Foto Ariel Cappelletti (Ar)

En el mes en que cumplimos el hito de ser invitados a disertar en la conferencia Anual 2020 de la Association of Lunar and Planetary Observers del 2 y 3 de octubre, celebramos 63 meses seguidos de observaciones reportadas y aprobadas por ALPO y publicadas en su revista especializada de temática lunar: “The Lunar Observer”.

La revista se puede descargar de la web de ALPO:  http://www.alpo-astronomy.org/gallery3/var/albums/Lunar/The-Lunar-Observer/2020/tlo202010.pdf?m=1601518621

En la portada se referencia un artículo aparecido en este número (ya publicados en una entrada anterior):

In This Issue 2020 ALPO Conference Announcement 2 Lunar Calendar October 2020 3 An Invitation to Join ALPO 3 Observations Received 4 By the Numbers 5 Submission Through the ALPO Image Achieve 6 When Submitting Observations to the ALPO Lunar Section 7 Call For Observations Focus-On 7 Focus-On Announcement 8 Mare Humorum Region, H. Eskildsen 9 Northland, R. Hill 10 Philolaus, Land of Adventure, A. Anunziato 11 Follow Those Rays, D. Teske 13 A Load of Bullialdus, R. Hill 15 Recent Topographic Studies 16 Lunar Geologic Change Detection Program T. Cook 55 Key to Images in this Issue 62 Page 52 Page 50 Mars Attacks! This month the members of ALPO will focus their attention on the opposition of Mars. This will be our best view of Mars for many years to come, so steal a look at the Red Planet while gazing at the Moon! I really should title this Moon Attacks Mars, as we have a number of wonderful images of conjunctions and even occultations of Mars by the Moon. Check out the Recent Topographic Studies for these images. This issue of The Lunar Observer contains articles on the Moon from Alberto Anunziato, Howard Eskildsen, Rik Hill and David Teske. Also, there are many crisp images of the Moon to study. Tony Cook has another very detailed look at Lunar Geologic Change Detection. October 20, 2020 is the deadline for submissions for the next Focus-On article. In the northern hemisphere, the autumn is a most pleasant time to get out and enjoy the fall skies. Be safe out there and clear skies.

En “Lunar topographical studies” se mencionan las siguientes observaciones (pág.4):

Observations Received: Name Location and Organization Article/image Alberto Anunziato Oro Verde, Argentina Article and image Philolaus, Land of Adventure. Sergio Babino Montevideo, Uruguay Images of the Moon and Mars. Ariel Cappelletti Córdoba, Argentina, SLA Images of Clavius, Copernicus, Eratosthenes, Gassendi, Montes Alpes and Tycho. Francisco Alsina Cardinalli Oro Verde, Argentina, SLA Images of Sinus Iridum and Anaxagoras. Jairo Chavez Popayán, Colombia Image of the Full Moon. Michel Deconinck Aquarellia Observatory, Artignoscsur-Verdon Provence, France Pastels of the Moon-Mars conjunction, Archimedes, Aristarchus, Fracastorius, Mare Frigoris, Messier and Schiller Howard Eskildsen Ocala, Florida, USA Article and image of Mare Humorum Region, image of Marius and the northwest Moon. Diego Etchevers Montevideo, Uruguay Image of the Moon and Jupiter. Desiré Godoy Oro Verde, Argentina, SLA Images of Parrot and Eudoxus. Isbel Gonzalez Roselle, New Jersey, USA Images of Plato to Aristoteles, Altai to Theophilus, Maurolycus to Piccolomini, Copernicus, Plato to Anaxagoras and Tycho. Guilherme Grassmann Image of occultation of Mars by Moon. Rik Hill Tucson, Arizona, USA Image and article Northland. Richard Martin Pando, Uruguay Images of the Moon and Mars conjunction (3). Raúl Roberto Podestá SLA, Formosa, Argentina Images of the Moon and Mars occultation (7). Sid, Leandro AEA, Oro Verde, Argentina Images of the Moon and Mars Conjunction (2), Picard, waxing gibbous Moon, Proclus (3), Gassendi and Herodotus. David Teske Louisville, Mississippi, USA Article and image Follow those Rays. Fabio Verza SNdR Luna UAI – Italy Images of the Aepinus (2), de la Rue, Condorcet, Cleomedes, Geminus, Langrenus, Mare Crisium (2), Mare Humboldtianum, Mercurius, Messala, Messier (3), Petermann, Petavius, Xenophanes, Aristoteles, Atlas, Copernicus (2), Endymion, Eudoxus, Janssen, Julius Caesar, Lacus Mortis, Lacus Spei, Mare Marginis, Maurolycus, Posidonius, Theophilus, Plato and Sinus Iridum.

Y se seleccionaron para ilustrar la sección imágenes de:

Ariel Cappelletti:

Francisco Alsina Cardinali:

Sergio Babino

Desiré Godoy

Jairo Chavez:

Raúl Roberto Podestá:

Richard Martin

Diego Etchevers:

En la Sección “Lunar Geological Change Detection Program” (páginas 55 y siguientes), se reportan nuestras observaciones:

Level 1 – All Reports received for August: Jay Albert (Lake Worth, FL, USA – ALPO) observed: Birt, Copernicus, Hyginus, Mons Piton, Plato, Posidonius, Promontorium Agassiz, Theophilus and Tycho. Alberto Anunziato (Argentina – SLA) observed: Biot, earthshine, and Posidonius A. Walter Elias and other AEA team members (Argentina) imaged: Aristarchus. Valerio Fontani (Italy – UAI) imaged: Mons Pico and Tycho. Desiré Godot (Argentina – SLA) imaged: Eudoxus. Rik Hill (Tucson, AZ, USA – ALPO/BAA) imaged: Endymion and Meton. Trevor Smith (Codnor, UK – BAA) observed: Plato and Plinius.

Level 2:

Eudoxus: On 2020 Aug 28 UT 23:45 Desiré Godoy (SLA) imaged this crater, using a 20cm refractor, and a QHY5-II camera with a 742nm filter, under similar illumination and similar viewing angle to the following report: On 1882 Jan 29 at UT 17:00-17:30 an unknown observer noted an unusual shadow in Eudoxus crater. The Cameron 1978 catalog ID=227 and the weight=2. Reference: Sirius Vol 15, 167, 1882. The ALPO/BAA weight=2. Figure 3. Eudoxus as imaged by Desiré Godoy (SLA) on 2020 Aug 28 UT 23:45. Orientated with north towards the top. As you can see from Fig 3, there is nothing unusual in the shadow appearance in this crater. Alas I cannot find the Sirius journal on-line and so cannot glean much more information about this report. We do not even know in which country the observer was? For now, I shall leave the ALPO/BAA weight at 2.

Level 3:

Biot: On 2020 Aug 23 UT 21:45-22:00 Alberto Anunziato (SLA) observed visually this crater under similar illumination to the following report: On 1969 Jul 19 at UT 16:00-18:01 Azevedo at al. (Joao Pessoa, PB, Brazil, 8″ reflector) saw that the west wall of Biot was unusually bright. Had seen it without this condition several months earlier. This was from the Apollo 11 watch. Jose da Silva says that this was not a LTP as the observers were inexperienced. The Cameron 1978 catalog ID=1163 and weight=0. The ALPO/BAA weight=1. Alberto, using a 105 mm. Maksutov-Cassegrain (Meade EX 105), at x154, found that the west wall of Biot was very bright but that it looked normal, indeed very similar to the west wall of Biot A. We shall therefore lower the weight from 1 to 0 and remove it from the ALPO/BAA LTP catalog.

Artículo original de Alberto Anunziato (LIADA-SLA)

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