Straight wall

[Ags]

Shot this last night with my C6. Most of the session was spent hunting for a new battery for my RDF. I didn't just leave it on last time, I turned it to maxmum brightness too. I feel I should be getting more from the C6, possibly worth trying with a barlow?

I see there is a little rille to the left (West???) of the straight wall, I must look it up.

Here is the LROC data for the same area, no name for the rille.

And closer:

[Mr Spock]

Rima Birt 

[Ags]

Yes, JMARS now labels it as Rima Birt after searching by name...

[Mr Spock]

If you look closely, it looks like a string of craters.

[Ags]

A lava tube that has collapsed and surface material has funneled in along its length? I recall reading that lava tube diameter is inversely related to surface gravity. On Earth a lava tube can get a radius of 10m at most, on Mars 100m and on the Moon 1km.

[Nik271]

It looks that you have captured the light ray over Hesiodus crater in @Nyctimene 's post:

 

 

[Nyctimene]

1 hour ago, Nik271 said:

It looks that you have captured the light ray over Hesiodus crater in @Nyctimene 's post:

 

 

Yes, just the beginning, with the "searchlight"s spot on the western crater wall.

Stephan

[Ags]

Apollo 16 flew over this region.

[Mr Spock]

Interesting how it runs from crater to crater. Perhaps these two are volcanic in origin?