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Southeastern Limb: Good Libration Conditions

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#1 frank5817

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Posted 22 March 2024 - 12:37 AM

Mare Australe is an ancient, buried, large basin that falls mostly in the lunar libration zone southeast and beyond.
It is heavily cratered as it formed during the great bombardment as that event continued.
The crust of the Moon here is not especially thick and as the impacts continued many craters were completely buried as others seen today had their floors flooded by dark lava. Unlike the much younger Orientale basin at the Southwestern libration zone, no concentric rings are visible at Australe.
The first 5 craters listed and labeled are ones I have never previously sketched.
Lyot (141 km.), Hamilton (58 km.), Jenner (71 km.), Oken (72 Km.), Harlan ( 63 Km.),
Brisbane (44 Km.), Peirescius (62 km.)

Sketching and Equipment used:

For this sketch I used: black Strathmore 400 Artagain paper, 8”x 12”, white and black Conte’ pastel pencils, White Pearl eraser and blending stumps.
Telescope: 10 inch f/5.7 Dobsonian and 7.5 mm eyepiece 193x, on an equatorial platform
Date: 03-18-2024 02:30 - 03:55 UT, Temperature: 19°C (67° F)
Clear, calm, Seeing: Antoniadi III
Co longitude: 4.6°, Lunation: 7.8 days
Libration in Longitude:  + 06° 39’
Libration in Latitude:  - 06° 39’
Illumination: 60 %
Phase: 78.4°

Frank5817

 

 DSC07084.JPG

With some labels

 DSC07085.JPG


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#2 John_Moore

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Posted 22 March 2024 - 07:08 AM

Very nice, Frank waytogo.gif

 

John



#3 mdowns

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Posted 22 March 2024 - 07:34 AM

You shine in the shadows Frank,the buried impacts look great here.



#4 UnityLover

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Posted 22 March 2024 - 09:48 AM

Amazing sketch!



#5 niteskystargazer

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Posted 22 March 2024 - 10:01 AM

Frank,

 

Nice sketch of Southeastern Limb: Good Libration Conditions smile.gif .

 

CDS,KLU,

 

thanx.gif ,

 

Tom



#6 frank5817

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Posted 22 March 2024 - 01:40 PM

John, Michael, UnityLover, Tom.

 

Thank you for your kind comments on this sketch of the Southeastern limb of the Moon.

A lower sun would have made this easier.

 

frank smile.gif

 

Thank you for the Likes: Tom, Michael, John, Butch, desitter tcifani, deepskywim, Thomas, Tien, Tom Axelsen, robert, Look at the sky 101, HansD, AstroBoyInTheCity, Vlad, mitu, David, Pete, Anthony, viewer, Cindy


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#7 astronz59

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Posted 22 March 2024 - 03:52 PM

Outstanding job Frank, together with an informative discourse - very professional! waytogo.gif


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#8 frank5817

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Posted 23 March 2024 - 09:47 PM

Ian,

 

Thank you for the response to this sketch.

Clear skies to you an keep your pencils sharp.

 

Frank :)


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#9 JMSchwartz

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Posted 24 March 2024 - 09:43 PM

Nice view there is alot of depth to this,very nice texture.

Reguards Jon 



#10 frank5817

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Posted 24 March 2024 - 10:55 PM

Jon,

 

Thank you, it is always nice to see a short distance around the back side of the Moon.

 

Frank smile.gif



#11 azure1961p

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Posted 06 April 2024 - 06:58 PM

Love it Frank!



#12 nof

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Posted 08 April 2024 - 07:56 AM

You’ve handled a complex area in a wonderful manner, what a nice sketch and observation Frank!


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