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Craters of the North Polar Region

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#1 frank5817

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Posted 13 September 2017 - 11:48 AM

On the evening of September 10th to the early morning of September 11th I was out observing under condition of poor transparency but excellent seeing. The haze was thick as planet Saturn was deep orange in the southwest after nightfall and the Moon was also oange as it cleared the tree tops about 11:00 pm local time.
With the Moon’s latitude libration at + 7 and a half degrees, viewing the North Polar Region clearly was highly likely. I wanted to sketch as much of this region as I could so I began sketching at 01:00 a.m. local time. Conditions remained near perfect for the next three hours as I sketched. I had to reset my drive 5 times and rotate my sketch pad as I worked.

These are the craters I was able to see and include in the sketch.

                               Craters of the North Polar Region
1 Anaxagoras   51 km                                                   12 Lovelace 54 km
2 Barrow  93 km                                                            13 Main  46 km
3 Byrd  94 km                                                                 14 Meton  123 km
4 Challis 56 km                                                               15 Mouchez  83 km
5 C. Mayer 38 km                                                          16 Peary 75 km
6 Epigenes  55 km                                                      17 Rozhdestvenskiy 177km                                         
7 Florey  69 km                                                              18 Scoresby  56 km
8 Gioja   41 km                                                               19 Sylvester  58 km
9 Goldschmidt 121 km                                                 20 Timaeus  33 km                                    
10 Hermite 111 km                                                       21 W. Bond 156 km
11 Lenard 48 km

Sketching and Equipment:
For this sketch I used: black Strathmore 400 Artagain paper 9”x 12”, white and black Conte’ pastel pencils, white and black medium charcoal pencils and a blending stump.
Telescope: 10 inch f/ 5.7 Dobsonian and 6 mm eyepiece 241x, equatorial  platform
Date: 09-11-2017, 06:00 – 09:00 UT
Temperature: 16°C (60° F)
Transparency: poor, hazy, Seeing: Antoniadi V
Lunation  20 days, Illumination: 75 %

Frank McCabe smile.gif

Capturenp - Copy.JPG


Edited by frank5817, 13 September 2017 - 11:52 AM.

  • Jef De Wit, rerun, deepwoods1 and 14 others like this

#2 frank5817

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Posted 13 September 2017 - 11:49 AM

Sketch with labels

 

Frank smile.gif

 

lunar np.JPG

 

 



#3 niteskystargazer

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Posted 13 September 2017 - 02:39 PM

Frank,

 

Very good sketch of Craters of the North Polar Region smile.gif .

 

CS,KLU,

 

thanx.gif ,

 

Tom



#4 Randolph Jay

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Posted 13 September 2017 - 04:38 PM

Wow!  I never cease to be amazed at your skill in covering such an extensive and detailed area such as this!  Splendid! 

Regards,

Randolph



#5 tommy10

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Posted 13 September 2017 - 07:01 PM

Great sketch, glad you waited it out for better seeing conditions, I noticed both the sun and moon taking a redish appeareance even though they were fairly high in the night sky, I attribute it to the smoke from the wild fires out west, anyway, thanks for sharingl



#6 frank5817

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Posted 13 September 2017 - 07:11 PM

Tom , Randolph and Tommy,

 

Thank you.

This is a region I have wanted to sketch for a very long time.
The last few times it would have been this good for sketching, I was clouded out.

This was my best chance.

 

The smoke from the western fires have been passing over Chicagoland for days now but much of the heavy stuff moved down to the south on the 10th. I suspect some smoke is very high in the atmosphere and the air was very polluted from smog and stagnation. The seeing was remarkable but stars of 3rd magnitude were nearly invisible to the naked eye at midnight.

Frank smile.gif

 

deepwoods1, Cindy,cosmos823, aneeg and Augustus thanks for the likes


Edited by frank5817, 13 September 2017 - 09:22 PM.


#7 mariosi

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Posted 13 September 2017 - 09:33 PM

Excellent work Frank! Wonderful picture of Craters of North Polar Region. 

 

Marios 



#8 Uwe Pilz

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Posted 13 September 2017 - 11:35 PM

This is a hard to sketch area. Thank you for indicating at this region, I have to look there for myself.



#9 Sheliak_sp

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Posted 14 September 2017 - 10:15 AM

Wonderful sketch Frank! How many craters!

 

Migue



#10 Warmvet

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Posted 14 September 2017 - 12:09 PM

Wow Frank, thats a whole lot of beautiful work on 1 piece of paper. I always have difficulty when trying to sketch these polar craters, the elongation is difficult to get on paper. You have captured the region with precision in your own unique style. Just beautiful! Thank you for labeling the sketches, I feel I always learn something about lunar real estate from your sketches. Happy you had the conditions to get this piece done

 

Cindy



#11 woodscavenger

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Posted 14 September 2017 - 12:52 PM

great sketch style



#12 Aquarellia

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Posted 14 September 2017 - 12:54 PM

As stated here before we always learn something from your work!

I tried this kind of area in the lady but I feel this is the most difficult one.

Bravo

Michel 



#13 frank5817

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Posted 14 September 2017 - 05:15 PM

Marios, Uwe, Migue, Cindy, woodscavenger and Michel,

 

Thank you all much.

A fun and challenging  region of the Moon to sketch. I have sketched this region before but not with this good of a look.

I would have failed using graphite on white paper. I cannot sketch fast enough to have success with those media.

With white on black I can move faster. I think Randolph and Cindy would agree and I know other that would also agree. I sketched the right side first (terminator is there). As I worked the middle I started having trouble, some of the craters there did not match well with what I was seeing so I moved to the left for a while and went back. Lots of erasing and corrections in white pastel. Since I am left handed I prefer to sketch right to left.

September and October are usually the best times for observing and sketching in Chicagoland.

 

Frank smile.gif

 

Jef - thanks for the like


Edited by frank5817, 14 September 2017 - 05:16 PM.


#14 cloudbuster

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Posted 17 September 2017 - 06:44 AM

That is a stunning amount of regions that you caught. Rotating the sketch pad means that a persistant observer is at work, I recognize that from my open cluster sketches smile.png

The sketch is really beautiful, any particular reason why you decided to "smooth" region 14?

 

Regards, Martijn



#15 k.s.min

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Posted 17 September 2017 - 08:38 AM

Sketch with labels  is  very  useful  to  understand  the  name  of  the  craters  in  neighbour....thanks ,  Frank.



#16 frank5817

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Posted 17 September 2017 - 10:34 AM

Martijn and k.s.,

 

Thank you both for your nice comments on this sketch.

 

"...any particular reason why you decided to "smooth" region 14?"

 

I dropped a clip on light onto the sketch when I finished and damaged the paper.

That smudging was a weak  attempt to fix it.

 

Frank :)


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#17 astronz59

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Posted 18 September 2017 - 02:39 AM

Astounding collection of beautifully  rendered craters! I like this!  Telescope.gif bow.gif waytogo.gif



#18 frank5817

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Posted 18 September 2017 - 05:33 PM

Ian,

 

Thank you much.

I was happy to get this opportunity to see and attempt a capture of this view.

 

Frank :)



#19 azure1961p

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Posted 19 September 2017 - 10:53 PM

Frank,

 

Very nice and a lot of the higher angle sun lit face showing well here. Nice to see this kind of expanse in this drawing.

 

Pete



#20 frank5817

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Posted 20 September 2017 - 07:05 PM

Pete,

 

Thank you for those words.

 

Frank smile.gif


Edited by frank5817, 20 September 2017 - 07:06 PM.


#21 azure1961p

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Posted 22 September 2017 - 04:50 PM

Its a squirrely topography up there quite unlike the south. Up north as you show its not just overlapping impact craters but a chaotic landscape as well. Im guessing the Imbrium impact eons ago had affects here adding or creating that sculpted look. Again, nice revisit to this piece Frank.

 

Pete



#22 frank5817

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Posted 22 September 2017 - 05:58 PM

Pete,

 

You are correct about the big difference between the two poles and the Imbrium impact was no doubt a major factor in the north as you say.

As far as sketching goes, I was lucky to have a great view on a very steady night. The view I had in 2016 on a night of sketching was not even close to this years view and seeing conditions.

The older I get the less I want to miss these opportunities.

 

Frank :)




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