The Lunascan Project
presents
Ptolemaeus

Best image so far from The Lunascan Project effort, taken by
Charles Genovese with a 10" f/6 Newtonian & CCD camera.

Section 44 from the Antonin Rukl Atlas

Earth-Based Telescopic Images:
Image - Ptolemaeus, Alphonsus & Arzachel/Birt & Rupes Recta (Higashida)
Image - Alphonsus, Ptolemaeus & Arzachel, photo (Therin)
Image - Alphonsus, Ptolemaeus & Arzachel, High-Res 9" S/C (Legault)

A Ranger 7 Spacecraft Recon Image
Full resolution (533k) image - ra7_b001 gif

First image of the Moon taken by a U.S. spacecraft. Ranger 7 took this image on 31 July 1964 at 13:09 UT (9:09 AM EDT) about 17 minutes before impacting the lunar surface. The area photographed is centered at 13 S, 10 W and covers about 360 km from top to bottom. The large crater at center right is the 108 km diameter Alphonsus. Above it is Ptolemaeus and below it Arzachel. The terminator is at the bottom right corner. Mare Nubium is at center and left. North is at about 11:00 at the center of the frame. The Ranger 7 impact site is off the frame, to the left of the upper left corner.

Two Ranger 8 Spacecraft Recon Images
Full resolution (514k) image - ra8_b001.gif

Ptolemaeus & Alphonsus. Ranger 8 camera B on 20 February 1965 shows the 164 km diameter Ptolemaeus crater, top center, and below it Alphonsus crater (diameter 108 km). The Davy crater chain can be seen immediately to the right of the left-middle reticle mark as a dotted white line extending SWW to NEE. The picture was taken 23 minutes before impact from a range of 2545 km. The image is about 360 km across and north is up. Ranger 8 was the second successful lunar impact mission in the series.

 Full resolution (431k) - ra8_p001.gif

These four images were the first taken by the Ranger 8 P-series cameras. The images are ordered (clockwise from upper left) P3, P4, P2, P1. The P3 and P4 cameras had 6.3 degree fields of view (~135 km across) and show 164 diameter Ptolemaeus crater to the right and the Davy crater chain, a white line running SWW to NEE at left middle in P3 and lower left in P4. The P1 and P2 cameras had 2.1 degree fields of view (45 km across). P1 shows a close-up of the crater Davy Y at the upper right. Image P2 shows the area just east of P1. North is upRanger 8 - Four images Davy crater chain & Ptolemaeus  from 1300 km.

A Ranger 9 Spacecraft Recon Image
Full resolution (499k) - ra9_b001.gif

Ptolemaeus, Alphonsus, and Albategnius on the Moon. Ranger 9 B-camera image from 2500 km showing Ptolemaeus, Alphonsus, and Albategnius craters. Ptolemaeus is the large (164 diameter) flat-floored crater at the top. Alphonsus, diameter 108 km, is at lower left and the 114 km Albategnius crater is at lower right. The terminator runs through the lower corner. Ranger 9 impacted in Alphonsus crater 18.5 minutes after this image was taken. North is at 12:30.

Lunar Orbiter 4 Image:
http://cass.jsc.nasa.gov/expmoon/orbiter/4lo108h2.gif

Full screen image of Ptolemaeus taken by Lunar Orbiter 4 some time in May of 1967.

Apollo 12 Images:
 http://images.jsc.nasa.gov/images/pao/AS12/10075402.jpg

AS12-50-7431 - Oblique view of Ptolemaeus from Apollo 12

http://images.jsc.nasa.gov/images/pao/AS12/10075404.jpg

NASA Photo ID: AS12-51-7507.  Film Type: 70mm.  Taken: 11/19/69.  Title: Apollo 12 Lunar Module, in landing configuration, photographed in lunar orbit from the Command and Service Modules. The coordinates of the center of the lunar surface shown in picture are 4.5 degrees west longitude and 7 degrees south latitude. The largest crater in the foreground is  Ptolemaeus; and the second largest is Herschel.

Apollo 16 Image
http://nssdc.gsfc.nasa.gov/imgcat/hires/a16_m_0989.gif

Apollo 16, AS16-0989,  533k metric camera picture of Ptolemaeus crater on the Moon. Ptolemaeus  is 164 km in diameter and is centered at 9.3 S, 1.9 W. The interior of the crater is covered by the Cayley formation, a light-colored unit characterized by the gentle ridges and depressions, and numerous small craters. The Cayley formation may be related to the nearby Fra Mauro formation. The picture was taken from 112 km and north is up.

For other images and information, including the Rukl Chart for Section 31, click the following:

Section 44 Directory


This web page was produced by The Lunascan Project, whose Home Page is located at:

 http://www.evansville.net/~slk/lshomepage.html