A publication of the Lunar Section of ALPO Edited by David Teske: [email protected] 2162 Enon Road, Louisville, Mississippi, USA Recent back issues: http://moon.scopesandscapes.com/tlo_back.html June 2020 Online readers, click on images In This Issue for hyperlinks. ALPO Conference Announcement 2 Lunar Calendar May 2020 3 An Invitation to Join ALPO 3 Observations Received 4 By the Number 6 Submission Through the ALPO Image Achieve 7 When Submitting Observations to the ALPO Lunar Section 8 Call For Observations Focus-On 8 Focus On Announcement 9 Euclides and Euclides Zeta, R. Hayes 10 The “X”, R. Hill 11 Von Braun, R. Hayes 12 Nicolas Again, R. Hill 13 Norman and Euclides C, Twin Craters, A. Anunziato 14 A Humid Place on the Moon, R. Hill 15 Landing in the Bay of Luna, D. Teske 16 Never Gets Old, R. Hill 19 A Possible Explanation for the Bright Spots in Mutus F. S. Babino and A. Anunziato 20 East of Nectar, R. Hill 23 Recent Topographic Studies 24 Lunar Geologic Change Detection Program T. Cook 78 Key to Images in this Issue 90 In this issue of The Lunar Observer, you will find a wide variety of lunar topics discussed, including topo- graphic forays by Rik Hill, Robert Hayes, Jr. and David Teske. Sergio Babino and Alberto Anunziato ex- plore lunar geologic change with an in-depth study of bright spots seen in crater Mutus F, as discussed in last month’s Lunar Geologic Change by Tony Cook. Tony Cook brings us another in-depth discussion about Lunar Geologic Change this month. A few new things to be on the look-out for. On page 6, you will see “By the Numbers” about our observ- ers locations, observations and telescopes. Also, if you have not yet heard of the book Luna Cognita by Robert Garfinkle, check it out! Also, the USGS published a new lunar map, available at https:// www.usgs.gov/news/usgs-releases-first-ever-comprehensive-geologic-map-moon which is really nice! The Lunar Observer/June 2020/ 1 ALPO Conference November 6-7, 2020 Interested parties are hereby invited to submit papers and research posters on the astronomy-related topics of their choice for presentation at the next ALPO conference to be held jointly with the Georgia Regional Astronomers Meeting (GRAM) when that group meets on November 6 and 7, 2020. This will be the second time the ALPO has participated with the GRA group, the first time being the au- tumn of 2017. Like last time, the was made after an online discussion and vote by the ALPO board of directors. This year's conference will be at North Georgia College in Dalton, Georgia, approximately a one-and-a-half -hour drive north of downtown Atlanta. The ALPO portion of the conference will commence with the ALPO board meeting on Friday, November 6, to be followed by an informal gathering that evening with a lecture, social gathering with snacks and observing at the school’s on-campus observatory. All papers will be presented the following day, Saturday, November 7, between 9 a.m. and 5 p.m. Also as we did in 2017, there will be an ALPO dinner on Saturday evening where the Walter Haas Observ- ing Award and the Peggy Haas Service Award will be presented. We have been allotted up to at least four (4) time slots for ALPO papers of no more than 15 minutes in length; the preferred method is 12 minutes for the paper presentation plus 3 minutes for follow-up ques- tions. The preferred format is Microsoft PowerPoint. We have also been invited to participate with wall-mounted research posters which are also commonly done at academic and professional conferences everywhere. Participants are encouraged to submit research papers, presentations, and experience reports concerning various aspects of Earth-based observational astronomy. Suggested topics for papers and presentations in- clude the following: • New or ongoing observing programs and studies, specifically, how those programs were designed, im- plemented and continue to function. • Results of personal or group studies of solar system or extra-solar system bodies. • New or ongoing activities involving astronomical instrumentation, construction or improvement. Challenges faced by Earth-based observers such as changing interest levels, deteriorating observing condi- tions brought about by possible global warming, etc. A hard-copy version of your paper should be made available for future web site publication. More details about paper presentations and to whom they should be sent will be published in the Summer issue of the ALPO Journal for release in early June. The Lunar Observer/June 2020/ 2 Lunar Calendar June 2020 Date Time UT Event June 2020 1 Lunar south limb most exposed -6.7o 3 0400 Moon at perigee, 364,366 km 5 1912 Full Moon, penumbral lunar eclipse 8 Moon greatest southern declination -24.0o 9 0200 Saturn 3o north of the Moon 9 Lunar east limb most exposed +5.9o 13 0 Mars 3o north of the Moon 13 0624 Last Quarter Moon 14 Lunar north limb most exposed +6.9o 15 0100 Moon at apogee, 404,595 km 19 0900 Venus 0.7o south of Moon, occultation East Canada to Mongolia 21 0641 New Moon, lunation 1206, annular solar eclipse 22 Moon greatest northern declination +24.1o 22 Lunar west limb most exposed -5.1o 28 0816 First Quarter Moon 8 Lunar south limb most exposed -6.8o 30 0200 Moon at perigee, 368,958 km The Lunar Observer welcomes all lunar related images, drawings, articles, reviews of equipment and reviews of books. You do not have to be a member of ALPO to submit material, though membership is highly encouraged. Please see below for membership and near the end of The Lunar Observer for submission guidelines. Comments and suggestions? Please send to David Teske, contact information page 1. Need a hard copy, please contact David Teske. AN INVITATION TO JOIN THE A.L.P.O. The Lunar Observer is a publication of the Association of Lunar and Planetary Observers that is available for access and participation by non- members free of charge, but there is more to the A.L.P.O. than a monthly lunar newsletter. If you are a nonmember you are invited to join our organization for its many other advantages. We have sections devoted to the observation of all types of bodies found in our solar system. Section coordinators collect and study members’ observations, correspond with observers, encourage beginners, and contribute reports to our Jour- nal at appropriate intervals. Our quarterly journal, The Journal of the Association of Lunar and Planetary Observers-The Strolling Astronomer, contains the results of the many observing programs which we sponsor including the drawings and images produced by indi- vidual amateurs. Additional information about the A.L.P.O. and its Journal is on-line at: http://www.alpo-astronomy.org. I invite you to spend a few minutes browsing the Section Pages to learn more about the fine work being done by your fellow amateur astronomers. To learn more about membership in the A.L.P.O. go to: http://www.alpo- astronomy.org/main/member.html which now also provides links so that you can enroll and pay your membership dues online. The Lunar Observer/June 2020/ 3 Lunar Topographic Studies Acting Coordinator – David Teske - [email protected] Assistant Coordinator – William Dembowski - [email protected] Assistant Coordinator – Jerry Hubbell – [email protected] Assistant Coordinator-Wayne Bailey– [email protected] Website: http://moon.scopesandscapes.com/ Observations Received June 2020 Many thanks for all these observations, images, and drawings. Name Location and Organization Article/image Alberto Anunziato Paraná, Argentina Drawing and article Euclides C and Norman. Alberto Anunziato and Sergio Ba- Paraná, Argentina and Montevideo, Images and article A Possible Ex- bino Uruguay planation of Bright Spots in Mutus F. Aylen Borgatello AEA - Oro Verde, Entre Rios, Ar- Image of Hyginus N, Atlas and gentina Mons La Hire. Victor Cabrera-Peláez, Puebla, Mexico Image of size comparison of Moon at apogee and perigee. Francisco Alsina Cardinali Oro Verde, Argentina, SLA- Images of Langrenus, Atlas, Cassi- LIADA ni, Plato, Tycho (2), Messier (2), Taruntius and Ross D. Jairo Chavez Popayán, Colombia Image of 8% waxing crescent Moon, waxing gibbous Moon (3), Copernicus, Tycho, Mare Vaporum, Langrenus and Full Moon. Abel David Emiliano Gonzalez AEA - Oro Verde, Entre Rios, Ar- Images of Alphonsus (3), Coperni- Cian gentina cus, Aristarchus (2). Walter Ricardo Elias AEA- Oro Verde, Entre Rios, Ar- Images of Alphonsus, Copernicus gentina (3), Plato, Tycho, Kepler, Waning Gibbous Moon and Picard. Howard Eskildsen Ocala, Florida, USA Image of Herschel to Birt, Tycho, Copernicus, Mare Imbrium, the Serpentine Ridge, Lamont, the “western Chain” Marcelo Mojica Gundlach Cochabamba, Bolivia Images of Maginus, Vallis Alpes, Alphonsus, Bessel, Rima Hyginus, Cassini, Hyginus, Aristoteles, Jul- ius Caesar and Maurolycus. Robert Hayes Jr. Worth, Illinois, USA Article and drawing Euclides and Euclides Zeta and Von Braun. The Lunar Observer/June 2020/ 4 Observations Received June 2020 Name Location and Organization Article/image Rik Hill Tucson, Arizona, USA Article and images Nicolas Again, The “X”, A Humid Place On the Moon, Never Gets Old and East of Nectar, images of Clavius, Coper- nicus and Eratosthenes, Barrow, Cassini and the Caucasus, Apenni- nus, Alpes, Aristoteles to Hercules, Aristarchus to Mairan, Hainzel, Gassendi, Hadley, Mare Smythii, Lacus Excellentiae, Humboldt, Gemma Frisius, Ramsden, Marius, Mare Australe, Posidonius, Peek, Licetus and Thebit. Gabriel Jaimes Cochabamba, Bolivia Images of Tycho and Moon, Mars, Jupiter and Saturn. Luigi Morrone SNdR Luna UAI Agerola, Italy Images of Aristarchus, Bayer, Gas- sendi, Marius, Moretus, Schickard, Schiller and Sinus Iridum.