Advertisers in This Issue Astronomy equipment manufacturers and dealers are a valuable resource for amateur and professional astronomers alike. Patronize our advertisers in this issue and enjoy all the benefits of their expertise. Product Locator Archeological Paths »back cover archeology lecture tour zahilectures.com Astro-Physics »page 81 mounts / telescopes astro-physics.com Diffraction Limited »page 67 cameras diffractionlimited.com Insight Cruises »page 3 group cruise travel specialist insightcruises.com QHYCCD »page 1 cameras qhyccd.com Sky-Watcher »inside front cover binoculars / mounts / telescopes skywatcherusa.com Snow King Observatory and Planetarium »page 75 observatory at a ski resort skobservatory.com Stellarvue »inside back cover eyepieces / telescopes stellarvue.com Ad Index ALPO ....................................................... 81 Archeological Paths ................................. C4 AstroCon .................................................. 81 Astro-Physics .......................................... 81 Bob's Knobs ............................................. 80 Casitas de Gila Guesthouses .................... 80 Chiricahua Sky Village .............................. 80 DarkSky International .............................. 81 Diffraction Limited ................................... 67 Insight Cruises ........................................... 3 Knightware .............................................. 81 Lunatico Astronomia ................................ 80 NEAF ....................................................... 67 Nine Planets Ring .................................... 81 Precise Parts ........................................... 80 QHYCCD .................................................... 1 Sky & Telescope ...................3, 5, 67, 75, 83 Sky-Watcher ............................................ C2 Snow King Observatory ........................... 75 Stellarvue ................................................ C3 TVLACQ ................................................... 80 William Optics .......................................... 80 Willmann-Bell Books ................................ 81 To advertise in our Product Locator, please email Rod Nenner at: ads@skyandtelescope.org 82 APRIL 2025 * SKY & TELESCOPEhttp://www.zahilectures.com http://www.qhyccd.com http://www.astro-physics.com http://www.skywatcherusa.com http://www.diffractionlimited.com http://www.skobservatory.com http://www.insightcruises.com http://www.stellarvue.com