JUNE 20TH - KALPROTH AND CASATUS, WHO?

[paulastro]

Out  about 9.50 to 11.15 pm with the Tecnosky 102ED.  Poor seeing but good detail in better moments.

Adjoining Clavius to the SW is Blancus,  and a little S of Blancus Is Klaproth and Casatus  adjacent to Klaproth's southern boarder. I thought they were quite striking, Kalproth being well illuminated and Casatus in total shadow, with ramparts separating them, looking a bit like a garden wall to me.

To the E of Casatus is a triangular dark area, and a bit further E an oblong dark area which is Newton, named after Isaac Newton of course.  How such a famous scientist should be relegated to an obscure crater near the edge of the S limb indicates in life he must have upset someone.  At least Robert Hooke would have seen the funny side of it 🙂.

Below is a single frame taken with the Olympus E-M5 Mk11, and a crop of the S limb area. I've also attached an image from NASA's SVS Lunar terminator software for the time I took my pic.

Oh I forgot, Klaproth, Martin Heinrich, 1743 - 1817, was a German chemist and mineralogical.  Castus was Paoli Casati, 1617-1707, an Italian mathematician.

Edited June 21, 2021 by paulastro

[Zermelo]

17 minutes ago, paulastro said:

Klaproth, Martin Heinrich, 1743 - 1817, was a German chemist

... who, ironically, named the element tellurium, but not selenium.
I always thought he sounded like a dodgy 1970s Dr. Who villain.