ALPO Observations of Saturn During the 2004-2005 Apparition

Details ALPO Observations of Saturn During the 2004-2005 Apparition ALPO Observations of Saturn During the 2004-2005 Apparition

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007jalpo..50a..30b&link_type=abstract

Journal of the Association of Lunar & Planetary Observers, The Strolling Astronomer (ISSN 0039-2502), Vol. 50, No. 1, p. 30 - 54

Astronomy and Astrophysics

Astronomy

Saturn, Observations

Scientific paper

The ALPO Saturn Section received 400 visual observations and digital images submitted by 47 observers located in many countries during the 2004-2005 apparition (August 3, 2004 through July 3, 2005). Apertures employed to perform observations ranged from 10cm up to 50.8 cm. Saturn observers reported sporadic dusky festoons and short-lived dark spots in the South Equatorial Belt during rthe observing season, plus several small but persistent white spots or ovals in the South Equatorial Belt Zone and South Tropical Zone. In addition, at least one observersuspected an elongated whitish feature within the southern Equatorial Zone. Occasional recurring central meridian transit timings were contributed for some of these features. The inclination of Saturn's ring system toward Earth attained a maximum numeric value of 23.96° on March 25, 2005 and accordingly, observers could view and image substantial portions of Saturn's Southern Hemisphere and the South face of the rings throughout the observing season. A summary of visual observations and images of Saturn made during the apparition is discussed, including the results of continuing efforts to image the bicolored aspect and azimuthal brightness asymmetries of the rings. Accompanying the report are references, drawings, digital images, graphs, and tables.

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