IWLOP #071 - Walther

Large, prominent Nectarian Era Crater.

Location: 33.0 S 0.7E     Origin: Impact     Size: 132 km     Rukl: 65     Type: Complex Crater (CC)

Objects: Walther, Nonius
Others Identified: Alpetragius, Alphonsus, Ammonius, Aristillus, Arzachel, Autolychus, Herschel, Luna 2 landing site,  Ptolemaeus, Sinus Lunicus, Thebit

Observation 1:
Location: Home

Date: 2018-09-17
Time: 7:35 PM ADT (Sunset: 7:22 PM)
Equipment: 6" Dobsonian, 10 mm eyepiece
Magnification: x120
Seeing: Good (3)
Transparency: Good (3)

R1: Walther had terraced walls, especially in the north-northeast. There were five peaks / bright areas seen off-centre towards the east side. Several others interrupted the exterior walls; not all were sketched.
R2: Numerous craters were seen on the eastern walls and in the adjoining wall with Nonius.

C1: Shortly after sunset, a lightened area stretched across Walther from the east to the overlapping craters.


Observation 2:
Location: Home
Date: 2021-04-19
Time: 8:30 PM ADT
Equipment: 10" Meade SCT, 4.7 mm eyepiece + x2 Barlow
Magnification: x1060
Seeing: Good-Fair (3 (mostly) and 2)
Transparency: Very Good (4)

R2: Details of the numerous craters and the central peak were more readily seen with the larger telescope and magnification.




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