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Topic: Purbach (crater)

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	Purbach
		The distorted crater Regiomontanus is attached to the southern rim.
		The outer wall of Purbach is heavily worn, with the most intact section being along the east and northeast sides.
		The crater floor is relatively smooth in the eastern half, with a low series of ridges and a partial "ghost-crater" outline just to the west of the crater mid-point.
	www.astrosurf.com /grenier/crateres/pages/purbach.htm (314 words)

	Mark's Astrophotography - Moon - Zone 4
		Regiomontanus is the mid-sized crater with the off-center peak.
		This is indeed a crater on the top of this peak and suggests the mountain is of volanic origin (L46).
		Purbach is to the north, and the Straight Wall (L15) to the northwest of that.
	home.kc.rr.com /marksastropix/moon/zone4.html (483 words)

	[No title]
		Impact craters and basins, their numerous secondary craters, and heavily to lightly cratered plains are the characteristic landforms of the region.
		Later cratering history records a decreasing impact flux: of craters larger than 50 km diameter, 42 are classed as c3; 19 craters are assigned to c4; and 9 craters are c5.
		The cratering history of Mercury was concurrent with episodes of lava flooding (cratered plains) that may have obliterated some basins and flooded large areas in a manner similar to the mare filling on the Moon.
	webgis.wr.usgs.gov /pigwad/downloads/digeol/mercury/H6/H6TXT.DOC (3458 words)

	Georg Purbach - Wikipedia, the free encyclopedia
		He is credited with the invention of several scientific instruments, including the regula, the geometrical square, and the "Jacob's Staff." The Purbach crater on the Moon is named after him.
		Purbach has been called the father of observational and mathematical astronomy in the West.
		Purbach is also noted for his great attempt to reconcile the opposing theories of the universe, the so-called homocentric spheres of Eudoxus of Cnidus and Aristotle, with Ptolemy's epicyclic trains.
	en.wikipedia.org /wiki/Georg_Purbach (536 words)

	nayati voice (Site not responding. Last check: 2007-11-07)
		Kamerlingh Onnes (crater) 66 km Heike Kamerlingh Onnes
		Nicolai (crater) 42 km Friedrich Bernhard Gottfried Nicolai
		Tiselius (crater) 53 km Arne Wilhelm Kaurin Tiselius
	nayati4bap.blogspot.com (7203 words)

	Peter Lloyd's Lunar pictures (SW)
		Gassendi is a large crater (114 Km in diameter) situated on the northern shores of the Mare Humorum.
		Pitatus is a battered crater on the southern shores of Mare Nubium.
		Purbach, Lacaille, and Blanchinus are ancient craters at about 4,200 million years, but at least Purbach must be younger than Regiomontanus to its south.
	homepage.ntlworld.com /peter.lloyd3/Moon/Craters/SouthWest.html (1967 words)

	Lunar Images (via CobWeb/3.1 planetlab1.tamu.edu) (Site not responding. Last check: 2007-11-07)
		The small craters inside of Clavius are suitable for testing the resolution of smaller telescopes, as each one is progressively smaller.
		The small crater at the southern termination of the rile is about 3.1km wide and 470m deep.
		Other craters as small as 1km are visible in the image as well.
	www.astroimaging.com.cob-web.org:8888 /Lunarsmall.htm (1149 words)

	Blanchinus (crater) at AllExperts (via CobWeb/3.1 planetlab1.tamu.edu) (Site not responding. Last check: 2007-11-07)
		Blanchinus is a lunar crater that is situated in the rugged south-central highlands of the Moon.
		Adjacent to the south of Blanchinus is Werner crater, and La Caille is attached to the northwest rim.
		West of the crater is the prominent Purbach crater formation.
	experts.about.com.cob-web.org:8888 /e/b/bl/Blanchinus_(crater).htm (157 words)

	3towers Observatory Moon (Site not responding. Last check: 2007-11-07)
		On its Northern rim is the crater Goodacre.
		The crater with the central peak is Pythagoras.
		Contiguous to its Southern rim is the elongated crater Amundsen.
	www.3towers.com /3towersObservatoryMoon.htm (2067 words)

	Lunar Images (Site not responding. Last check: 2007-11-07)
		One of the most interesting features nearby is a grouping to the right of Ptolemaeus of small craters all in a line.
		Note, that not only are the 5 craters within Plato clearly visible but there us a hint of a number of even smaller ones as well.
		A number of smaller craters are also visible, with some smaller than 2km.
	www.astroimaging.com /Lunarsmall.htm (1149 words)

	Observing The Sky » Moon: Day 22 - \”Splendid Occultation!\”
		The craters of Tycho and Eratosthenes have an equal proportion of shaded within them - analogs in a sense with just over 1/4 of their floors dark.
		The entire crater trio of Ptolemy, Alphonsus, and Arzachel is visible with strong relief, but it is the middle of these that has the most sunlit floor.
		Giant crater Clavius on the southern highlands is all sunlit inside, and a \”V\” of shade lay inside the western interior of crater Maginus.
	www.lpod.org /ots/?p=917 (277 words)

	Astro Images
		Mare Frigoris, Mare Imbrium, craters Plato, Aristoteles, Eudoxus, and Casinni on 7/21/00
		Craters Theophilus, Cyrillus, and Catharina in waning gibbous phase on 11/15/00
		The Apennine and Caucasus Mountains with craters Cassini, Aristillus, Autolycus, Archimedes, and Manilius in waning phase on 8/21/00
	www.nwgis.com /greg/astimage.htm (1167 words)

	Forward to the Past
		Where he was at this time, the first Luna outpost or FLO 1 was in a small crater on the edge of the massive crater Tyco, measuring fully 50 miles in diameter, here would be built the military garrison that was to be called Tycho City.
		Once outside he slowly trundled toward the two hoppers that stood on the far side of the small crater they were in, on the other side of the rim of this crater was the edge of the massive Tycho crater itself.
		It was held on to the main body of the hopper by two brackets, wich held it on either side; these were hinged so as to allow the sphere to rotate through ninety degrees, so that it would always face forward.
	www.angelfire.com /scifi2/spectrum_hq/forward_to_the_past.htm (8494 words)

	Observing The Sky » Moon: Day 23 - \”Impressive Clavius\”
		These looked very outstanding, and further south, crater Purbach was an inkwell of flness.
		Crater Maginus to its north-northeast had a thick V-shaped shadow within it, but not so tomorrow morning.
		With the Moon rising then after 4:00am to the southeast and the lunar terminator at 12-13 degrees west longitude, crater Copernicus will be a gaping hole near the lunar equator, and Clavius will be very impressive to the south of it.
	www.lpod.org /ots/?p=994 (312 words)

	Universe Today - What's Up This Week - September 5 - September 11, 2005
		This ancient crater is a wonderland of details when on the terminator.
		This flooded old crater has no central peak, but it does have a much younger crater that has punched a hole in its lava-filled floor.
		The west wall is the last remaining untouched bridge, leaving the crater floor below it bathed in shadow from the lunar sunrise.
	www.universetoday.com /am/publish/printer_whatsup_sept5_2005.html (1720 words)

	David Kingsley; Tic Tac Toe on the Moon (Site not responding. Last check: 2007-11-07)
		The western edge of crater la Caille was brightly lit near the terminator.
		Right next to crater la Caille, the high eastern edge of the crater Purbach also caught the sun, although the crater itself was in darkness.
		The sun hitting just the highest rims of these two adjacent craters made an almost perfect, brilliantly white X shape, scrawled right at the boundary of the white and dark halves of the moon.
	observers.org /reports/2001.01.01.2.html (242 words)

	Peter Lloyd's Astronomy Pages
		Purbach is an ancient crater, about 4,200 million years old, but must be younger than Regiomontanus to the south.
		Lacaille (spelt La Caille by the VMA) is 70 Km deep and almost 2800 metres deep, and the floor is remarkably flat for such an old crater.
		Blanchinus is elongated, measuring 70 Km north-south and 55 Km east-west.
	homepage.ntlworld.com /peter.lloyd3/Moon/Craters/Purbach040906.html (182 words)

	THE FIRMAMENT: Moon - craters, mountains, mares, rilles (Site not responding. Last check: 2007-11-07)
		Mare Frigoris and the craters Plato, Aristoteles and Eudoxus.
		Aristoteles [crater, terrace-like walls, 87 km], Mitchell [crater, 30 km], Eudoxus [prominent crater with sharp rim, 67 km].
		The Luna 2 probe crushed on the slope of the Autolycus crater on 14 September 1959.
	www.madpc.net /~firmament/images/moon/moon_details/moon_details.html (6739 words)

	The Moon-Voyage by Jules Verne: Chapter XII. Orographical Details.
		Towards the north the sides of the crater were lowered into a depression which would probably have given access to the interior of the crater.
		These Carpathians looked then what the amphitheatres of Purbach, Arzachel, and Ptolemy would if some cataclysm were to throw down their left ramparts and transform them into continuous chains.
		Now this he found to be generally the case, and he hence concluded that a single eruption of volcanic matter had sufficed to form these ramparts, for successive eruptions would have destroyed the connection.
	www.online-literature.com /verne/moon-voyage/41 (2526 words)

	Observation Log - November 21, 2001 - Tinton Falls, NJ (Site not responding. Last check: 2007-11-07)
		Below and left is Thebit (57km), with the embedded crater on its rim.
		The three large craters going north and south just to the left of center are Purbach (118km), Regiomontanus (124km), and Walter (140km).
		The crater to the left of the wall is Birt (17km).
	www.marketiq.com /astro/aa112401.htm (663 words)

	[No title] (Site not responding. Last check: 2007-11-07)
		Risalendo lungo il margine occidentale in direzione nord incontriamo Kies, un cratere di 44 km di diametro la cui struttura è quasi completamente sepolta sotto i materiali che ricoprono anche il mare Nubium.
		In proximity of large part of the east margin of this large plain raise the bastions of the walls around to one crater series of large diameter: from north to south we have Ptolemaeus 140 km, Alphonsus 110 km, Arzachel 104 km, Purbach 120 km, Regiomontanus 130 km.
		From this last crater is beginning a furrow, the Hesiodus rhyme, than it is developed in direction of palus Epidemiarum. Going back along the western margin in direction north we meet Kies, a crater of 44 km of diameter whose structure nearly is completely buried under the materials that cover also the Nubium sea.
	www.rccr.cremona.it /monografie/luna/nubium.doc (711 words)

	July ~ 2002
		There is a striking little crater here with a central peak and an intruding crater on its' edge which I am fairly positive is crater Vlaq.
		It's rugged walls are to the west, and it's lip crater is very dark and promenient to the south.
		The crater walls were very bright, and the interior tight grey and smooth.
	members.tripod.com /~theastronomer/2002/july2002.html (20042 words)

	[No title] (Site not responding. Last check: 2007-11-07)
		The craters Autolycus and Cassini are visible, as well as the Alpine valley, looking very much like a giant claw mark on the moon's surface.
		The craters Archimedes(12) and Aristillus are also prominent and do not overlook Êthe enigmatic basin Plato(13).
		By the 12th day, the craters Aristarcus(20) and Kepler(21) are well placed, both displaying an extensive system of bright rays.
	www.thedailystar.net /rising/2005/03/02/special.htm (1770 words)

	Purbach (crater) (via CobWeb/3.1 planetlab1.tamu.edu) (Site not responding. Last check: 2007-11-07)
		Many of these can be purchased in extremely hi-res digital format.
		Purbach is a large lunar crater located in the rugged southern highlands of the Moon.
		By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Purbach crater.
	www.seattleluxury.com.cob-web.org:8888 /encyclopedia/entry/Purbach_(crater) (291 words)

	Around to the Moon by Jules Verne
		The glasses discovered traces of stratification produced by successive eruptions, and the neighborhood was strewn with volcanic remains which still choked some of the craters.
		A curious arrangement, and one without an exception on the lunar disc, is that the interior surface of these circles is the reverse of the exterior, and contrary to the form taken by terrestrial craters.
		Toward the north the escarpments were lowered by a depression which would probably have given access to the interior of the crater.
	www.4literature.net /Jules_Verne/Around_to_the_Moon/30.html (1027 words)

	Observation of the MOON - part I
		Bright and/or ray-associated craters are usually recent events (at an astronomical time-scale), and not always correspond to the larger craters visible on the Moon.
		East of Herschel is the eroded crater Hipparchus.
		East of Ptolemaeus and south of Hipparchus is Albategnius, with its rim interrupted by the smaller crater Klein.
	astrosurf.com /cidadao/moon_obs.htm (2309 words)

	Week 9 Readings
		They are certainly anterior to the formation of craters and circles, for several have introduced themselves by breaking through their circular ramparts.
		It forms an annular crater, the ramparts of which, rising to a height of 21,300 feet, seemed to be impassable.
		It is but a group of hollows, craters, circles, a network of crests; then, as far as the eye could see, a whole volcanic network cast upon this encrusted soil.
	eee.uci.edu /clients/bjbecker/ExploringtheCosmos/week9d.html (15229 words)

	Weasner's Meade ETX Site
		The sweeping curve of Montes Appeninus was clearly visible with the crater chains Ptolemaeus-Alphonsus-Arzachle and Purbach-Regiomontanus-Walter prominent on the terminator.
		Montes Alpes were partly visible, but the Valles Alpes was sadly out of view, hidden in shadow.
		As always, it was difficult to focus accurately using the small LCD camera screen, but the contrasted craters on the terminator made the best targets.
	www.weasner.com /etx/observations/2004/etx-70_obs15.html (502 words)

	The Frugal Moon Astrophotographer (Site not responding. Last check: 2007-11-07)
		The (barely) prominent trio of craters located up and to the left of the image's center are (left, right, down) Vlacq, Hommel, and Pitiscus.
		Piccolomini (88 km/55 mi) is the crater at the upper edge of the image, also with a central peak.
		The walls of Endymion plummet 5,000 meters (16,100 ft) to the crater floor.
	stargazer.isys.ca /Moon/index.htm (408 words)

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