The “Group of Seven” was the name given to a number of Canadian artists who painted landscapes in the same style at around the same time; the original group was:  Franklin Carmichael, Lawren Harris, A. Y. Jackson, Frank Johnston, Arthur Lismer, J. E. H. MacDonald, and Frederick Varley.  Tom Thomson was noted as being the “founding father” of this artistic movement that was predominant almost 100 years ago now.

Tom Thomson’s ‘the Jack Pine’ (1916) ~ from Wikipedia

A little Canada hype, since it’s turning 150 this year….

My first GIS-processed crater results are well on their way to being completely analyzed.  The best MDIS and MLA data have been attained for seven Mercurian craters so far.  These craters are:  Abedin, Hokusai, Stieglitz, and four unnamed craters.  Mercury’s “Group of Seven,” if you will.

unnamed crater 4
An example:  One of the unnamed craters…, currently possesses the largest melt deposit (wrt crater size) of all 36 crater candidates.  Melts highlighted in lavender, crater rim drawn in blue, the crater’s “floor” is coloured green, and the red contour line is to highlight the crater’s rim crest low.

All seven craters reside at a latitude greater than 45*N; Hokusai and Abedin are neighbours, and the four unnamed craters are also neighbours to each other; Stieglitz is the closest of the craters to the North Pole, and is located nearest to Hokusai; most of these craters can be found within 90* (E or W) of Mercury’s “Prime Meridian.”

The other craters in my list are also being prepared; unfortunately, virtually all of them have very poor MLA data and so it looks like the next best thing for me is to use the “Mercury MESSENGER Global Colorized Shaded Relief” map with a resolution of 64 pixels per degree (ppd).  For comparison, the MLA imagery used for the seven craters above is at ~170 ppd while the MDIS mosaic imagery is at 256 ppd.

More of that in later updates, though….

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