INSIDE This Issue Specialty astronomy equipment dealers and manufacturers are an important resource for amateur and professional astronomers alike - patronize our advertising dealers in this issue and enjoy all the benefits of their expertise. Product Locator BINOCULARS FILTERS TELESCOPES Celestron (Page 5) Stellarvue® (Cover 3) Astro-Physics (Page 81) Celestron.com Stellarvue.com Astro-Physics.com 530-823-7796 815-282-1513 MOUNTS Celestron (Page 5) Atik-cameras.com Celestron (Page 5) Celestron.com +44(0)1603 740397 Celestron.com CAMERAS Atik Cameras (Page 3) Diffraction Limited (Cover 2) Diffractionlimited.com 613-225-2732 iOptron (Page 79) iOptron (Page 79) iOptron.com iOptron.com Sky-Watcher USA (Page 1) SkyWatcherUSA.com Sky-Watcher USA (Page 1) SkyWatcherUSA.com 310-803-5953 EYEPIECES 310-803-5953 Celestron (Page 5) Software Bisque (Cover 4, Page 69) Stellarvue® (Cover 3) Celestron.com Bisque.com Stellarvue.com 303-278-4478 530-823-7796 Stellarvue® (Cover 3) Stellarvue.com 530-823-7796 To advertise on this page, please contact Tim Allen at 773-551-0397, or Ads@skyandtelescope.org 82 APRIL 2 021 * SK Y & TELESCOPEhttp://www.celestron.com http://www.stellarvue.com http://www.astro-physics.com http://www.celestron.com http://www.atik-cameras.com http://www.celestron.com http://www.ioptron.com http://www.ioptron.com http://www.diffractionlimited.com http://www.skywatcherusa.com http://www.skywatcherusa.com http://www.stellarvue.com http://www.bisque.com http://www.celestron.com http://www.stellarvue.com