02731nam a22004215i 4500001001800000003000900018005001700027007001500044008004100059020001800100020001900118024003500137040000900172082001200181100002700193245009100220264004600311300002100357336002600378337002600404338003900430347002400469490004600493505034100539520104800880650002301928650001701951650001501968650002101983650003402004650001502038650001702053710003402070773002002104776003602124830004602160856010302206978-0-387-74286-1DE-He21320260521091948.0cr nn 008mamaa100301s2008    xxu|    s    |||| 0|eng d  a9780387742861  a997803877428617 a10.1007/978-0-387-74286-12doi  cCICY04a5202231 aGrego, Peter.eauthor.10aVenus and Mercury, and How to Observe Themh[recurso electrónico] /cby Peter Grego. 1aNew York, NY :bSpringer New York,c2008.  bonline resource.  atextbtxt2rdacontent  acomputerbc2rdamedia  arecurso en líneabcr2rdacarrier  atext filebPDF2rda1 aAstronomers' Observing Guides,x1611-73600 a- A Perspective on Mercury and Venus -- - A Perspective on Mercury and Venus -- Current Knowledge of Mercury and Venus -- Our Current Knowledge of Mercury -- Our Current Knowledge of Venus -- Observing Mercury and Venus -- Equipment for Observing Mercury and Venus -- Recording Mercury and Venus -- Observing Mercury -- Observing Venus.  aMercury and Venus - known as the "inferior planets" because they are closer to the Sun than the Earth is - have always been regarded as difficult and even dangerous targets for amateur astronomers. Recent advances in commercially-made instruments have, however, brought them within range of only moderately experienced observers, and certainly Mercury and Venus are by no means inferior in terms of visual delights, observing challenges...and mystery. Venus and Mercury and How to Observe Them offers a wealth of detailed practical information on every aspect of observing, from safely targeting the two planets, through visual observing, to sketching and electronic imaging. This is of course much more than a book about observing. We now know a lot more of the origin and evolution of Mercury and Venus, and Peter Grego describes the most recent theories of their probable formation, geology, and history. Not only does this include a lot about the surface of the planets, but also their internal structure, magnetic fields, and atmospheres. 0aSCIENCE (GENERAL). 0aPLANETOLOGY. 0aASTRONOMY.14aPOPULAR SCIENCE.24aPOPULAR SCIENCE IN ASTRONOMY.24aASTRONOMY.24aPLANETOLOGY.2 aSpringerLink (Online service)0 tSpringer eBooks08iPrinted edition:z9780387742854 0aAstronomers' Observing Guides,x1611-736040uhttp://dx.doi.org/10.1007/978-0-387-74286-1zVer el texto completo en las instalaciones del CICY