IWLOP #014 – Vallis Rheita
A spectacular lunar valley that is the longest and widest visible from Earth.
Location: 42.0 S 51.0 E Origin: May have formed with Nectaris Basin Size: 500 km in length Rukl: 68 Type: Valley
Objects: Rheita, Vallis Rheita, Young & Young D, Mallet & Mallet A, Neander
Others Identified: Reimarus
This session was conducted as part of the lunar observing session - Lunar Session - April 15, 2021.
Observation 1:
Location: Home
Date: 2021-04-15
Time: 8:10 PM ADT
Equipment: 10" Meade SCT
Eyepiece: Explore Scientific 4.7mm with 82° FOV
Magnification: x530
Transparency: Good (3)
Seeing: Very Good (4)
R1: Vallis Rheita appeared to run north-south, beginning as a thin strip near Reimarus, widening at Mallet and appeared almost like a ribcage as it went northward towards Rheita. Rheita's peak appeared elongated, i.e., linear not circular in appearance.
Observation 2:
Location: Home
Date: 2021-05-15
Time: 9:00 PM ADT
Equipment: 10" Meade SCT
Eyepiece: Explore Scientific 4.7mm with 82° FOV
Magnification: x530
Transparency: Good (3)
Seeing: Very Good (4)
C1: Elongated crater NE of Rheita appeared to have a flat floor; the area in its NW appeared rugged/terraced.
C2: Craters Young, Young D, Mallet and Mallet A were found. Did not find Neander on April 15 nor in this evening's observations.
Observation 3:
Location: Home
Date: 2021-05-17
Time: 9:49 PM
Other details not recorded
C2: Neander found during this evening of observing other lunar objects. The 'northern' end of the crater floor seemed to be higher in elevation than the south. Part of the SE wall looked deteriorated. The crater itself looked to be located in a raised area - mountains or plateau perhaps?
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