appeared very rugged in the long shadowed lighting. I was concerned I might not have enough time to sketch my targets. I was hoping for a two hour window but I got only 90 minutes.
Crater Piccolomini is the larger (90 km.) target to the north (inverted view – Newtonian scope). The floor was 60% in shadow and the central mountain peak was casting a shadow to the inner rim, a beautiful sight. It is at Piccolomini that we begin to see Rupes Altai radiating into the terminator shadow. Overlapping craters at the north rampart of Piccolomini added to the view. To the southwest in the sketch, crater Stiborius (45 km.) was in deep shadow with only the rim illuminated. I could have used that extra 30 minutes but I must say the enjoyment of the view left me pleased.

Sketching:
For this sketch I used: black Strathmore 400 Artagain paper, white and black Conte’
pastel pencils and a blending stump.
Telescope: 13.1 inch f/ 6 Dobsonian and 9 mm eyepiece 222x

Date: 11-18-2012 16:30 - 18:00 Local time (CST)
Temperature: 7° C (45° F)
Mostly cloudy, calm
Seeing: Antoniadi III
Colongitude: 332.5 °
Lunation: 5 days
Illumination: 32.3 %
Altitude of Moon about 32°

Frank McCabe :)

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#2 Rutilus

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Posted 19 November 2012 - 03:17 PM

Great Lunar sketch Frank.

#3 maroubra_boy

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Posted 19 November 2012 - 04:36 PM

Frank, lovely sketch mate. Very rugged "terrain" you selected to sketch, so detailed and dramatic. I'm also pleased at your sense of satisfaction, despite the session being cut short from what you would have liked. Almost like the sky is a 'prima donna', allowing what time it flippantly allows us before it closes up the show.

I've been away for a time, my apology, but not without being able to occasionally spy out the work on the sketching forum. Alas I have no new work to present at this time - the sky just hasn't been co-operative for a very long time. Actually, I haven't had dark sky time for over 13 months now. Fingers crossed things improve soon.

Alex.

#4 frank5817

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Posted 19 November 2012 - 05:18 PM

Rutilus and Alex,

Thank you much.
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Alex- I was wondering what happened to you. I'm happy to hear all is well (I was worried a brown snake got ya):help:. Hope you get those skies you need soon.

Frank :)

#5 maroubra_boy

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Posted 19 November 2012 - 06:17 PM

A bite from a brown would sure be more exciting than my sky at the moment. I've got nothing better to do, might go look for one...

#6 Chopin

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Posted 19 November 2012 - 06:44 PM

There is an awful lot going on there, Frank. I must admit that the thought of Lunar sketching is downright daunting to me. Not sure I'm ready to go there yet. Beautiful work!

#7 niteskystargazer

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Posted 19 November 2012 - 07:09 PM

Frank,

Good sketch of Craters Stiborius & Piccolomini :).

CS,KLU,

:thanx:,

Tom

#8 frank5817

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Posted 19 November 2012 - 09:45 PM

Jason and Tom,

Thanks, it was a race but fun to see and sketch these two.

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Alex, you stay away from those poisonous herptiles. :woohoo:

Frank :)

#9 Andrev

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Posted 19 November 2012 - 10:35 PM

Frank.

Its a nice sketch my friend.

Andre.

#10 Uwe Pilz

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Posted 20 November 2012 - 12:21 AM

I found a interesting shadow cast in crater Piccolomini. Very fine sketch.

#11 JimPie

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Posted 20 November 2012 - 12:47 AM

That is a very nice sketch Frank. I always enjoy seeing a lunar scape done in pastels.

#12 Asbytec

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Posted 20 November 2012 - 12:53 AM

Lunar sketching is one of those many patient skills and talent I don't have. I admire the work of those who do. There is just so much to capture. I have a tendency to grab every crater-let, rille or white speck and never manage to finish. It's so much easier to fill in the elliptical limb of Jupiter than to render the moon. Well done, Frank.

#13 Special Ed

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Posted 20 November 2012 - 09:31 AM

Frank,

Mighty fine work. Piccolomini is one of my favorite craters--it's everything a crater should be especially with that big central peak. Very dramatic view with the Altai Scarp trailing out into the terminator. You should be very pleased with this one. :)

#14 Jef De Wit

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Posted 20 November 2012 - 09:46 AM

Frank, your drawings always makes me want to go out and sketch the Moon too. I hope it stays clear until tonight!

#15 frank5817

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Posted 20 November 2012 - 10:36 AM

Andre, Uwe, Jim, Norme, Michael and Jef,

Thank you, the sight of the Moon always stops me in my tracks. I feel an urge to sketch it whenever I see it.

Just keep on sketching, whatever you see in the sky.

Frank :)

#16 stray1

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Posted 20 November 2012 - 11:59 PM

Hi Frank,

Fantastic sketch! Quite 3D in presentation. You have great talent and obvious patience to boot.

:grin:

-stray-

#17 Tommy5

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Posted 22 November 2012 - 12:39 PM

very nice lunar sketch, did you see the waxing moon set last night very red very dramatic almost due west , great sketch again.

#18 frank5817

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Posted 23 November 2012 - 12:30 AM

Stray and Tommy5,

Thank you for your kind words.

---
Tom, I did watch the Moon descend into the trees to my West, and I did see it turn Ivory colored but my western horizon is not "ideal", I missed the good show.

Frank :)

#19 mike73

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Posted 23 November 2012 - 03:40 AM

Inspirational lunar sketch once again Frank!
I gotta admit that I do keep an eye out for any white on black pastel work on the sketching forum and yours are always top notch.

#20 astronz59

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Posted 23 November 2012 - 09:25 AM

Frank, this is a powerful drawing, beutifully rendered! Great job! :refractor: :waytogo:

#21 frank5817

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Posted 23 November 2012 - 01:34 PM

Mike and Ian,

Thank you both for the kind words. I always try and take advantage of clear November nights. They are rare in these parts.

On Wednesday evening I was planning a sketch of Rupes Recta if sky conditions held up and they did. The sun was just reaching beyond straight wall as I began sketching. Very enjoyable session.
I set up to sketch Rupes Recta on the floor of Mare Nubium. From the eastern edge of Mare Nubium you can see the triplet craters, Thebit (57 km), A and L. Next moving westward is the Imbrian escarpment Rupes Recta , not a true wall in the usual sense but on one side standing more than 300
meters high at some locations and 114 km in length. The scarp face would be visible
from the rim of young crater Birt’s (17 km) to the west of “straight wall” if you could get there.
Touching the rim of Birt to the east is Birt A.

Sketching:
For this sketch I used: black Canson paper (8” x 10”), white and black pastel pencils, assorted erasers, and blending stumps
Telescope: 13.1” f/6 Dobsonian working at 222X (9mm ocular)
Date: 11-22-2012 01:00-02:45 UT Temperature: 12°C (54°F)
Hazy, slightly breezy
Seeing: Antoniadi III
Colongitude 10.1 °
Lunation 8.1 days
Illumination 64.9%
Alt. 45°

Frank :)

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#22 niteskystargazer

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Posted 23 November 2012 - 03:17 PM

Frank,

Good sketch of Rupes Recta :).

CS,KLU,

:thanx:,

Tom






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