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Bob P | all galleries >> Galleries >> Moon 8" Telescope > Grimaldi - Hevelius Mosaic Udate: 2006/11/04 Utime: 02:02 - 02:16
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Grimaldi - Hevelius Mosaic Udate: 2006/11/04 Utime: 02:02 - 02:16

Image taken with 200mm f/6 Newtonian reflector.

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Danny Caes 17-Mar-2007 21:04
Extraordinary 'clair-obscur' effects!
This must be the region of the "Miyamori valley" between Lohrmann and Riccioli (the valley itself is still in darkness, before local sunrise at 72 or 73 degrees west).
Bob, in this photograph you have captured a small Reiner-gamma type swirl.
It's at 1 degree south and 61 degrees west (between Hermann and Lohrmann A).
The weird curly shape of that little swirl is noticeable on the Map-A-Planet Clementine photograph (close-up of the swirl).
At this area, several orbital Apollo-astronauts observed the lunar surface in a sort of bluish-greyish light (Earthlight on the western near side of the pre-sunrise lunar surface).

Danny Caes,
U.Gent Volkssterrenwacht -Armand Pien-, Belgie.
(Public Observatory of Ghent, Belgium).
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