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Topic: Snellius crater

	Courses in Astrophotography
		This 57km diameter impact crater is attached to the north west rim of the large Petavius crater.
		This crater is 40km in diameter, and 3600m from the crater floor to rim.
		This is a well-known lunar impact crater 83km in diameter and lies on the eastern edge of the Mare Imbrium.
	www.damianpeach.com /lunar.htm (3755 words)

	YourArt.com >> Encyclopedia >> Metius (Site not responding. Last check: 2007-11-02)
		He continued his studies at Leiden in 1594, where he studied under Snellius.
		He worked for a brief time under Tycho Brahe on the little island of Hven, where Brahe had built two observatories, and subsequently worked at Rostock and Jena, where he gave lectures in 1595.
		The lunar crater Metius is named after him.
	www.yourart.com /research/encyclopedia.cgi?subject=/Metius (489 words)

	Vally News Dispatch -- Recommendations and Resources (Site not responding. Last check: 2007-11-02)
		Vallis Schröteri is a sinuous valley on the surface of the Moon.
		It is located on a rise of continental ground, sometimes called the Aristarchus plateau, that is surrounded by the Oceanus Procellarum to the south and west and the Mare Imbrium to the northwest.
		At the southern edge of this rise are the craters Aristarchus and Herodotus.
	www.becomingapediatrician.com /health/155/vally-news-dispatch.html (1283 words)

	Lake County Astronomical Society NightTimes
		Despite the hundreds of years during which the moon has been observed through telescopes and via more recent close views from space vehicles, observational data is still needed to test the theories of the origin of bright rays and their nature.
		And if you observed the craters when their rays could not be seen, that is also of great importance since it'll help determine when the rays are not visible.
		Other things to be noted are the association of rays with linear arrangements of craterlets, the divergence of rays from points other than the center of the 'parent' crater, and their becoming visible only at some distance from the point of origin.
	www.bpccs.com /lcas/Articles/moonrays.htm (1060 words)

	lune1septembre2000anglais
		When the conditions of libration are favorable, the Goddard crater at the dark bottom and the Sea of the Edge (Mare Marginis) are quite visible the septentrional part of the sea of Crises (Crisium Mare) is hemmed powerful mountainous solid masses.
		The Langrenus crater is majestic under an oblique light.
		The southern end of the sea of Fecundity (Fecunditatis Mare), where the clear lines resulting from the craters Petavius B and Snellius A intersect, extends until between the large crater Petavius and a group from craters bearing the name from famous navigators.
	www.astrosurf.com /couic-cam/lune1septembre2000ang.htm (739 words)

	Hitchhiker's Guide to Rukl Chart 59 (Site not responding. Last check: 2007-11-02)
		There are 4 central peaks in a cluster, this is a big old crater with smooth, slumped walls, there are 3 craterlets in a straight line near the central peak.
		Vallis Snellius could be traced over at least 70 km of the lunar surface, from a small, well defined crater about 30 km west of the crater Snellius westward, to a somewhat dark area southeast of Borda.
		At first I took it for a crater chain, as it appears broken and segmented yet with all the dark areas laid out in a perfectly straight line.
	www.shallowsky.com /moon/rukl59.html (469 words)

	The Lunar Crater Furnerius and the Mystery of Schroters Dome
		The crater first attracted attention in an attempt to try and establish the true nature of the southern floor as depicted by J.H.Schroter in his "Selenotopographische Fragmente" (1791-1802), and first noted by J.H.Phillips in his paper "Lunar Domes First Observed by J.H.Schroter" from the Journal of the A.L.P.O. vol.32 nos.3-4.
		At lunar longitude 60° East, 81 mile diameter Furnerius is a member of a group of large craters which lie in a North-South line and include Langrenus, the ancient flooded enclosure Vendelinus and Petavius.
		This large feature, easily seen given correct illumination, runs from the eastern floor of Furnerius in a northerly direction, at the large crater Furnerius "B" the rifle seems to "bend" and continue its run in a more westerly direction where it disappears from view in the north west corner of Furnerius.
	www.mikeoates.org /mas/cn/furnerius (886 words)

	Peter Lloyd's Lunar Pictures (Site not responding. Last check: 2007-11-02)
		The large crater Petavius at the top of the picture is bout 3,800 million years old and 180 km in diameter with walls rising to 3300 metres (although the lighting here does not show this well).
		Well shown, though, is one of several rimae that cut across the otherwise flat floor; this one extending from the foothills in the south-west to the 1700-metre high central mountain.
		The feature Rheita E intrigues me; it appears to be a long, narrow valley but it carries only the crater designation Rheita E. Stevinus and Snellius form a nice pair; Stevinus is much the younger of the two at no more than 1,000 million years compared with 3,900 million years for Snellius.
	homepage.ntlworld.com /peter.lloyd3/Moon/Craters/Stevinus050314A.html (356 words)

	Lunar Studies (Site not responding. Last check: 2007-11-02)
		Humboldt's size also puts it in the classification of a 'basin transitional crater'...'basin' size begins at about 300km (Grimaldi) but the transitional size craters (~135km-270km) provide an explanation for the uplifted floors common amoung such craters; the uplift is a response to the negative gravity well created by the impact.
		The darkened areas on Humboldt's floor are the results of volcanic activity related to the formation of deep-reaching fractures from uplift of the floor post-impact which provided pathways for later intrusion of lava and pyroclastic material.
		Vallis Snellius, seen running out to the terminator from just to the left of Funerius, is a long Nectaris basin impact secondary chain.
	www.cityastronomy.com /humboldt.htm (373 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)

	Stevinus
		To the southeast is the large Furnerius crater.
		Just to the northeast is the Snellius crater and the Vallis Snellius crater valley.
		To the west-northwest of Stevenus is the tiny crater 'Stevenus A', a feature that possesses a small ray system and a displays a high albedo.
	www.astrosurf.com /grenier/crateres/pages/stevinus.htm (188 words)

	Dave's Astronomy Pictures - The Moon
		Humboldt is a spectacular crater but not often seen, because it lies in the zone of libration, which was favourable for Humboldt on this occasion, and furthermore is in the eastern edge, a side less frequently captured because you have to wait until after full moon.
		The southernmost part of the crater wall has been submerged into the lava of the Mare, and although most of Gassendi's crater floor is lighter than Mare Humorum, the part adjacent to this break in the wall is the same colour, apparently formed of lava spilling in from the south.
		On the north-east wall of the crater is Porter, a somewhat smaller crater with a central mountain.
	www.davesastro.co.uk /moon/moondetails.html (4464 words)

	Hitchhiker's Guide to Rukl Chart 68 (Site not responding. Last check: 2007-11-02)
		If that identification is correct, another question presents itself: the overlapped walls of the two largest, central craters in Rheita E are absent, leaving a fairly smooth and level valley floor.
		This is unlike most examples of double craters (Sirsalis comes to mind) where the more recent crater displays a well defined rim, superimposed over the earlier feature.
		Also, looking again at Vallis Snellius, it was apparent that the shadow seen south of Borda on the 27th is not really aligned with the rest of the valley, which I would estimate terminates at about 48.5d East.
	www.shallowsky.com /moon/rukl68.html (775 words)

	Astrophotography by Anthony Ayiomamitis
		Named after the 17th Czech astronomer, this series of crater depressions in the southeastern quadrant measures 445 km in length and approximately 29 km in width.
		The initial section is bounded to the north by crater Rheita and crater Young further south where the valley then makes a dramatic shift towards the southwest and terminates at crater Mallet.
		This area is believed to be approximately 3.92 billion years old and is considered to be a result of the Nectaris impact basin and the radial ejecta from it leading to various formations in this particular area including Vallis Snellius.
	www.perseus.gr /Astro-Lunar-Vallis-Rheita.htm (129 words)

	Lunar observing report February 23th, 2004
		To the southwest of Mare Humboldtianum lies the crater Mercurius (Rukl 15).
		Langrenus is a young uneroded crater with an elevated rim.
		To the southwest of Petavius lies the crater Snellius.
	www.backyard-astro.com /solar/moon/2004_02_23/20040223.html (807 words)

	The Life and Times of a Bush Catchphrase, by Lisa and Snellius - Democratic Underground
		Others, such as "wanted dead or alive", or "we're going to get 'em", are blurted out by George W. himself in a moment of enthusiasm.
		Recently, "Snellius", a longtime member of Democratic Underground, pointed out something I hadn't realized -- the parallels between Bush's oft-repeated "they thought we were soft" speech, and a quote from Bill Clinton.
		Snellius urged me to read the Clinton speech, and look at the ways in which it probably influenced Bush's subsequent remarks.
	www.democraticunderground.com /articles/02/03/p/22_catchphrase.html (2794 words)

	Observing The Sky » Moon: Day 18 - “Hiding Cleomedes”
		THEN, the crater of Cleomedes (126 km) to the north side of Mare Crisium was visible, as was the crater rim of Langrenus.
		Vallis Rheita has bold relief, and the large old crater Janssen is best seen now, appearing as a heavily battered saucer.
		Tiny nearby Pierce is a fl “o.” Stevinus (46 mi.) and Snellius (50 mi.) further to the south are now inky fl pits, though the latter of these two appears to be just behind the advancing terminator.
	www.lpod.org /ots/?p=373 (279 words)

	LPOD lunar photo of the day » CAW Articles in S&T
		Deslandres and a Hell of a Crater, October 2000, p.
		Snellius Valley - Rheita and Snellius: Valleys of Wonder, April 2001, p.
		What’s New on the Moon (young craters), April 2000, p.
	www.lpod.org /?page_id=393 (705 words)

	Астронет > Looking Down the Chain
		Radiating from Mare Nectaris are a number of linear features, most notably the Rheita and Snellius valleys.
		These are thought to be basin secondary crater chains resulting from large blocks of rock ejected almost like a ray during the Nectaris impact.
		And it also seems to change it character - the craters between Rheita and Mallet are about 25 lm wide, but those closer to the limb have average widths of only about 10 km.
	www.astronet.ru:8101 /db/msg/1201077 (177 words)

	Related Papers (Site not responding. Last check: 2007-11-02)
		Underwater noise survey in the crater lake of Kelut volcano (Indonesia).
		Contributions to the geology of the East Indies from the Snellius expedition; Part I Volcanoes.
		Small eruption on December 6-7, 1920 in the crater lake of G.Kelut.
	www.vsi.esdm.go.id /volcanoes/kelud/papers.html (375 words)

	AJ's Deep Space -- Moon 26 June 2001 first quarter (Site not responding. Last check: 2007-11-02)
		This print was heavily dodged and burned on the enlarger, through a number 5 red filter, and printed from a relatively thin negative from the series, specifically to enhance contrast in the sunlit regions toward the eastern limb
		Note the rayed craters this treatment brings out — the pair Petavius B and Snellius A in the southeast, and smaller Proclus, on the west-northwest edge of Mare Crisium.
		Also very noticeable is the very bright crater Lagrenus, prominent at the eastern edge of Mare Fecunditatis.
	www.well.com /~ajmilne/photos_moon/moon_26_6_2001_b.html (305 words)

	Lisa Kadonaga
		They don't understand us." first appearance of the word "materialistic", which as Snellius* points out, seems to come directly from the Clinton quote.
		Snellius, in a recent note to me, observed: "Bush's speech writers have lifted from Clinton's idea almost completely -- softness, selfishness, materialism.
		Endnote: I'd like to thank "Snellius" of DU, for encouraging me to follow up this intriguing topic -- and for providing the link to the Clinton Yale speech.
	www.bushnews.com /lisa.htm (8606 words)

	Lunar features
		You can see an account of how these features were named and whom they were called after.
		Be warned that the list of lunar crater names is very large (about 600K).
		If you go to the longer file (73K) you can see the features courtesy of the US Naval Research Laboratory Website showing images taken from the Clementine satellite.
	physics.rug.ac.be /Fysica/Geschiedenis/Societies/LunarFeatures0.html (79 words)

	moon1 (Site not responding. Last check: 2007-11-02)
		Because of the lack of shadow it is difficult to identify many of the features on this picture.
		However, the large white crater on the left is most likely the craters Stevinus and Snellius which would be near Mare Fecunditatis which is in the other moon image on the image page.
		The clear round crater with the dot in the center near the top right portion of the picture is most likely crater Tycho.
	www.carleton.edu /departments/PHAS/astro/pages/michele/moon1.html (161 words)

	Matt Tarlach; Curiosities near the Eastern Limb (Site not responding. Last check: 2007-11-02)
		Moving on: northwest of Langrenus, the craters Bilharz, Atwood, and Naonobuare are arranged on Fecunditatis like the three corners of a square.
		Lastly, exploring the region of Valles Snellius and Rheita, several of the less obvious crater chains and valleys that run parallel to these named features were easy to see.
		There appear to be two overlapped systems, as all of the major furrows appear to be aligned in one of two directions.
	observers.org /reports/2004.10.28.2.html (473 words)

	What’s Up - 365 Days of Skywatching » 2006 » July
		Also to the far south along the terminator you will see Mutus, a small crater with fl interior and bright, thin west wall crest.
		The fall rate for this shower is around 10 to 35 per hour, but unlike the Aquarids, this stream produces those great “fireballs” known as bolides.
		Tonight the Moon will be high enough for us to have a great look at the area just a little southwest of Petavius to identify a small pair of Class I craters, known as Snellius and Stevinus.
	www.astrowhatsup.com /2006/07 (2068 words)

	Universe Today » Archive » What’s Up this Week: July 24 - July 30, 2006 (Site not responding. Last check: 2007-11-02)
		Power up and notice how these younger craters display much sharper and well defined outlines.
		If skies are steady, you may spy an odd looking series of confluent craters between the pair and the limb.
		The bright cliffs seen there are the Pyrenees Mountains which hold crater Gutenberg in their grasp.
	universetoday.com /2006/07/24/whats-up-this-week-july-24-july-30-2006 (1615 words)

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