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Santbech

Colombo 45.8"E 15.1"S These are typical craters with terraced walls, central peaks and relatively flatten floor. Santbech is 64 km in diameter, Colombo is 76 km.

Bohnenberger 40.00 E 16.20 S A crater with internal low hills, 33 km in diameter. It rests on the eastern edge of Mare Nectaris where wrinkle ridges are prominent at Moon age of 18 days.

Gutenberg 41.20 E 8.60 S

A flooded crater, 74 km in diameter. Its eastern wall is broken by a smaller flooded crater. Two wide systems of rilles, Rimae Gutenberg (length 330 km) and Rimae Goclenius (length 240 km) run in the vicinity.

Montes Pyrenaeus 41.20 E 15.60 S (Image T193) Mountain range from the south of Gutenberg to Bohnenberger and beyond, length 164 km. It appears as part of the rising rim of the Nectaris impact basin.

200S.08.12 21123 LFT Age 18 days 10-lh 06 Newtonian + 4X + MJcam

Sabine, Ritter, Hypatia, Delambre, Arago, Lamont

Hatfield 1,13 Rukl 35, 46

1. Sabine 2. Ritter 3. Schmidt 4. Armstrong 5. Collins 6. Aldrin 7. Moltke 8. Hypatia 9. Delambre 10. Torn cell i 11. Umort 12, Arago 13. S os i gen es 2004.09.20 11:13UT Age 6 days. 10-in T/6+2.5X+ ToUcam

Two adjoining craters near the equator, each about 30 km in diameter and with rough floors. A prominent ridge intersects the southern rim of Sabine. On 1969 July 20, the Apollo 11 Lunar Module landed on the east of Sabine. The landing site is a flat area called Statio Tranquillitatis (Tranquillity Base). It is truly flat and was chosen by the Apollo mission planners to prevent any obstacle or hazard during final descent. To honor this pioneer expedition, three nearby craters are named after Armstrong (4.6 km), Collins (2.4 km) and Aldrin (3.4 km). Armstrong is the Apollo 11 astronaut who first set his foot on the Moon; Collins and Aldrin are other crew members.

Two systems of parellel rilles, Rimae Hypatia (length 200 km) and Rimae Ritter (length 100 km) are in the close vicinity of Sabine and Ritter.

Moltke 24.2 E A small crater with a bright halo, 6 km in diameter. The bright halo makes easier to recognize where crater Armstrong should be.

Hypatia 22.60 E 4.30 S

A curiously shaped crater. It measures 28 x 40 km and appears to sit on its own plateau.

Delambre 17.50 E 1.90 S

A terraced crater, 51 km in diameter, about 3000 m deep. Arago 21.40 E 6.20 N

A crater with sharp rim and ridged floor, 26 km in diameter. Two domes (a, P) and few smaller domes are in the vicinity.

Apollo 11 Landing Module (picture corner) and (he Laser Ranging Retro-reflector Array. The reflector was left by Apollo 11 crew on the landing site, and is still used today by the McDonald Observatory to monitor the precise Earth-Moon distance. (http://www. csr, utexas.edu/mtrsf)

Apollo 11 Landing Module (picture corner) and (he Laser Ranging Retro-reflector Array. The reflector was left by Apollo 11 crew on the landing site, and is still used today by the McDonald Observatory to monitor the precise Earth-Moon distance. (http://www. csr, utexas.edu/mtrsf)

Lamont 23.70 E 4.40 N

A ghost crater outlined by concentric wrinkle ridges, 106 km in diameter. It contains a macon.

1169 I

7. Rimae Sosigenes j 8. Maclear 9. Rimae Maclear I | 10, Ross 11. Carre! f k 12, Jansen \ 1 13 Maskelvne

| Wrinkle ridges around Lamont 2DS4.10.IB 21:40UT Age 19 days, 1frinf/B*2.5X*ToUam.AmwpoiiibtoOfafm^dtiaeARifelnid(naiTi8).

Right: The arrow points to a curved edge of lava flow, appears concentric with the central ghost crater Lamont (Label 9) which contains a mascon. This hints that the edge could be a buried rim of a pre-existing impact basin.

Label 10 & 11 are two domes, about 15 km in diameter and height below 300m. Label 5 are parallel fractures due to the massive weight of lava flooded in Mere Tranquillitalis.

1. Delarnbre

2. Sabine

3. Ritteij

4. Schmidt

5. Rimae Hypatia

6. Aldrin

7. Manners

9. Lamont

10. Arago Alpha

11. Arago Beta

2004.09,04 17:2B~17:56UT MoonAge 19.7 days 12.5-in f/6 + 4X + ToUcam

(Mosaic, 88% resized)

Serpentine Ridge, Plinius, Posidonius, Menelaus, Manilius

Mare TranQuMitatîs l +V J

Plinius '

Manilius

Mare Vaporum

le Monnier

> Bessel

Mare Serenitatis

' ■ , ' » Auloljcus v Mars ' ^ .. i. lÏ Imbrium

iacus Somn/on/m

Posidonius

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