4/1/2004 1:50UT
Wichita Falls, Texas USA  33.824  -98.544 994 ft.
Temp 60 F. 3 mph wind SW. Seeing 8 of 10. Transparency 9 of 10.
8" f/6 Reflector at x94 and x203.

The 79.5% gibbous moon revealed a splendid Lunar sunrise ray in Casatus. The ray was seen stretching west from the middle of the crater just south of C to the north side of J at the south rim. It was a simple ray extending 35 to 40 Km. The southern wedge of the dark shadow appeared to be a spike from a raised surface at mid crater, but I believe was really the rising rim of craterlet J.

-David Ryle

The Initial Predictions, Using Data in Original Reporting

Site Longitude = +98.544
Site Latitude = +33.824


Reproducing Lighting For: 2004/4/1 at 01:50 U.T.

Desired Solar Altitude =  +3.904(Rising),  Azimuth = +80.253

Feature = CASATUS
Feature Longitude: = -30.500
Feature  Latitude: = -72.600

Average Co-longitude =  43.661

Moon's Altitude Restricted = N

In the Time column, D=Daylight, T=Twilight

                      ---- Moon's ----    -- Earth's --
                        Topocentric        Topocentric      -------- Sun's --------
   UT Date    Time     Alt°   Semi-Diam''  Long°   Lat°     Colong°     Lat°    Azim°

 2004/04/01  01:50T  +66.650    930.35    -5.614  -6.600    040.961   -0.829  +80.253

Crater Description:

Casatus, -152, -953: A majestic ring-plain 0 miles in diameter, with walls rising on the west to 18,000 feet, and on the east in a grand peak to the great height of 22,000 feet above the floor. Along the crest of the west wall is a crater chain; the wall here appears as a night line of white cliffs. At the foot of the inner south-east wall is a row of mountain masses, like huge boulders. On the inner south slope is a large crater, and on the northern portion of the floor is another, C, of considerable depth; in addition there are some craterlets and hills. (Wilkins and Moore, The Moon, Faber & Faber, 1955)