Detrás de unos libros y enlaces…
De aquí: http://www.munisingwebsites.com/lookum/books.html
Field Book of The Skies.
William Tyler Olcott & Edmund W. Putnam – G.P. Putnam’s & Sons – 1929 – 534 pp.
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An observer’s guide by constellation, broken up into the four seasons with finder charts. Observations of many deep-sky objects, but mostly double stars; all visible in a small telescope. It’s a facinating reference with quotes from just about every person involved in early 20th century astronomy. A great historical reference and my favorite.
De aquí: http://cloudynights.com/item.php?arch=1&cy=2009&cm=2&cmn=February&item_id=1944
In Starland with a 3″ Telescope (review @CN)
De aquí el pdf del libre (gratuito): http://www.archive.org/details/instarlandwithth00olcorich
De aquí: http://www.webbdeepsky.com/notes/doublest01.html
Also available is `A Visual Atlas of Double Stars’. 124 pages of interesting charts and data by Mike Ropolewski. Price £9.00 or $16.00.
And now also available Volume 2 of Mike Ropolewski’s Double Star Atlas – mostly covering the southern sky. Price £6.00 or $11.00.
These publications are available from Don Miles in the UK at the following address (in pounds sterling payable to `The Webb Society’)
De aquí: http://contentdm.lindahall.org/cdm4/document.php?CISOROOT=/star_atlas&CISOPTR=1064&REC=3&CISOSHOW=1007
Una maravilla para recrearse la vista con lso dibujos y sacar posibles fichas preliminares…
Editaré la entrada posteriormente, para hacerla más “leíble” 
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, a la que hay que dedicarle algo de tiempo. Desde aquí mi enhorabuena a Patricio T. 
