A New Dawn across the Bay of Rainbows

  Northwest of the Sea of Rains is the 260 km. crater known as the Bay of Rainbows.
At the time of this evening observation the shadow of the terminator was crossing
the bay beyond 4 km. Heraclides E. A good one third of the bay floor was in
darkness but already Promontorium Heraclides and much taller Promontorium Laplace
across the bay were basking in the morning sunlight. A long triangular shadow from
the latter was seen extending westward. The sunlight was also descending the walls
of what remains of the crater rim known as the Jura mountains. My drawing does not
begin to capture the beauty of this view. East of the bay in the brightly
illuminated Imbrium basin are craters LeVerrier and Helicon both about 20 km. in
diameter. South of this pair are the much smaller craters Carlini and Carlini A.
  
  Sketching
  
  For this sketch I used:  White copy paper, 6”x 9”, 2H graphite pencil and an ink
  pen. Brightness was slightly increased after scanning.
  
  Telescope: 10 inch f/ 5.7 Dobsonian 12mm eyepiece 121x
  Date: 9-3-2006 0:30-1:15 UT
  Temperature: 20°C (68°F)
  Clear, calm
  Seeing:  Pickering 5/10
  Colongitude: 32.4°
  Lunation:  10.2 days
  Illumination: 71 %
  
  Frank McCabe