Philips Atlas of the Universe

The Beginner’s Guide to the Sky Cameras can be introduced at an early stage. Any camera capable of giving a time-exposure will d ...

THE PRACTICAL ASTRONOMER becomes smaller and the binoculars become heavier. Beyond a magnification of about
12, some sort of a ...

ATLAS OF THE UNIVERSEATLAS OF THE UNIVERSE Choosing a Telescope A stronomical telescopes are of two basic types. First there is ...

THE PRACTICAL ASTRONOMER ▲ Seen with naked eye, the Full Moon will be covered by the thickness of a pencil held at arm’s length. ...

Home Observatories ATLAS OF THE UNIVERSE S mall telescopes are portable; larger ones are not. It may well be that the serious am ...

THE PRACTICAL ASTRONOMER One form of dome is what can be called the wedding- cake pattern. The walls can be permanent, so that t ...

ATLAS OF THE UNIVERSE A Aberration of starlight:The apparent displacement of a star from its true position in the sky due to the ...

GLOSSARY C Caldwell catalogue: A list of 109 bright nebular objects, none of which are included in the Messier catalogue. Carbon ...

ATLAS OF THE UNIVERSE D Day:In everyday language, a day is the amount of time it takes for the Earth to spin once on its axis. A ...

F Faculae: Bright temporary patches on the surface of the Sun, usually (although not always) associated with sunspots. Faculae f ...

Hour angle: The time which has elapsed since a celestial body crossed the meridian of the observer. Hour circle: A great circle ...

objects including open and globular clusters, gaseous nebulae and galaxies. Messier’s catalogue contained slightly over a hundre ...

Penumbra: (1) The comparatively light surrounding parts of a sunspot. (2) The area of partial shadow lying to either side of the ...

Reflector: A telescope in which the light is collected by means of a mirror. Refraction: The change in direction of a ray of lig ...

Spacesuit: Equipment designed to allow an astronaut to operate outside the atmosphere. Specific gravity: The density of any subs ...

Sun at inferior conjunction. Transits of Mercury are quite frequent (e.g. one in 1973 and the next in 1986), but the next transi ...

A Aberration of light 220 Absolute magnitude 170 Acamar (star) 260 Achernar (star) 260 Acrux (star) 169 Adams, J. C. 130 Adhara ...

Jupiter 114 Mars 63, 84 Neptune 130 photography 79, 98, 113 reconstruction of images 109 Saturn 114 stellar spectra 173, 177, 21 ...

Flaming Star Nebula 252, 253 Flammarion, Camille 227 Flamsteed, John 122 Flaugergues, Honoré 142 Fomalhaut (star) 208, 215, 245 ...

Lowell, Percival 76, 77, 134 Lucian of Samosata 22 Ludwig V, Emperor 218 Ludwig’s Star 218 Lunar Roving Vehicle (LRV) 50 Lunik ( ...