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67champ
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Reged: 07/03/06
Posts: 324
Loc: Ohio, USA
Re: Lunar X - August illumination (Werner X) new [Re: PhilH]
      #2587309 - 08/17/08 08:31 PM

Phil,

AND, the "other" COOL illumination is what I call the Curtiss Cross (Named after Robert Curtiss of New Mexico) who took what I believe is the first photograph of it back in the 1950's:

The "Curtiss Cross", X-shaped lunar illumination (similar to the first quarter lunar X) is located between craters Parry and Gambart. It is an "X" shaped or "cross" shaped illumination that can be seen near the terminator, thanks to the low angle of lunar sunset and the topography of this area (with the aid of a telescope of course).

This "X" or "cross" may not be quite as obvious in contrast to the dark side of the terminator as the First Quarter Lunar X, but it is just as fleeting of a optical event and it is definately something to look for in my opinion. Appears at approx. 194 Co-Long. (After last quarter phase).

PM me if you want more info...

dana t

--------------------
"To the Moon!"
Orion 127mm Mak-Cass
Meade 60mm Refractor


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SaberScorpX
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Reged: 01/12/05
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Loc: illinois, usa
Re: Lunar X - August illumination (Werner X) new [Re: 67champ]
      #2587842 - 08/18/08 05:32 AM

The Lunar V is formed by the east wall of Ukert and adjacent angled mountain ridge. [Rukl's 33]
Nice catch guys.

http://the-moon.wikispaces.com/Ukert


Saber Does The Stars at
www.astronomyblogs.com/member/saberscorpx/


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67champ
sage


Reged: 07/03/06
Posts: 324
Loc: Ohio, USA
Re: Lunar X - August illumination (Werner X) new [Re: SaberScorpX]
      #2587899 - 08/18/08 07:05 AM

Yep, you got it Saber. Now is that nicknamed something with "horn" or "horns" in the name, or am I thinking of something else?

dt

--------------------
"To the Moon!"
Orion 127mm Mak-Cass
Meade 60mm Refractor


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PhilH
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Reged: 01/27/05
Posts: 232
Loc: Long Island, NY
Re: Lunar X - August illumination (Werner X) new [Re: SaberScorpX]
      #2588265 - 08/18/08 11:42 AM

Quote:

The Lunar V is formed by the east wall of Ukert and adjacent angled mountain ridge. [Rukl's 33]




Excellent, Stephen! Thank you.

--------------------
Phil Harrington
"Binocular Universe" Columnist, Astronomy magazine
Author: Star Ware || Star Watch || Touring the Universe through Binoculars || et al...
http://www.philharrington.net
http://www.observingsites.com
"Two eyes are better than one!"


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Carol L

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Reged: 07/05/04
Posts: 5880
Loc: Tomahawk, WI 45N//89W
Re: Lunar X - August illumination (Werner X) new [Re: PhilH]
      #2588422 - 08/18/08 01:04 PM Attachment (5 downloads)

Hi Dana, yes I have this one.. had to dig into my pics to find it.

Ukert M is the larger upper central hollow in the 'V', and the lower one is Ukert N. Crater Ukert itself is the shadowed arched curve on the lower left side of the 'V'.

And to round things out, here's my 'X' pic from the same night. (Had I known Chuck was going to use my email as the LPOD text, I'd have written something a lot better. )

--------------------
*Step-by-Step Lunar Sketching*
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8"SCT ~ 120achro ~ 90Mak ~ 80ST ~ 11x70s ~ 22x100s


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67champ
sage


Reged: 07/03/06
Posts: 324
Loc: Ohio, USA
Re: Lunar X - August illumination (Werner X) new [Re: Carol L]
      #2588651 - 08/18/08 03:06 PM

Carol, Very good! I thought you did a fine job on the LPOD text. Maybe it was on a different site, but I know someone had another name for this "Lunar V", and it was something "horns" or "horns of " something...? (anyone recall?)

dana t

--------------------
"To the Moon!"
Orion 127mm Mak-Cass
Meade 60mm Refractor


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