Orion XT8i Dob 9x50 RACI Finder TELRAD Reflex Sight Agena SWA 38mm 70 FOV 2" EP Orion 25+10mm Sirius Plossl 52 FOV EP ES 82* 11mm, 18mm 2" ES 68* 24mm 6mm, 25mm Ortho. EP Televue 3X Barlow Filters Baader Continuum, UV/IF cut, Lumicon UHC, DGM OIII. SkySafari T-Ring and Adaptor for Olympus E-510 Oly sz-14 SteadyPix Deluxe iOptron SkyTracker 7.7lb Electro Dot Sight RD400X http://www.astrobin.com/users/NeilMac/
"Another new world, no beer, no women, no pool parlors, nothing to do here but to throw rocks at tin cans and we have to bring our own tin cans." Earl Holliman (Cookie)- Forbidden Planet
www.bajadarkskies.com 18" Starmaster dob (zambuto primary) 30" Starmaster dob (intermountain optics)
"You're not afraid of the dark, are you?" - Riddick "The best scientists are humble. They seek to understand, not to ensure their legacy, but merely to understand." - Mori
Mardi 4" achromat, ETX-70, 8"cat. Whitepeak Lunar Observatory Website
Quote:maybe you will get a scarp named after you!!
Quote:Mardi- sounds like a well reasoned interpertation, I just did'nt think my image was high res enough to resolve down to 250M, maybe 300-400M in my best seeing image (not this one).Brian, I use the 18" for all of my stuff, number one the 30 is onerous to transport and I think I would need almost perfect seeing to outdo the 18". But our region does get low subarcsecond seeing so perhaps one day. The seeing up at the observatory 9km east of us has median 0.45" seeeing.cheersMike
Quote: I use the 18" for all of my stuff, number one the 30 is onerous to transport and I think I would need almost perfect seeing to outdo the 18".
Quote:I did not follow all of that. "a slight, but very real change in azimuth of the graben faults"Did he mean a change in altitude? The line runs fairly straight; if he meant azimuth, to what was he referring? Mostly he seems to be saying the darker northern half of the run has an uplifted plateau on the right (east) with a relatively lower plain on the west. That is how it appears to me as well. So while it is obviously a graben in it's southern extent, perhaps it is a wall in the northern half after all. I should like to see it with a different lighting angle. I wish I were cleverer at navigating the orbital photo archive.
Quote:This region of the Moon was the Lunar Photo of the Day on 03/07/13. Under the image for this day, Mr. Wood states that this is a mini-Straight Wall, similar to one south of Aristarchus, saying that this one is 34km long and 60-70m high. He states there is probably a relation of the two of them. You can read it here: http://lpod.wikispaces.com/March+7%2C+2013
Quote: I had thought the elevation difference was caused by an eastern uplift, but now I think a settling or slumping of the western plain is more likely.
Quote:Rupes Albin... Does have a good ring to it. Clear skies!Thomas, Denmark