Con mucho orgullo presentamos nuestra participación en una nueva edición de “The Lunar Observer”, la revista de observación lunar más importante del mundo, con la que colaboramos permanentemente desde agosto de 2015, ya van 60 meses seguidos de observaciones. Además de ser un aniversario, es un número importante porque se hace una expresa mención y reconocimiento a nuestro programa “Lunar 100”, como ya se había hecho en el número de mayo de 2020. Un reconocimiento que nos enorgullece y nos compromete a seguir en el camino de ser una asociación con pocos medios materiales pero de enorme prestigio intelectual (no estuvimos muy modestos, eh?).

La revista se puede descargar de la web de ALPO: y también del siguiente link:

En la portada se puede observar la importancia de nuestros aportes en este número (ya publicados en entradas anteriores):

In This Issue ALPO Conference November 6-7, 2020 2 Lunar Calendar July 2020 3 An Invitation to Join ALPO 3 Observations Received 4 By the Numbers 7 Submission Through the ALPO Image Achieve 4 When Submitting Observations to the ALPO Lunar Section 9 Call For Observations Focus-On 9 Focus-On Announcement 10 2020 ALPO The Walter H. Haas Observer’s Award 11 Sirsalis T, R. Hays, Jr. 12 Long Crack, R. Hill 13 Musings on Theophilus, H. Eskildsen 14 Almost Full, R. Hill 16 Northern Moon, H. Eskildsen 17 Northwest Moon and Horrebow, H. Eskildsen 18 A Bit of Thebit, R. Hill 19 Euclides D in the Landscape of the Mare Cognitum (and Two Kipukas?), A. Anunziato 20 On the South Shore, R. Hill 22 Focus On: The Lunar 100, Features 11-20, J. Hubbell 23 Recent Topographic Studies 43 Lunar Geologic Change Detection Program T. Cook 120 Key to Images in this Issue 134 These are the modern Golden Days of lunar studies in a way, with so many new resources available to lunar observers. Recently, we have mentioned Robert Garfinkle’s opus Luna Cognita and the new lunar map by the USGS. This month brings us the updated, 7th edition of the Virtual Moon Atlas. These are all wonderful resources for your lunar studies. This month, The Lunar Observer features Jerry Hubbell’s Focus On article, Lunar 100, Features 11-20. This has proven to be an incredibly popular series! My new page By the Numbers (page 7) tells of 34 observers submitting 215 lunar observations for this issue. Many of those images grace these pages, and all are in the ALPO Lunar Image Gallery. Also be sure to check out page 10, the 2020 ALPO Walter H. Haas Observer’s Award. All this, plus articles by Alberto Anunziato, Rik Hill, Howard Eskildsen and Tony Cook. Enjoy and be safe.

La Sección “Focus On” de este mes correspondió a los accidentes lunares pertenecientes a la lista del Lunar 100 en los números 11 a 20. El reconocimiento a nuestro programa se encuentra en las páginas 40/41:

Once again, we had a very large response to our request for images and drawings for the second set of 10 features of the Lunar 100 (L11 – L20). As in the last article, we again had images taken with cellphone cam-eras. I am grateful for all the submissions. We had a total of 87 images and drawings submitted from over 20 astronomers. Most of the images came from Alberto Anunziato’s groups, SAO-SLA, and LIADA. Previ-ously he prefaced the images he sent on behalf of his group this way:

“LUNAR 100 PROGRAM Sociedad Astronómica Octante-Sociedad Lunar Argentina

When we found out that the next objectives of the Focus On Section would be the features listed in the Charles Wood’s famous Lunar 100, the members from Sociedad Lunar Argenti-na (SLA) and Sociedad Astronómica Octante (SAO) of the República Oriental del Uruguay, we considered interesting to join the initiative of “The Lunar Observer” (TLO) and therefore we launched our Lunar 100 Program, under the auspices of the Lunar Section of the Liga Iberoamericana de Astronomía (LIADA). The objective is twofold. We will report the images submitted to the program to “The Lunar Observer”. And we will also publish them in all the media of SLA, SAO and LIADA. We think it is a great opportunity to stimulate amateur lu-nar observation and if the call is successful, we can dream of some final joint publication.”

We look forward to future drawings and images submitted by ALPO, SLA, SAO, LIADA members. Please share with us any images you have in your image catalog, we hope to see everyone participate in these Focus On articles.

– Jerry Hubbell

En la galería de imágenes destacadas que ilustran los lugares 11 a 20, la mitad son imágenes de nuestro programa, pertenecientes a Marcelo Gundlach (Bolivia), Sergio Babino (Uruguay), Francisco Alsina Cardinali (Argentina) y Alberto Anunziato (Argentina):

Aristarchus-L11-17 (Anunziato):

Proclus-L12 (Babino):

Rupes Recta-L15 (Alsina Cardinali):

Petavius-L16 (Anunziato):

Mare Serenitatis L-18 (Mojica):

Vallis Alpis L-19 (Mojica):

Posidonius L-20 (Anunziato):

Aristarchus por Alsina Cardinali (SLA-Argentina)

Aristarchus por Desiré Godoy (SLA-Argentina)

Aristarchus por Alberto Anunziato (SLA-Argentina)

Aristarchus por Rafael Lara Munoz (SLA-Guatemala):

Proclus por Francisco Alsina Cardinali:

Proclus por Martín Queirolo (SAO-Uruguay):

Proclus por Francisco Alsina Cardinali (SLA-Argentina):

Proclus por Fernando Surá (SLA-Argentina):

Proclus por Desiré Godoy (SLA-Argentina):

Gassendi por Francisco Alsina Cardinali (SLA-Argentina):

Gassendi por Alberto Anunziato (SLA-Argentina):

Gassendi por Desire Godoy (SLA-Argentina):

Gassendi por Jairo Chavez (SLA-Colombia):

Gassendi por Sergio Babino (SAO-Uruguay):

Gassendi por Carlos Lobato (SAO-Uruguay):

Gassendi por Marcelo Mojica (SLA-Bolivia):

Sinus Iridum por Martín Queirolo (SAO-Uruguay):

Sinus Iridum por Jairo Chavez (Sla-Colombia):

Sinus Iridum por Francisco Alsina Cardinali (SLA-Argentina):

Sinus Iridum por Fernando Gomez (SAO_Uruguay):

Sinus Iridum por Marcelo Mojica Gundlach (SLA-Bolivia):

Sinus Iridum por Cyntia Olivera (SLA-Argentina):

Rupes Recta por Raúl Podestá (SLA-Argentina):

Rupes Recta por Martín Queirolo (SAO-Uruguay):

Petavius por Alberto Anunziato (SLA-Argentina):

Vallis Schröteri por Francisco Alsina (SLA-Argentina):

Vallis Schröteri por Sergio Babino (SAO-Uruguay):

Vallis Schröteri por Jairo Chavez (SLA-Colombia):

Mare Serenitatis por Martin Queirolo (SAO-Uruguay):

Mare Serenitatis por Jairo Chavez (SLA-Argentina):

Mare Serenitatis por Francisco Alsina (SLA-Argentina):

Mare Serenitatis por Sergio Babino (SAO-Uruguay):

Vallis Alpis por Alberto Anunziato (SLA-Argentina):

Vallis Alpis por Marcelo Mojica (SLA-Bolivia):

Posidonius por Francisco Alsina (SLA-Argentina):

Copernicus y Montes Appeninus por Rafael Lara Muñoz (SLA-Guatemala):

Tycho por Fernando Gimenez (SAO-Uruguay):

Luna menguante por Leonardo Colombo (SLA-Argentina):

Luz Cenicienta por Rafael Lara Muñoz (SLA-Guatemala):

En la Sección “Lunar Geological Change Detection Program” (páginas 120 y siguientes), se reportan nuestras observaciones:


Reports have been received from the following observers for May: Jay Albert (Lake Worth, FL, USA – ALPO) observed: Agrippa, Aristarchus, Atlas, Censorinus, Copernicus, Daniell, Herodotus, Kepler, Plato, Ross D, and Tycho. Alberto Anunziato (Argentina – SLA) observed: Alphonsus, Bullialdus, Daniel, Gassen-di, Hyginus N, Messier, Plato, Proclus, Ross D and Tycho. Aylen Borgatello (Argentina – AEA) imaged Hy-ginus N. Luis Francisco Alsina Cardinali (SLA) imaged: Messier, Plato, Plato, Ross D, Tycho and several features. Maurice Collins (New Zealand – ALPO/BAA/RASNZ) imaged: Aristarchus, Bailly, Copernicus, earthshine, Grimaldi, Hevelius, Kepler, Mare Humorum, Plato, Schickard, Tycho and several features. Tony Cook (ALPO/BAA) videoed the Moon in the thermal IR and imaged several features in near-IR wavebands. Rob Davies (Mid-West Wales, UK – BAA/NAS) imaged the Montes Apenninus and several features. Daryl Dobbs (Risca, UK – BAA) observed: Mare Frigoris, Maurolycus, and Ptolemaeus. Valerio Fontani (Italy – UAI) made a time lapse video of: Vallis Schroteri. Walter Elias (Argentina – AEA) imaged Copernicus, Pla-to, Ross D and Tycho. Les Fry (Mid-West Wales, UK – NAS) imaged: Albategnius, Bailly, Bullialdus, Byr-gius, Cassini, de Vico, Delambre, Hipparchus, Hommel, Mare Crisium, Mare Nubium, Messier, Plato, Rein-hold, Riccius, Theophilus, Tycho, and Walther. Abel Gonzalez Cian (Argentina – AEA) imaged Alphonsus and Copernicus. Facundo Gramer (Argentina – AEA) imaged Tycho. Rik Hill (Tucson, AZ, USA – ALPO/BAA) imaged Copernicus, Fracastorius, Gassendi, Grimaldi and Gutenburg. Leatherbarrow (Sheffield, UK – BAA) imaged: Fontenelle, Maurolycus, and Sinus Iridum. Nigel Longshaw (Oldham, UK – BAA) observed: Daniell, earthshine, Mons Piton and Proclus. Gabriel Re (Argentina – AEA) imaged Messier, Plato and Tor-ricelli B. Leandro Sid (Argentina – AEA) imaged Hyginus. Phil Sheperdson (York, UK – BAA) observed/imaged Ptolemaeus. Trevor Smith (Codnor, UK – BAA) observed: Aristarchus, Bailly, Plato and Proclus. Bob Stuart (Rhayader, UK – BAA/NAS) imaged: Agrippa, Albategnius, Alphonsus, Arzachel, Birt, Bulli-aldus, Cassini, Cepheus, Clavius, Copernicus, Cuvier, Cyrillus, Demonax, Deslandres, Eratosthenes, Fernelius, Geminus, Gutenberg, Heraclitus, Hercules, Hyginus, Jansen, Janssen, Kaiser, Lacus Somniorum, Langrenus, Montes Apenninus, Nearch, Petavius, Piccolomini, Plato, Posidonius, Ptolemaeus, Rheita, Sinus Amoris, Theophilus, Torricelli, Triesnecker, Tycho, Vallis Alpes, Vlacq, Werner and several features. Fran-co Taccogna (Italy – UAI) imaged: Herodotus, and Vallis Schroteri. David Teske (Louisville, MS, USA – ALPO) imaged Herodotus. Gary Varney (Pembroke Pines, FL, USA – ALPO) imaged: Bullialdus, Clavius, Plato, Sinus Iridum Tycho and several features. Fabio Verza (Italy – UAI) imaged: Herodotus, Mare Frigor-is, and Vallis Schrotri. Derick Ward (Swindon, UK – BAA) imaged: Alphonsus, Autolycus, Daniell, Mons Piton, Plato, Proclus, and Ross D. Luigi Zanatta (Italy – UAI) imaged: Herodotus.

Anthony Cook comenta una observación de Alberto Anunziato de Daniell para compararla con reporte de FLT de 1979:

Figure 3. Daniell. (Background) An image by Derick Ward (BAA) taken on 2020 May 02 UT 21:52-21:54 and orien-tated with north towards the top. (Bottom Left) A sketch by John Saxton (BAA) made on 1979 Jul 04 UT 20:40-21:19 orientation presumably with north towards the bottom? (Right) A sketch by Alberto Anunziatio made on 2020 May 02 UT 22:20-22:35 with an “N” indicating where north is – the numbers indicate relative brightness.

Sergio Babino

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