Según Wikipedia:
“Dorsum (en plural Dorsa), es una cresta o elevación del terreno de forma longitudinal en la superficie de un planeta, satélite o asteroide. Es una designación puramente morfológica, independientemente de la causa de su formación. En la Luna suele recibir la denominación de cresta arrugada, por su semejanza con una arruga en la piel o en la ropa. Están ubicadas principalmente en los mares, y se cree que son debidas en su mayor parte a la compresión de los flujos de lava durante los últimos estadios de enfriamiento”.
Esta son las imágenes que seleccionamos de los archivos de la Sección Lunar de la AEA para la sección Focus On de noviembre en “The Lunar Observer”:
Name and location of observer: Desiré Godoy (Oro Verde, Argentina).
Name of feature: DORSA IN MARE HUMORUM.
Date and time (UT) of observation: 12-10-2016-02:04.
Filter: Astronomik ProPlanet 742 IR-pass.
Size and type of telescope used: 250 mm. Schmidt-Cassegrain (Meade LX 200).
Medium employed (for photos and electronic images): Canon Eos Digital Rebel XS.
Name and location of observer: Luis Francisco Alsina Cardinalli (Oro Verde, Argentina).
Name of feature: DORSA IN OCEANUS PROCELLARUM.
Date and time (UT) of observation: 12-11-2016-03:17.
Filter: Astronomik ProPlanet 742 IR-pass.
Size and type of telescope used: 250 mm. Schmidt-Cassegrain (Meade LX 200).
Medium employed (for photos and electronic images): Canon Eos Digital Rebel XS.
Name and location of observer: Luis Francisco AlsinaCardinalli (Oro Verde, Argentina).
Name of feature: DORSA IN MARE SERENITARIS. DORSA SMIRNOV. DORSA LISTER. DORSA NICOL.
Date and time (UT) of observation: 05-14-2016-02:32.
Filter: Astronomik ProPlanet 742 IR-pass.
Size and type of telescope used: 250 mm. Schmidt-Cassegrain (Meade LX 200).
Medium employed (for photos and electronic images): QHY5-II.
Name and location of observer: Luis Francisco AlsinaCardinalli (Oro Verde, Argentina).
Name of feature: DORSA IN MARE SERENITARIS. DORSA SMIRNOV. DORSA LISTER. DORSA NICOL.
Date and time (UT) of observation: 05-14-2016-02:37.
Filter: Astronomik ProPlanet 742 IR-pass.
Size and type of telescope used: 250 mm. Schmidt-Cassegrain (Meade LX 200).
Medium employed (for photos and electronic images): QHY5-II.
Name and location of observer: Luis Francisco Alsina Cardinalli (Oro Verde, Argentina).
Name of feature: DORSA NEAR THEOPHILUS.
Date and time (UT) of observation: 01-15-2016-00:10.
Size and type of telescope used: 250 mm. Schmidt-Cassegrain (Meade LX 200).
Magnification (for sketches): 106 x (with Telextender).
Filter (if used) : None.
Medium employed (for photos and electronic images): Canon Eos Digital Rebel XS.
Name and location of observer: Luis Francisco Alsina Cardinalli (Oro Verde, Argentina).
Name of feature: DORSA IN SINUS AESTUUM.
Date and time (UT) of observation: 12-20-2015-00:36.
Size and type of telescope used: 250 mm. Schmidt-Cassegrain (Meade LX 200).
Magnification (for sketches): 168 x (with Telextender).
Filter (if used) : None.
Medium employed (for photos and electronic images) : Canon Eos Digital Rebel XS.
Name and location of observer: Luis Francisco AlsinaCardinalli (Oro Verde, Argentina).
Name of feature: DORSUM NEAR RUPES RECTA.
Date and time (UT) of observation: 09-10-2016-22:51.
Size and type of telescope used: 279mm SCT (Celestron 11″ Edge HD)
Medium employed (for photos and electronic images): QHY5-II.
Name and location of observer: Alberto Anunziato (Oro Verde, Argentina).
Name of feature: DORSUM ZIRKEL-DORSUM HEIM.
Date and time (UT) of observation: 02-24-2014-06:25.
Size and type of telescope used: 250 mm. Schmidt-Cassegrain (Meade LX 200).
Filter (if used) : None.
Medium employed (for photos and electronic images) :Webcam Phillips SPC900NC
Name and location of observer: Alberto Anunziato (Oro Verde, Argentina).
Name of feature: DORSUM GRABAU-DORSUM HIGAZY-DORSA STILE-DORSUM ZIRKEL.
Date and time (UT) of observation: 02-24-2014-06:14.
Size and type of telescope used: 250 mm. Schmidt-Cassegrain (Meade LX 200).
Filter (if used) : None.
Medium employed (for photos and electronic images) :Webcam Phillips SPC900NC
Name and location of observer: César Fornari (Oro Verde, Argentina).
Name of feature: DORSA IN MARE IMBRIUM.
Date and time (UT) of observation: 09-10-2016-23:12.
Size and type of telescope used: 279mm SCT (Celestron 11″ Edge HD)
Medium employed (for photos and electronic images): QHY5-II.
Name and location of observer: César Fornari (Oro Verde, Argentina).
Name of feature: DORSA SMIRNOV/DORSA LISTER/DORSA ALDOVRANDI.
Date and time (UT) of observation: 03-27-2016-06:27.
Size and type of telescope used: Celestron 11´ HD Hedge.
Medium employed (for photos and electronic images): Canon Eos Digital Rebel XS.
http://astroentrerios.com.ar/web/dorsa/
