[meteorite-list] Lunar West Side Story - the SMART-1 Movie

From: Ron Baalke <baalke_at_meteoritecentral.com>
Date: Mon Jun 26 11:33:40 2006
Message-ID: <200606261514.IAA28596_at_zagami.jpl.nasa.gov>

http://www.esa.int/SPECIALS/SMART-1/SEMN1GL8IOE_0.html

Lunar West Side Story - the SMART-1 Movie
European Space Agency
26 June 2006

This video was compiled with a sequence of images taken by the advanced
Moon Imaging Experiment (AMIE) on board ESA's SMART-1 during a full
lunar orbit, when the spacecraft was flying over the west 'side' of the
Moon.
 
AMIE obtained these images on 29 December 2004, flying over the west
edge of the Moon around 70? West longitude. SMART-1 was on an orbit
ranging between 1000 kilometres distance (perilune, over the South pole)
and about 5000 kilometres distance from the Moon (apolune, over the
North Pole).

>From these distances, a series of images could be obtained with some
overlap between them, that allowed to build a mosaic during a good part
of the orbit.

It is possible to note that the images are mirror-inverted. The
spacecraft attitude direction is also slightly changing along the orbit.

The beginning of the series shows close-up views of the old highlands
areas at the edge of the Orientale basin. Then it is possible to see the
edge of Oceanus Procellarum, a Mare area in Sinus Roris (from 30? to 50?
North), and the Northern highlands with some conspicuous craters.

 
 
Elongated ejecta debris from the giant Orientale impact basin - image 25
 
Like a target ring bull's-eye, the lunar mare Mare Orientale (the
'eastern sea') is one of the most striking large scale lunar features.
This impact basin is located on the extreme western edge of the visible
side of the Moon, and it is difficult to see from Earth.

Basin ejecta begins just outside the Montes Cordillera and extend up to
500 kilometres beyond the base of the mountains. This ejecta feature has
a rough texture and contains linear patterns that point back at the
centre of Orientale.

 
 
Edge of Oceanus Procellarum - images 52-56
 
Oceanus Procellarum, Latin for 'Ocean of Storms', is the largest of
lunar maria, and it is situated on the western edge of the visible side
of the Moon. In this image, it is the flat area on the right hand side.

Oceanus Procellarum extends over 2500 kilometres along its north-south
axis and covers an area of about four million square metres. Its name
derives from the old superstition that its appearance during the second
quarter was bringing bad weather.

 
 
Edge of Oceanus Procellarum

Like all lunar maria, this area was formed by ancient floods from
volcanic eruptions that covered the region in a thick, nearly flat layer
of solidified magma. Unlike the other lunar maria, however, Procellarum
is not contained within a single well-defined impact basin. Minor bays
and seas such as Mare Nubium and Mare Humorum (to the South) lie around
its edges. To the northeast, Oceanus Procellarum is separated from Mare
Imbrium by the Carpathian Mountains.

Oceanus Procellarum was the landing site of the lunar probes Surveyor 1,
Surveyor 3, Luna 9 and Luna 13, and Apollo 12.

 
 
Pythagoras crater - images 115-119
 
The Pythagoras crater is centred at 63.5? North latitude and 62.8? West
longitude. Its diameter is about 130 kilometres and it is about 5
kilometres deep.

The rim of this crater is very well preserved. It presents a wide
terrace system and a slight rampart around its external part. It is
possible to observe that Pythagoras has a hexagonal form. The crater's
floor is flattened, but with an irregular and hilly surface.

There is evidence of landslides around the periphery, while in the
centre it is possible to see a sharp, mountainous rise with a
double-peak that rises one and a half kilometres above the floor of the
crater.

The crater was named after Pythagoras (582-507 BC), the Greek
mathematician and philosopher who believed that everything was related
to mathematics and thought that everything could be predicted and
measured in rhythmic patterns or cycles.

 
 
Carpenter crater - image 125
 
The Carpenter impact crater is located in the northern part of the Moon,
at 69.4? North latitude and 50.9? West longitude, and it is visible in
the upper left part of the image. Carpenter is 2.6 kilometres deep, and
its diameter is 59 kilometres.

In geological terms, Carpenter is a young lunar crater, much younger
than the surrounding crater formations - as one can see from its
features that have not been significantly eroded by new impacts. Its
inner wall displays an appearance of slumping (especially along the
eastern face) and presents some terraces. The outer rim presents a small
crater along the south-southeastern inner wall. The interior floor
within the slopping inner walls is quite flat, but it shows irregular
features such as small bumps and hills. Near the middle it is possible
to see an unusual double peak formation, with a smaller peak offset to
the west and a larger ridge offset to the east.

The crater is named after James Carpenter (1840-1899), British
astronomer at the Royal Observatory in Greenwich. In 1871, together with
the engineer James Nasmyth, he produced a book about the Moon titled
'The Moon: Considered as a Planet, a World, and a Satellite'. The book
contained images of plaster models of the lunar surface taken from
different angles - more realistic than the images that could be achieved
by telescope photography at that time.

 
Poncelet crater - image 127
 
Poncelet is an eroded formation 69 kilometres wide - the remains of a
lunar crater that is located near the northern limb of the Moon at 75.8?
North latitude and 54.1? West longitude. It is visible at the bottom of
the image, slightly decentred to the left.

Its interior has been flooded with lava, and it presents many tiny
craters. The outer rim is a low, circular ridge which breaks towards
south and northeast (in this image, the South is up).

 
 
Mouchez crater - image 133
 
Mouchez is an 81-kilometre wide formation - the remnant of a lunar
crater that is located near the northern limb of the Moon. It is centred
at 78.3? North latitude and 26.6? West longitude (visible at the top of
the image, slightly decentred to the left), to the north of Philolaus
crater.

As visible in the image, almost the entire eastern rim of this crater is
missing, and the remaining arc is heavily eroded. Also visible at the
bottom-right of the image is the Gioja crater (in this image, the South
is up).

 
 
Gioja crater - image 135
 
Gioja is a lunar crater that is located in the vicinity of the north
pole of the Moon, at 83.3? North latitude and 2? East longitude (centre
of the image, slightly decentred towards the bottom). Because it lies
close to the Northern limb, it is difficult to observe it from Earth (in
this image, the South is up).

Gioja is 2.9 kilometres deep and 41 kilometres wide (diameter). It is
attached to the southern rim of the larger, low-wall Byrd crater. The
highest point of the Gioja crater's rim is situated at northwest, where
it has been reinforced by the rim of the Byrd crater and by other old
formations no longer visible. The interior floor is nearly flat, with a
ridge going from the middle to the north-northeast rim. The inner floor
is also marked by tiny craters, such as the pair visible near the
west-northwestern inner wall.

The Gioja crater is named after Italian marine pilot and inventor Flavio
Gioja (14th century) that perfected the sailor's compass.
Received on Mon 26 Jun 2006 11:14:04 AM PDT


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