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The Sharp Rille

Started by stefan lammel, 12/06/2007 02:01AM
Posted 12/06/2007 02:01AM Opening Post
Hi all,

Here's another one that nearly got away... from 2nd November 06 an image of the Sharp Rille, with the Mairan Rille and Gruituisen domes. I was really pleased when I found the rille appeared in the processed image, I couldn't see it at all in the avi! smile

Sharp & Mairan Rilles & Gruithuisen domes :
http://www.pbase.com/slammel/image/89933892/original
2 image mosaic (enlarged 127.5%)

Sharp Rille :
http://www.pbase.com/slammel/image/89908312/original
single image (enlarged 200%)

In a previous LPOD http://www.lpod.org/?m=20060526 Chuck Wood wonders if the Sharp Rille might have once been continuous with the Mairan Rille. From the LOIV image 4158_h2 http://www.lpi.usra.edu/resources/lunarorbiter/images/print/4158_h2.jpg it seems there is only about 25 km separating the ends of the Sharp and Mairan Rilles. The ragged ends of two rilles do look very different here at their extremes, Sharp is much broader. There appears to be what looks like 3 or 4 very faint short linear rilles in between which resemble the Mairan Rille more than the Sharp Rille in appearance. To my eye there is just a suggestion in this image that these very faint linear rilles might overlap and continue to the west of Sharp. This enhanced crop shows this area just a little more clearly http://www.pbase.com/slammel/image/89942659/original

10in f4.8 Newtonian, DMK 21AF04, 4x PowerMate, red filter, 1/30s, gain
600, 900/4000, MAP: 26-29x 64, Registax v4, PSE 5, Focus Magic

Regards,
Stefan


Attached Image:

stefan lammel's attachment for post 39948

[COLOR="Navy"]
Stefan Lammel
[SIZE="Small"]
http://www.pbase.com/slammel/moon [/COLOR][/SIZE]
Posted 12/06/2007 02:20PM #1
Beautiful shot Stefan!
Sharp & contrasty... very nice! 8)

Ivan Gastaldo 8)
Coconut Creek, FL

Ivan's Observatory
Lat 26N 16' 48" Long 80W 10' 48"
[COLOR="Red"]Personal Website:[/COLOR] http://www.ivangastaldo.com

CCD Imaging and Processing/Deep Sky - Moderator
I like to complain about everything - Moderator
Posted 12/06/2007 02:47PM #2
Hi Stefan,

Thanks for the great picture and supporting links - a very interesting exploration of the region and these two rilles.

best wishes,
Alan

Alan Friedman

http://www.avertedimagination.com