CRATERS IN THIS SECTION:
Albategnius, 136 km
Alphonsus, 108 km
Ammonius, 9 km
Flammarion, 75 km
Gylden, 47 km
Herschel, 41 km
Hipparchus, 150 km
Klein, 44 km
Medii, Sinus
Muller, 24x20 km
Oppolzer, 43 km
Ptolemaeus, 153 km
Reaumur, 53 km
Seeliger, 8.5 km
Sporer, 28 km

RANGER SPACECRAFT IMAGES:
http://www.lpi.usra.edu/resources/ranger/ (Ranger site)
Image - ra7_b001 - Ranger 7 - First image of the Moon taken by a U.S. spacecraft
Image - ra8_b001 - Ranger 8 - Ptolemaeus & Alphonsus craters
Image - ra8_p001 - Ranger 8 - Davy crater chain & Ptolemaeus  from 1300 km
Image - ra9_a001 - First Ranger 9 image, showing Mare Nubium & Alphonsus crater
Image - ra9_a035 - Alphonsus crater on the Moon from 440 km
Image - ra9_a060 - Central peak of Alphonsus crater on the Moon
Image - ra9_a070 - Floor of Alphonsus crater from 7.5 km
Image - ra9_b001 - Ptolemaeus, Alphonsus, and Albategnius on the Moon
Image - ra9_b035 - Northeast rim of Alphonsus crater from 700 km
Image - ra9_b087 - Floor of Alphonsus crater from 15 km
Image - ra9_p001 - P-camera images of Alphonsus crater from 25 km
Image - ra9_p006 - Four images of Alphonsus from 15 km
Image - ra9_p012 - Final two images taken by Ranger 9 before impact
Ranger 9 Impact, slightly dramatized & slowed down (You Tube)
Ranger 9 Impact (You Tube)

LUNAR ORBITER IMAGES:
Lunar Orbiter Database
lpi.usra.edu/resources/lunar_orbiter/bin/srch_nam.shtml?ptolemaeus|0 (Ptolemaeus, or type in any crater above)

APOLLO IMAGES:
Landing Sites Map
lpi.usra.edu/resources/apollo/search/feature/?feature=ptolemaeus&sort= (Ptolemaeus, or type in any crater)
AS12-51-7507 - Lunar Module over Ptolemaeus, Herschel, and Lalande
 http://www.astrosurf.com/lunascan/as12-51-7507.jpg
AS12-50-7431 - Oblique view of Ptolemaeus from Apollo 12
 http://images.jsc.nasa.gov/images/pao/AS12/10075402.jpg
AS16-0839 - Oblique of Hipparchus crater
 http://nssdc.gsfc.nasa.gov/imgcat/hires/a16_m_0839.gif
AS16-0989 - Overhead view of Ptolemaeus crater
 http://nssdc.gsfc.nasa.gov/imgcat/hires/a16_m_0989.gif
AS16-2478 - Oblique view of Alphonsus
 http://www.astrosurf.com/lunascan/as16-2478.jpg

LUNAR RECONNAISANCE ORBITER IMAGES
http://lro.gsfc.nasa.gov/
http://wms.lroc.asu.edu/lroc_browse/
(See LRO images of Tres Amicis, Zoomify, etc). *

YOU TUBE VIDEOS:
youtube.com/watch?v=vK7g1du_9bg&list=PL56882C1D4A379FC7

Research Updates:
lroc.asu.edu/news/index.php?/archives/597-Tres-Amicis.html (Tres Amicis, LRO) *
Astronomy Picture of the Day
On Alphonsus crater or: Observing Changing Solar Illumination On The Moon (GLR Group)
Inconsistant Moon - Alphonsus (Lunascan)
AS16-2965M (SP-362)
AS16-0708(M) Albategnius (SCentral Peak Has Crater Or Caldera? - (Lunascan)
Alphonsus (Lunascan)
Moon Shot - Ranger 9 (Lunascan)
AS16-4658 - Ranger 9 impact crater in Alphonsus (SP-362)
Crater Alphonsus (A16 M-2478, looking southwards)
AS16-0839(M) - Great oblique shot of Hipparchus looking toward Sinus Medii (SP-362,177)
AS16-0982(M) Imbrium basin near Albategnius (SP-362)
AS16-2965(M) Ptolemaeus (P-362)
AS16-1411(M) - Mare Imbrium & Herschel (SP-362)
AS16-2478(M) - Oblique view of Alphonsus (SP-362)
AS16-4656(P) - Part of floor of Alphonsus (SP-362,206)
AS16-0989(M) - Ptolemaeus (SP-362)
Article on LTPs in Alphonsus & Aristarchus (Analog)
Ptolemaeus (Lunascan)
Ptolemaeus - A Detailed Report (Lunascan Project)
AS16-1671(M) - Crater chain to the right of Ptolemaeus (SP-362)
AS16-1276(M) - Shot of crater chain of AS16-1671(M) (SP-362)
AS16-4653(P) - Crater  clusters near Ptolemaeus (SP-362)
AS16-4653(P) bu - Extreme blow-up of portion of AS16-4653(P) above
Anomaly in Ptolemaeus??? (Aerial4U & Lunascan Discussion)