From: Alan Friedman <alan@greatarrow.com>

Date: November 26, 2007 2:42:45 PM MST

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Schiller


Hi Milton,


Thanks for posting that wide-field view. It gives a nice perspective on the region and shows the western component - the crater to the west pummeled by that large crater chain (Schiller C, I believe) to be lava filled much like the crater Prinz near Aristarchus. 


Alan



On Nov 26, 2007, at 4:30 PM, Milton Aupperle wrote:

Hi Alan;


On 26-Nov-07, at 2:17 PM, Alan Friedman wrote:

Thanks Milton,


There is a lot to ponder on in this field. The slump you point out is intriguing - it looks as if there is a small craterlet chain embedded in the right side of it - but perhaps they are bumps not craters, would take a better resolution view to be sure. I also noticed a line of craters/scarp that runs parallel to the right side of the picture about 1/4 the way in - running from the bottom, just to the right of Bayer and across the broken right end of Schiller. Do you see it? I've never noticed this before, but 100 MAP points and you tend to notice stuff!


Yep. When you look at it in detail when stacking / image processing you can see a lot more than one thinks is there :)


Outside your image area and to the south (Schiller in your images has South Up)  there are at least 2 large parallel streams of craters/craterlets that are as long as Schiller is, as shown in the wider field view:


http://www.outcastsoft.com/AstroImages/Schiller_20050420_MJA.jpg


The one looks like it might be partially captured in your image at the tail end.


So it would not surprise me if this is a chain of gravity attenuated comet or meteor fragments like when comet ShoeMaker-Levy whacked Jupiter.


Milton Aupperle


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