ASTRONOMY TECHNOLOGY TODAY Your Complete Guide to Astronomical Equipment QHY12 • WILLIAM OPTICS GRAN TURISMO 102-MM APO REFRACTOR ADM DV-SERIES SADDLE • OLIVON WA PLÖSSL, ZOOM AND UW80° EYEPIECES

Source URL: www.baader-planetarium.de

I  The Changeable Picture in our Society   70 5

Source URL: www.wisskab.com

• Visual arts
• Joseph Petzval
• Voigtländer
• Simon Plössl
• Camera
• Heinrich Wawra von Fernsee
• Plössl
• Daguerreotype
• Simon von Stampfer
• Optical devices
• Photography
• Optics