Craters Mercator, Campanus and Ramsden
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After another canceled public telescope viewing Friday evening due to thick clouds and light snow, I was pleased to see a nice Saturday filled with sunshine followed by a clear night.
With no particular sketching targets in mind, I scanned the terminator for interesting sketching targets and stopped when I could see sunrise at Ramsden (26 km.) along with all those crisscrossing rimae (rilles).
Northeastward away from Ramsden and across Palus Epidemiarum, I also added two additional ancient craters Mercator (49 km.) and Campanus (49 km.).
This break in our poor Chicagoland spring weather was long overdue.
Sketching:
For this sketch I used: 400 series black Strathmore Artagain paper 9″x 9″, white and black Conte’
pastel pencils , and Conte’crayons, a blending stump, plastic eraser.
Telescope: 10 inch f/5.7 Dobsonian with 6mm (241x)
Date: 4-21-2013 01:00 – 02:45 UT
Temperature: 7.2°C (45°F)
Weather: clear, calm
Seeing: good Antoniadi II-III
Co longitude: 35.4°
Lunation: 10.6 days
Illumination: 74.1%
Frank McCabe
Another lovely sketch Frank ! It’s always a pleasure to see the moon via your eyes! Thank you for sharing this one.
Michel of Aquarellia
Only Two Words!! Wonderful Sketch!!
Lg HAjü
http://www.astromerk.de
Wonderful detail and texture, simply beautiful. Great sketch Frank !!
Mike
Frank,
Glad you got a break in your weather to produce a beautiful detailed study of the craters. I grew up in Chicago and remember how unoredictable weather could be! Looks like you made great use of your “spring coming” weather. Always enjoy seeing your sketches.
Cindy
Great!!!! Frank!!!Splendid work!! you are the Master of thai technic!!!
Ciao!! giorgio.
Michel,Lg HAjü, Mike, Cindy, and Giorgio,
Thank you all for your kind comments; they are much appreciated.
Frank 🙂
A very nice sketch, Frank. I love the long shadows we see this close to the terminator, and you have captured this extremely well.
-Ivan
Ivan,
Thank you.
Frank 🙂
Frank, as a direct descendant of Jesse’s may I say thank you for sketching this seldom noticed feature..:)
Stephen,
Thank you much I am really happy you like the sketch.
I am only sorry I didn’t use my Ramsden eyepiece which I have had since 1959.
Frank 🙂
Frank I have run out of superlatives for your work Sir 🙂
Dale UK