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 Astro-Physics, Inc. » page 81 mounts / telescopes astro-physics.com Celestron » page 3 accessories / binoculars / mounts / telescopes celestron.com iOptron » page 71 mounts / telescopes ioptron.com QHYCCD Light Speed Vision » page 5 cameras qhyccd.com Sky-Watcher » inside front cover binoculars / mounts / telescopes skywatcherusa.com Software Bisque » page 1, 40 + back cover mounts bisque.com Stellarvue » inside back cover eyepieces / telescopes stellarvue.com Ad Index American Astronomical Society ................ 71 Arizona Sky Village Portal ......................... 81 Astro-Physics, Inc. ................................... 81 Bob's Knobs ............................................. 80 Casitas de Gila Guesthouses .................... 81 Celestron ................................................... 3 Insight Cruises ......................................... 83 iOptron .................................................... 71 Knightware .............................................. 80 Lunatico Astronomia ................................ 80 New Mexico Skies Astronomy Enclave ..... 81 NexDome ................................................. 81 Nine Planets Ring .................................... 81 Precise Parts ........................................... 80 Princeton University Press........................ 80 QHYCCD Light Speed Vision ....................... 5 Revolution Imager .................................... 81 Sky & Telescope ................................ 73, 79 Sky-Watcher ............................................ C2 Software Bisque ............................ 1, 40, C4 Star-Hop Maker ....................................... 80 Stellarvue ................................................ C3 Technical Innovations ......................... 80, 81 TravelQuest.............................................. 81 To advertise in our Product Locator, please contact Tim Allen at 773-551-0397, or email him at Ads@skyandtelescope.org 82 FEBRUARY 2022 * SKY & TELESCOPEhttp://www.astro-physics.com http://www.skywatcherusa.com http://www.celestron.com http://www.bisque.com http://www.ioptron.com http://www.stellarvue.com http://www.qhyccd.com