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 Airy-Disk »page 77 telescopes / lenses / mirrors airy-disk.com Astro-Physics »page 81 mounts / telescopes astro-physics.com Celestron »back cover accessories / binoculars / mounts / telescopes celestron.com Firefly Books »page 3 publisher fireflybooks.com Insight Cruises »page 1 group cruise travel specialist insightcruises.com QHYCCD »page 5 cameras qhyccd.com Sky-Watcher »inside front cover binoculars / mounts / telescopes skywatcherusa.com Stellarvue »inside back cover eyepieces / telescopes stellarvue.com Texas Star Party »pages 80 and 83 annual star party near Fort Davis, Texas texasstarparty.org Ad Index Airy-Disk ................................................. 77 ALPO ....................................................... 81 American Astronomical Society ................ 11 Astro-Physics .......................................... 81 Bob's Knobs ............................................. 80 Casitas de Gila Guesthouses .................... 80 Celestron ................................................. C4 DarkSky International .............................. 81 Firefly Books .............................................. 3 Home/Ranch For Sale, SW Colorado ......... 80 Insight Cruises ........................................... 1 Knightware .............................................. 81 Lunatico Astronomia ................................ 80 Nine Planets Ring .................................... 81 Precise Parts ........................................... 80 QHYCCD .................................................... 5 ScopeTrader ............................................ 80 Sky & Telescope ...........................61, 77, 83 Sky-Watcher ............................................ C2 Stellarvue ................................................ C3 Texas Star Party ................................. 80, 83 William Optics .......................................... 80 Willmann-Bell Books ................................ 81 To advertise in our Product Locator, please email Rod Nenner at: ads@skyandtelescope.org 82 DECEMBER 2024 * SKY & TELESCOPEhttp://www.airy-disk.com http://www.qhyccd.com http://www.astro-physics.com http://www.skywatcherusa.com http://www.celestron.com http://www.stellarvue.com http://www.fireflybooks.com http://www.texasstarparty.org http://www.insightcruises.com