[Ovidiu M.]

Un articol foarte bun care ofera informatiile necesare, precum si indrumare catre resursele necesare in vederea observarii stelelor duble.
http://www.handprint.com/ASTRO/bineye2.html

[C.Ovidiu]

Il stiu, mai postez si eu alte siteuri despre stele duble.
http://stelledoppie.goaction.it/index2.php?section=1

Cateva exemple de stele duble fizice usoare

http://stelledoppie.goaction.it/index2.php?iddoppia=61029 - Xi Bootes
http://stelledoppie.goaction.it/index2.php?iddoppia=34290 - Castor
http://stelledoppie.goaction.it/index2.php?iddoppia=54650 - Porrima
http://stelledoppie.goaction.it/index2.php?iddoppia=72911 - 70 Oph

Site 2
http://www.perezmedia.net/beltofvenus/arch..._star.html

Site 3
https://bestdoubles.wordpress.com/

Site 4
http://www.geocities.jp/toshimi_taki/binar..._orbit.htm
Site 5
http://www.epsilon-lyrae.de/Doppelsterne/Doppelsterne.html

Sa traiasca dublele

[nobody]

@OvidiuDanut: Vezi ca ai acolo mai multe pagini despre duble (si nu numai, cele de optica sunt foarte bune). http://www.handprint.com/ASTRO/

Double Star Astronomy
• A Double Star Primer - Terminology, the probability of pair asterisms, common visual patterns, dynamic segregation, double star characteristics (multiplicity fraction, orbital radius & period, eccentricity, mass ratio), calculating system distance & separation, the horizon of visual double stars, double stars and star formation.
• Training the Binary Eye - A tutorial to develop the eight visual skills necessary for double star astronomy.
• Double Star Datasets - An introduction to double star catalogs, books and software, double star measurements; avoiding the "binary bias".
• Orbital & Dynamical Elements - The dynamic fundamentals of a binary system, and a Photoshop method to diagram relative and absolute orbits.
• Double Star Color - An investigation of double star visual color and how to observe and report it.
• Double Star Distance & Separation - A compact lookup table for distance and maximum arcsecond separation by apparent magnitude, orbital radius and dwarf spectral type.
• A Gallery of Multiple Stars - Positional plots of over 530 multiple star systems.
⌘ Double Star Astronomy - A PowerPoint presentation (18.7 Mb) on binary stars, star formation, and double star astronomy.
⌘ A Visual Double Star Campaign - PowerPoint presentation (4.3 Mb) given at the 2013 Maui International Double Star Conference.

[theogon]

Nu mai trebuia să deschizi un topic cu stelele duble când deja sunt trei pe forum, două promovate de Mircea Pteancu şi una de Auriga (Lucian Hudin)
Sissy Haas Binary Star Project www.astronomy.ro/forum/viewtopic.php?p=102988i#102988
Stele duble de vară şi de seară www.astronomy.ro/forum/viewtopic.php?p=57742#57742
Lista lui Lockier www.astronomy.ro/forum/viewtopic.php?p=136302#136302

[Ovidiu M.]

Scuze, nu le am văzut. Ca link util m am gândit sa l postez la aceasta secțiune.