Cráteres De La Luna (Langrenus, Petavius Y Vendelinus) II
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Glossary Glossary
Glossary Glossary Albedo A measure of an object’s reflectivity. A pure white reflecting surface has an albedo of 1.0 (100%). A pitch-black, nonreflecting surface has an albedo of 0.0. The Moon is a fairly dark object with a combined albedo of 0.07 (reflecting 7% of the sunlight that falls upon it). The albedo range of the lunar maria is between 0.05 and 0.08. The brighter highlands have an albedo range from 0.09 to 0.15. Anorthosite Rocks rich in the mineral feldspar, making up much of the Moon’s bright highland regions. Aperture The diameter of a telescope’s objective lens or primary mirror. Apogee The point in the Moon’s orbit where it is furthest from the Earth. At apogee, the Moon can reach a maximum distance of 406,700 km from the Earth. Apollo The manned lunar program of the United States. Between July 1969 and December 1972, six Apollo missions landed on the Moon, allowing a total of 12 astronauts to explore its surface. Asteroid A minor planet. A large solid body of rock in orbit around the Sun. Banded crater A crater that displays dusky linear tracts on its inner walls and/or floor. 250 Basalt A dark, fine-grained volcanic rock, low in silicon, with a low viscosity. Basaltic material fills many of the Moon’s major basins, especially on the near side. Glossary Basin A very large circular impact structure (usually comprising multiple concentric rings) that usually displays some degree of flooding with lava. The largest and most conspicuous lava- flooded basins on the Moon are found on the near side, and most are filled to their outer edges with mare basalts. -
TRANSIENT LUNAR PHENOMENA: REGULARITY and REALITY Arlin P
The Astrophysical Journal, 697:1–15, 2009 May 20 doi:10.1088/0004-637X/697/1/1 C 2009. The American Astronomical Society. All rights reserved. Printed in the U.S.A. TRANSIENT LUNAR PHENOMENA: REGULARITY AND REALITY Arlin P. S. Crotts Department of Astronomy, Columbia University, Columbia Astrophysics Laboratory, 550 West 120th Street, New York, NY 10027, USA Received 2007 June 27; accepted 2009 February 20; published 2009 April 30 ABSTRACT Transient lunar phenomena (TLPs) have been reported for centuries, but their nature is largely unsettled, and even their existence as a coherent phenomenon is controversial. Nonetheless, TLP data show regularities in the observations; a key question is whether this structure is imposed by processes tied to the lunar surface, or by terrestrial atmospheric or human observer effects. I interrogate an extensive catalog of TLPs to gauge how human factors determine the distribution of TLP reports. The sample is grouped according to variables which should produce differing results if determining factors involve humans, and not reflecting phenomena tied to the lunar surface. Features dependent on human factors can then be excluded. Regardless of how the sample is split, the results are similar: ∼50% of reports originate from near Aristarchus, ∼16% from Plato, ∼6% from recent, major impacts (Copernicus, Kepler, Tycho, and Aristarchus), plus several at Grimaldi. Mare Crisium produces a robust signal in some cases (however, Crisium is too large for a “feature” as defined). TLP count consistency for these features indicates that ∼80% of these may be real. Some commonly reported sites disappear from the robust averages, including Alphonsus, Ross D, and Gassendi. -
Sky and Telescope
SkyandTelescope.com The Lunar 100 By Charles A. Wood Just about every telescope user is familiar with French comet hunter Charles Messier's catalog of fuzzy objects. Messier's 18th-century listing of 109 galaxies, clusters, and nebulae contains some of the largest, brightest, and most visually interesting deep-sky treasures visible from the Northern Hemisphere. Little wonder that observing all the M objects is regarded as a virtual rite of passage for amateur astronomers. But the night sky offers an object that is larger, brighter, and more visually captivating than anything on Messier's list: the Moon. Yet many backyard astronomers never go beyond the astro-tourist stage to acquire the knowledge and understanding necessary to really appreciate what they're looking at, and how magnificent and amazing it truly is. Perhaps this is because after they identify a few of the Moon's most conspicuous features, many amateurs don't know where Many Lunar 100 selections are plainly visible in this image of the full Moon, while others require to look next. a more detailed view, different illumination, or favorable libration. North is up. S&T: Gary The Lunar 100 list is an attempt to provide Moon lovers with Seronik something akin to what deep-sky observers enjoy with the Messier catalog: a selection of telescopic sights to ignite interest and enhance understanding. Presented here is a selection of the Moon's 100 most interesting regions, craters, basins, mountains, rilles, and domes. I challenge observers to find and observe them all and, more important, to consider what each feature tells us about lunar and Earth history. -
The Moon After Apollo
ICARUS 25, 495-537 (1975) The Moon after Apollo PAROUK EL-BAZ National Air and Space Museum, Smithsonian Institution, Washington, D.G- 20560 Received September 17, 1974 The Apollo missions have gradually increased our knowledge of the Moon's chemistry, age, and mode of formation of its surface features and materials. Apollo 11 and 12 landings proved that mare materials are volcanic rocks that were derived from deep-seated basaltic melts about 3.7 and 3.2 billion years ago, respec- tively. Later missions provided additional information on lunar mare basalts as well as the older, anorthositic, highland rocks. Data on the chemical make-up of returned samples were extended to larger areas of the Moon by orbiting geo- chemical experiments. These have also mapped inhomogeneities in lunar surface chemistry, including radioactive anomalies on both the near and far sides. Lunar samples and photographs indicate that the moon is a well-preserved museum of ancient impact scars. The crust of the Moon, which was formed about 4.6 billion years ago, was subjected to intensive metamorphism by large impacts. Although bombardment continues to the present day, the rate and size of impact- ing bodies were much greater in the first 0.7 billion years of the Moon's history. The last of the large, circular, multiringed basins occurred about 3.9 billion years ago. These basins, many of which show positive gravity anomalies (mascons), were flooded by volcanic basalts during a period of at least 600 million years. In addition to filling the circular basins, more so on the near side than on the far side, the basalts also covered lowlands and circum-basin troughs. -
Apollo 12 Photography Index
%uem%xed_ uo!:q.oe_ s1:s._l"e,d_e_em'I flxos'p_zedns O_q _/ " uo,re_ "O X_ pea-eden{ Z 0 (D I I 696L R_K_D._(I _ m,_ -4 0", _z 0', l',,o ._ rT1 0 X mm9t _ m_o& ]G[GNI XHdV_OOZOHd Z L 0T'I0_V 0 0 11_IdVdONI_OM T_OINHDZZ L6L_-6 GYM J_OV}KJ_IO0VSVN 0 C O_i_lOd-VJD_IfO1_d 0 _ •'_ i wO _U -4 -_" _ 0 _4 _O-69-gM& "oN GSVH/O_q / .-, Z9946T-_D-VSVN FOREWORD This working paper presents the screening results of Apollo 12, 70mmand 16mmphotography. Photographic frame descriptions, along with ground coverage footprints of the Apollo 12 Mission are inaluded within, by Appendix. This report was prepared by Lockheed Electronics Company,Houston Aerospace Systems Division, under Contract NAS9-5191 in response to Job Order 62-094 Action Document094.24-10, "Apollo 12 Screening IndeX', issued by the Mapping Sciences Laboratory, MannedSpacecraft Center, Houston, Texas. Acknowledgement is made to those membersof the Mapping Sciences Department, Image Analysis Section, who contributed to the results of this documentation. Messrs. H. Almond, G. Baron, F. Beatty, W. Daley, J. Disler, C. Dole, I. Duggan, D. Hixon, T. Johnson, A. Kryszewski, R. Pinter, F. Solomon, and S. Topiwalla. Acknowledgementis also made to R. Kassey and E. Mager of Raytheon Antometric Company ! I ii TABLE OF CONTENTS Section Forward ii I. Introduction I II. Procedures 1 III. Discussion 2 IV. Conclusions 3 V. Recommendations 3 VI. Appendix - Magazine Summary and Index 70mm Magazine Q II II R ii It S II II T II I! U II t! V tl It .X ,, ,, y II tl Z I! If EE S0-158 Experiment AA, BB, CC, & DD 16mm Magazines A through P VII. -
Water on the Moon, III. Volatiles & Activity
Water on The Moon, III. Volatiles & Activity Arlin Crotts (Columbia University) For centuries some scientists have argued that there is activity on the Moon (or water, as recounted in Parts I & II), while others have thought the Moon is simply a dead, inactive world. [1] The question comes in several forms: is there a detectable atmosphere? Does the surface of the Moon change? What causes interior seismic activity? From a more modern viewpoint, we now know that as much carbon monoxide as water was excavated during the LCROSS impact, as detailed in Part I, and a comparable amount of other volatiles were found. At one time the Moon outgassed prodigious amounts of water and hydrogen in volcanic fire fountains, but released similar amounts of volatile sulfur (or SO2), and presumably large amounts of carbon dioxide or monoxide, if theory is to be believed. So water on the Moon is associated with other gases. Astronomers have agreed for centuries that there is no firm evidence for “weather” on the Moon visible from Earth, and little evidence of thick atmosphere. [2] How would one detect the Moon’s atmosphere from Earth? An obvious means is atmospheric refraction. As you watch the Sun set, its image is displaced by Earth’s atmospheric refraction at the horizon from the position it would have if there were no atmosphere, by roughly 0.6 degree (a bit more than the Sun’s angular diameter). On the Moon, any atmosphere would cause an analogous effect for a star passing behind the Moon during an occultation (multiplied by two since the light travels both into and out of the lunar atmosphere). -
Glossary of Lunar Terminology
Glossary of Lunar Terminology albedo A measure of the reflectivity of the Moon's gabbro A coarse crystalline rock, often found in the visible surface. The Moon's albedo averages 0.07, which lunar highlands, containing plagioclase and pyroxene. means that its surface reflects, on average, 7% of the Anorthositic gabbros contain 65-78% calcium feldspar. light falling on it. gardening The process by which the Moon's surface is anorthosite A coarse-grained rock, largely composed of mixed with deeper layers, mainly as a result of meteor calcium feldspar, common on the Moon. itic bombardment. basalt A type of fine-grained volcanic rock containing ghost crater (ruined crater) The faint outline that remains the minerals pyroxene and plagioclase (calcium of a lunar crater that has been largely erased by some feldspar). Mare basalts are rich in iron and titanium, later action, usually lava flooding. while highland basalts are high in aluminum. glacis A gently sloping bank; an old term for the outer breccia A rock composed of a matrix oflarger, angular slope of a crater's walls. stony fragments and a finer, binding component. graben A sunken area between faults. caldera A type of volcanic crater formed primarily by a highlands The Moon's lighter-colored regions, which sinking of its floor rather than by the ejection of lava. are higher than their surroundings and thus not central peak A mountainous landform at or near the covered by dark lavas. Most highland features are the center of certain lunar craters, possibly formed by an rims or central peaks of impact sites. -
User Guide to 1:250,000 Scale Lunar Maps
CORE https://ntrs.nasa.gov/search.jsp?R=19750010068Metadata, citation 2020-03-22T22:26:24+00:00Z and similar papers at core.ac.uk Provided by NASA Technical Reports Server USER GUIDE TO 1:250,000 SCALE LUNAR MAPS (NASA-CF-136753) USE? GJIDE TO l:i>,, :LC h75- lu1+3 SCALE LUNAR YAPS (Lumoalcs Feseclrch Ltu., Ottewa (Ontario) .) 24 p KC 53.25 CSCL ,33 'JIACA~S G3/31 11111 DANNY C, KINSLER Lunar Science Instltute 3303 NASA Road $1 Houston, TX 77058 Telephone: 7131488-5200 Cable Address: LUtiSI USER GUIDE TO 1: 250,000 SCALE LUNAR MAPS GENERAL In 1972 the NASA Lunar Programs Office initiated the Apollo Photographic Data Analysis Program. The principal point of this program was a detailed scientific analysis of the orbital and surface experiments data derived from Apollo missions 15, 16, and 17. One of the requirements of this program was the production of detailed photo base maps at a useable scale. NASA in conjunction with the Defense Mapping Agency (DMA) commenced a mapping program in early 1973 that would lead to the production of the necessary maps based on the need for certain areas. This paper is designed to present in outline form the neces- sary background informatiox or users to become familiar with the program. MAP FORMAT * The scale chosen for the project was 1:250,000 . The re- search being done required a scale that Principal Investigators (PI'S) using orbital photography could use, but would also serve PI'S doing surface photographic investigations. Each map sheet covers an area four degrees north/south by five degrees east/west. -
The W.A.S.P the Warren Astronomical Society Paper
Vol. 49, no. 11 November, 2018 The W.A.S.P The Warren Astronomical Society Paper President Jeff MacLeod [email protected] The Warren Astronomical Society First Vice President Jonathan Kade [email protected] Second Vice President Joe Tocco [email protected] Founded: 1961 Treasurer Ruth Huellmantel [email protected] P.O. Box 1505 Secretary Jerry Voorheis [email protected] Outreach Diane Hall [email protected] Warren, Michigan 48090-1505 Publications Brian Thieme [email protected] www.warrenastro.org Entire board [email protected] Photo credit: Joe Tocco 1 Society Meeting Times Astronomy presentations and lectures twice each month at 7:30 PM: First Monday at Cranbrook Institute of November Discussion Science. Group Meeting Third Thursday at Macomb Community College - South Campus Building E (Library) Come on over, and talk astronomy, space Note: for the rest of 2018, we are meeting in news, and whatnot! room E308, in building E. The Discussion Group meeting for November will be at Jon Blum’s home on Tuesday, November 20, at 7:00 PM. Jon has been Snack Volunteer hosting this every November for several years, Schedule so come and be part of the annual photo. Jon will provide lots of snacks, so please don’t Nov 5 Cranbrook Jim Shedlowsky bring any food or drinks. Jon’s home is in Nov 15 Macomb Riyad Matti Farmington Hills. Dec 3 Cranbrook Joe Tocco If you do not receive the address and directions If you are unable to bring the snacks on your in your email a week before this event, please scheduled day, or if you need to reschedule, email [email protected] for this information. -
Arxiv:0706.3947V1
Transient Lunar Phenomena: Regularity and Reality Arlin P.S. Crotts Department of Astronomy, Columbia University, Columbia Astrophysics Laboratory, 550 West 120th Street, New York, NY 10027 ABSTRACT Transient lunar phenomena (TLPs) have been reported for centuries, but their nature is largely unsettled, and even their existence as a coherent phenomenon is still controversial. Nonetheless, a review of TLP data shows regularities in the observations; a key question is whether this structure is imposed by human observer effects, terrestrial atmospheric effects or processes tied to the lunar surface. I interrogate an extensive catalog of TLPs to determine if human factors play a determining role in setting the distribution of TLP reports. We divide the sample according to variables which should produce varying results if the determining factors involve humans e.g., historical epoch or geographical location of the observer, and not reflecting phenomena tied to the lunar surface. Specifically, we bin the reports into selenographic areas (300 km on a side), then construct a robust average count for such “pixels” in a way discarding discrepant counts. Regardless of how we split the sample, the results are very similar: roughly 50% of the report count originate from the crater Aristarchus and vicinity, 16% from Plato, 6% from recent, major impacts (Copernicus, ∼ ∼ Kepler and Tycho - beyond Aristarchus), plus a few at Grimaldi. Mare Crisium produces a robust signal for three of five averages of up to 7% of the reports (however, Crisium subtends more than one pixel). The consistency in TLP report counts for specific features on this list indicate that 80% of the reports arXiv:0706.3947v1 [astro-ph] 27 Jun 2007 ∼ are consistent with being real (perhaps with the exception of Crisium). -
Explore the Moon with Binoculars
THE ROYAL ASTRONOMICAL SOCIETY OF CANADA presents: Explore the Moon with binoculars photo by Ian Corbett, Liverpool, Nova Scotia an RASC observing program with certificate for beginning observers © Royal Astronomical Society of Canada 2016 Explore the Moon (binocular version) Table of Contents Preface...............................................................................................2 Introduction: Why Observe the Moon?.............................................3 Suggested Resources .........................................................................3 Planning and Observing ....................................................................3 Recording Observations and Applying for your Certificate .............5 Maps ..................................................................................................6 Feature Index Table.........................................................................10 Preface The idea behind Explore the Moon (EtM) surfaced in 2011–12 during casual conversations between RASC members Dave Chapman (Halifax Centre), Patrice Scattolin (Centre francophone de Montréal), and Kevin Dunphy (New Brunswick Centre). We were looking for a more elementary introduction to lunar observing than the more daunting RASC Isabel Williamson Lunar Observing Program (directed at intermediate-to-advanced observers. We also identified a general need for a beginner’s observing program one step up from the novice-level Explore the Universe. Such a program would provide an opportunity for observers to gain -
Thumbnail Index
Thumbnail Index The following five pages depict each plate in the book and provide the following information about it: • Longitude and latitude of the main feature shown. • Sun’s angle (SE), ranging from 1°, with grazing illumination and long shadows, up to 72° for nearly full Moon conditions with the Sun almost overhead. • The elevation or height (H) in kilometers of the spacecraft above the surface when the image was acquired, from 21 to 116 km. • The time of acquisition in this sequence: year, month, day, hour, and minute in Universal Time. 1. Gauss 2. Cleomedes 3. Yerkes 4. Proclus 5. Mare Marginis 79°E, 36°N SE=30° H=65km 2009.05.29. 05:15 56°E, 24°N SE=28° H=100km 2008.12.03. 09:02 52°E, 15°N SE=34° H=72km 2009.05.31. 06:07 48°E, 17°N SE=59° H=45km 2009.05.04. 06:40 87°E, 14°N SE=7° H=60km 2009.01.10. 22:29 6. Mare Smythii 7. Taruntius 8. Mare Fecunditatis 9. Langrenus 10. Petavius 86°E, 3°S SE=19° H=58km 2009.01.11. 00:28 47°E, 6°N SE=33° H=72km 2009.05.31. 15:27 50°E, 7°S SE=10° H=64km 2009.01.13. 19:40 60°E, 11°S SE=24° H=95km 2008.06.08. 08:10 61°E, 23°S SE=9° H=65km 2009.01.12. 22:42 11.Humboldt 12. Furnerius 13. Stevinus 14. Rheita Valley 15. Kaguya impact point 80°E, 27°S SE=42° H=105km 2008.05.10.