(in visual photometry)
51Globular cluster — s from the Sun and contains hundreds of thousands of stars. [cite news coauthors =The Hubble Heritage team url = http://hubblesite.org/newscenter/newsdesk/archive/releases/1999/26/ title = Hubble Images a Swarm of Ancient Stars work = HubbleSite… …
52Vega — Starbox begin name=Vega Starbox image caption = Location of Vega in the constellation Lyra. Starbox observe epoch=J2000.0 constell=Lyra ra=RA|18|36|56.3364cite web author=Staff date=October 30, 2007 url=http://simbad.u strasbg.fr/simbad/sim… …
53Albireo — Starbox 2 name=SIMBAD link|HD+183912|Albireo A caption=Albireo s position, lower right corner. The cross like figure is the Northern Cross. The blue line shows the boundaries of the constellation the Swan. epoch=J2000.0 (ICRS) constell=Cygnus ra… …
54Naked eye — For other uses, see Naked eye (disambiguation). Bare eye redirects here. For the bird genus, see Bare eye. The naked eye The naked eye is a figure of speech referring to human visual perception unaided by a magnifying or light collecting optical… …
55Queen's Medal — Die Royal Medal, auch The Queen s Medal genannt, ist eine von der Royal Society verliehene Auszeichnung für Wissenschaftler, die innerhalb des Commonwealth of Nations besonders wichtige Beiträge zur Weiterentwicklung der Wissenschaften geleistet… …
56Royal Medal — Die Royal Medal, auch The Queen s Medal genannt, ist eine von der Royal Society verliehene Auszeichnung für Wissenschaftler, die innerhalb des Commonwealth of Nations besonders wichtige Beiträge zur Weiterentwicklung der Wissenschaften geleistet… …
57Aperture — For other uses, see Aperture (disambiguation). f stops demonstrated on a lens …
58Photographic film — This article is mainly concerned with still photography film. For motion picture film, please see film stock. Photographic film is a sheet of plastic (polyester, nitrocellulose or cellulose acetate) coated with an emulsion containing light… …
59Cosmic distance ladder — * Light green boxes: Technique applicable to star forming galaxies. * Light blue boxes: Technique applicable to Population II galaxies. * Light Purple boxes: Geometric distance technique. * Light Red box: The planetary nebula luminosity function… …
60Arne Henden — is an American observational astronomer and instrument/software specialist. He currently serves as Director of the American Association of Variable Star Observers. Birth and Family Henden was born in Huron, South Dakota, but as the son of an… …
