Plato crater 20 Jul 2022

Based on Lunar Orbiter IV images we have some reliable measurements.
The crater itself is about 100Km diameter.
At south-west there is Montes Teneriffe, its elevation was of 2.4Km and a base diameter of 112 Km, at the right the Plato rimae (incomplete in the picture)

Internally we have the big four

A = 1.7 miles (2.7 km)
B = 1.5 miles (2.4 km)
C = 1.5 miles (2.4 km)
D = 1.3 miles (2.1 km)

+1 on the west-northwest wall
W = 2.0 miles (3.2 km)

The “Little Four”
e = 1.2 miles (1.9 km)
f = 1.0 miles (1.6 km)
g = 0.94 miles (1.5 km)
h = 1.4 x 0.8 miles (2.2 x 1.3 km)


The “Tiny Nine”
i = 0.7 miles (1.2 km)
j = 0.6 miles (1.0 km)
k = 0.7 miles (1.3 km)
l = 0.6 miles (1.0 km)
m = 0.7 miles (1.2 km)
n = 0.7 miles (1.1 km)
o = 0.7 miles (1.1 km) (double craterlet)
p = 0.7 miles (triple craterlet)
q = 0.6 miles (1.0 km) (double overlapping crater)

M42 on Stellarvue AT1010

The instrument was reviewed here

  • Location: Ghiro observatory
  • Instrument: Stellarvue AT1010
  • Camera: Canon 20D
  • Processing: Dss, Iris, Photoshop
  • Img 70x40sec @800iso
  • 35 Dark (no flat,bias)
This photo was taken during a PEM correction procedure, in the meanwhile why not try to take some shoots?
This the result, the moon, almost full was very near to the subject. This cheaper instrument works well, the main pain point is its  curved focal plane, bottom a detail of the angles before the cropping.