blackjeephunter
member
Reged: 03/19/08
Posts: 59
Loc: Sumter, SC
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http://en.wikipedia.org/wiki/Rupes_Recta
I stumbled on this a few nights back. I had no idea what I was seeing. The half moon showed it very well.
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dgs©
Postmaster
Reged: 03/29/04
Posts: 13852
Loc: West Monroe, Louisiana
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The "Straight Wall" is striking because it's such an anomaly... most stuff on the moon looks round or at least curvy to us, but then there is that dark (or light depending on when you catch it) line. What's that doing there? 
Nearby Thebit complex always reminds me of a fat bottomed snowman. 
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- david
8"Ø Newtonian on SVP, Moonlite CR2, Telrad
PST Oberwerk Ultra 15x70 Orion Ultraview 10×50
Hand-me-down Sears Refractor (Discoverer) 60mm×900mm
"What we have done for ourselves alone dies with us; what we have done for others and the world, remains and is immortal." --Albert Pike
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CESDewar
GorillAstronomer
Reged: 01/16/05
Posts: 1802
Loc: Morganton, GA, USA
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The Great Wall is best captured one day (possibly 2) past first quarter. At that point the illumination is close to optimal (at least during the first half phase). During this past lunation, I was able to easily see it in my 22x60 TAK Binoculars, not as easily in my 18x50 Canon IS (Handheld), and with significant difficulty but still definitely visible in my 11x56 binoculars (actually closer to 11.8x48) - tripod mounted.
A couple of lunations ago I caught a good image of Rupes Recta in my Celestron C-8 (attached here). It's interesting that recent lunar flyovers have shown that this formation is not the precipitous wall that it was once thought - it appears instead that this would be a very reasonable walk...
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Edited by CESDewar (08/13/08 11:38 PM)
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LivingNDixie
Lord of Ferrets
Reged: 04/23/03
Posts: 15782
Loc: Hoover, AL
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This is one of my favorite features.
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Preston
Celestron 11" Nexstar GPS XLT
Lunt LS60T/Ha 60mm f/8.33 (on order)
It’s not finishing something when your tank is empty that makes you a stronger person. It’s brushing yourself off and refacing the foe that defeated you with the same determination and willingness to fight that you had when you began your journey.
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kaaikop
sage
Reged: 07/13/08
Posts: 460
Loc: Ste-Therese, Canada
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Great Picture, Dewar! (any idea what mag.X that was?)
I stumbled on this one last night, with a ridiculous mag. of 470X on my 9.25, this thing is very very striking!
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Benoit, RASC Montreal
-C 9.25XLT on EQ6 Pro / ED80SF on Portamount
-Plossls, Radians, Naglers, LVW's & Orthos.
-a pair of 7x50's
Edited by kaaikop (08/15/08 07:43 PM)
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desertstars
Deja moo
Reged: 11/05/03
Posts: 29970
Loc: Tucson, AZ
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It gives an interesting perspective to go back to it sometime after full Moon, to see it with the west face lit up. Instead of a thin dark line, you have a thin bright line.
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Tom W.
SVP8 'She turned me into a 3-legged Newt' EQ
Ralph, the All-Purpose 102mm Refractor
Under the Desert Stars
"If we don't change direction soon, we'll end up where we're going." Professor Irwin Corey
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Mick Hyde
scholastic sledgehammer
Reged: 11/22/06
Posts: 884
Loc: Swindon, UK
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This is a great feature, I've photographed it many times.
Here's one though taken by the Apollo 16 Crew
Don't forget Moon Wiki
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Mick.
http://astromick.blogspot.com http://mickhyde.googlepages.com Swindon CSC
Celestron 9.25 XLT, Canon EOS 400D, DMK21AF04AS.
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kaaikop
sage
Reged: 07/13/08
Posts: 460
Loc: Ste-Therese, Canada
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Cool pictures! thanks for sharing!
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Benoit, RASC Montreal
-C 9.25XLT on EQ6 Pro / ED80SF on Portamount
-Plossls, Radians, Naglers, LVW's & Orthos.
-a pair of 7x50's
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rtomw77
sage
Reged: 10/06/04
Posts: 461
Loc: Deer Valley, AZ
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desertstars
At the right time and libration that thin bright line can become a streak of fire shouting "Here I am!" even in your finder or binos. I have been lucky enough to see this extra bright apparition several times.
Tom W. (  )
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Celestron 8" Nexstar GPS XLT
Meade 8" f/6 newtonian on GEM-New GSO Mirror
StarBlast 4.5" Dob
XT12 IntelliScope Dob with COL
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SaberScorpX
Post Laureate
Reged: 01/12/05
Posts: 4120
Loc: illinois, usa
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I also look for the Wall's distinct angled shadow wedge seen jutting out from the terminator at favorable illuminations.
Saber Does The Stars at
www.astronomyblogs.com/member/saberscorpx/
Extreme Lunar Crescent spotting data for Lunation 1060 is available at:
http://tinyurl.com/2rvsbc
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BobinKy
scholastic sledgehammer
Reged: 04/27/07
Posts: 930
Loc: Country road
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Steve--
I enjoyed the link to your website. When you write it--memoirs of a giant bino junkie should speak to a lot of us folks here on CN.
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Bob
38° Kentucky, USA
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SaberScorpX
Post Laureate
Reged: 01/12/05
Posts: 4120
Loc: illinois, usa
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Bob-
It's just a working title. But thanks. 
Saber Does The Stars at
www.astronomyblogs.com/member/saberscorpx/
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desertstars
Deja moo
Reged: 11/05/03
Posts: 29970
Loc: Tucson, AZ
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Quote:
desertstars
At the right time and libration that thin bright line can become a streak of fire shouting "Here I am!" even in your finder or binos. I have been lucky enough to see this extra bright apparition several times.
Tom W. ( )
First time I saw it bright like that with binoculars I couldn't quite believe my eyes.
Two Tom W.'s in the Lunie Bin? This could get confusing!
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Tom W.
SVP8 'She turned me into a 3-legged Newt' EQ
Ralph, the All-Purpose 102mm Refractor
Under the Desert Stars
"If we don't change direction soon, we'll end up where we're going." Professor Irwin Corey
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rtomw77
sage
Reged: 10/06/04
Posts: 461
Loc: Deer Valley, AZ
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No problem. I'll be the quiet one over in the corner.
Thanks for taking the time to produce your Collinder Catalog article. 
To get back on topic, I wonder if some of the computational wizards here could find the best time(s) to see Rupes Recta at its brightest?
Tom
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Celestron 8" Nexstar GPS XLT
Meade 8" f/6 newtonian on GEM-New GSO Mirror
StarBlast 4.5" Dob
XT12 IntelliScope Dob with COL
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