real money slots casinos Payment Methods for US Customers casino slots usa internet casino links best online casinos 2013 no limit deposit and fastest payouts top casinos for real money sic bo online game meilleur casino en ligne bo argent reel

November 24, 2006

A LITTLE BASIN

Filed under: — chuckwood @ 12:01 am

bailly_lammell.jpg

image by Stefan Lammel, Uxbridge, England

A big crater or a little basin? Bailly is a famous large (303 km) feature on the Moon’s southwest limb that is readily seen when lighting and librations are favorable. But beyond identifying it, have you studied it? Bailly lacks a central peak, but does have a series of low hills that suggest an inner ring. In impact cratering, as the energy of impact increases beyond a level that creates craters 200-300 km wide, the central peak is transformed into a low scraggily ring of hills. Bailly is an example of the onset of such a peak-ring morphology of impact basins. Although they are fairly common on Mars and Mercury, there aren’t many peak-ring basins on the Moon. Bailly is also rather old - its rim and floor are littered with many later random (and Orientale secondary) impact craters. Bailly is a an old feature, but it is not a walled-plain, nor is it a just a big, battered old crater.

Chuck Wood

Technical Details:
November 5, 2006, 02:15UT. 10″ f4.8 Newtonian + DMK21-AF0 + Astronomik Red filter + 5x Powermate.

Related Links:
R√ľkl chart 71
An overhead view
Stefan’s website

I have just restored the recommended book list. Now you can support LPOD when you buy a lunar book or ANY book [Xmas is coming!] from Amazon thru LPOD!

Comments (0)

&uot

Powered by WordPress