Whitney's Star Finder: A Field Guide to the HeavensKnopf, 1974 - 97 pagine |
Dall'interno del libro
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Pagina 15
... visible planets with the exception of Venus . The outer planets move much more slowly than the inner planets . ( Their years are longer , and they move fewer miles per hour . ) There is a regular pro- gression , explained by Isaac ...
... visible planets with the exception of Venus . The outer planets move much more slowly than the inner planets . ( Their years are longer , and they move fewer miles per hour . ) There is a regular pro- gression , explained by Isaac ...
Pagina 64
... VISIBLE WITH BINOCULARS SEPARATION MAGNITUDES ( ARC DESIGNATION COORDINATES COMBINED BRIGHTER FAINTER SECONDS ) NAME a Librae 14h48m -15 ° 50 ' 2.79 2.90 5.33 231 Zubenelgenubi € Lyrae 18 43 +39 37 3.83 4.50 4.68 208 a Leonis 10 05 +12 ...
... VISIBLE WITH BINOCULARS SEPARATION MAGNITUDES ( ARC DESIGNATION COORDINATES COMBINED BRIGHTER FAINTER SECONDS ) NAME a Librae 14h48m -15 ° 50 ' 2.79 2.90 5.33 231 Zubenelgenubi € Lyrae 18 43 +39 37 3.83 4.50 4.68 208 a Leonis 10 05 +12 ...
Pagina 68
... visible to the naked eye . Figure 10 shows the brighter members of this cluster , and the magnitudes of stars visible with binoculars are indicated . This is a very nearby example of an " open , " or loose , cluster . Another example is ...
... visible to the naked eye . Figure 10 shows the brighter members of this cluster , and the magnitudes of stars visible with binoculars are indicated . This is a very nearby example of an " open , " or loose , cluster . Another example is ...
Sommario
OBSERVING THE PLANETS WITH BINOCULARS | 13 |
Mercury in the fall and spring sky at twilight | 17 |
Venus moving in its orbit around the sun | 18 |
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Whitney's Star Finder: A Field Guide to the Heavens Charles Allen Whitney Visualizzazione estratti - 1977 |
Parole e frasi comuni
Andromeda galaxy appear astronomers Big Dipper binoculars Boötes brighter camera Capricornus Celestial Equator clouds clusters colors Comet constellations crescent daily rotation distance Double Stars Earth Earth's axis Earth's orbit east elongations Figure Filter Time seconds focal length full moon galaxy Gemini greatest eastward hour hand indicated inferior conjunction interval July June Jupiter latitude Lens Opening light lunar eclipse magnitude Mars minutes minutes of arc month moon's orbit morning sky morning twilight motion naked eye ND Filter nebula night noon North Star opposite the sun Orbit of Mercury Orion pair of binoculars photographed Pisces Saturn Scorpius seen Sept small telescope solar eclipses solar system spring equinox star clock star disk star finder stick sun moves sun's path sundial sunlight sunset and sunrise Table total eclipse umbral shadow vanishes VARIABLE STARS Venus watch western horizon westward winter zodiac zone