See the summer's best skywatching events with these Celestron telescopes on sale for Prime Day

Celestron - AstroMaster 130EQ Newtonian Telescope (opens in new tab) | $280.89 $195.97 on Amazon

This powerful reflector telescope features a 130 millimeter aperture and a manual equatorial mount to track objects across the night sky. As with Celestron's other offerings, this telescope comes with two eyepieces, a StarPointer red dot finderscope and Starry Night astronomy software. With simple mechanics, this telescope is ideal for beginners looking to start skygazing without too much expense or complication. Get 30% off (opens in new tab) on the AstroMaster on Amazon today.

Celestron - PowerSeeker 127EQ Telescope (opens in new tab) | $189.00 $132.30 at Amazon

This entry-level Newtonian reflector telescope features a powerful 127 millimeter lens and a manual German equatorial mount. It comes with a 20 mm and a 4 mm eyepiece as well as a Barlow lens that can triple the magnification of both. Get 30% off (opens in new tab) for Prime Day.

Celestron - 70mm Travel Scope - Portable Refractor Telescope (opens in new tab)| $89.95 $62.99 on Amazon

Packaged in a convenient travel backpack, this 70mm scope is a good option for amateurs who want a light, inexpensive, but still high-quality telescope for beginning stargazing. With a manual mount and a weight of just 4.2 pounds (1.9 kg), this telescope is a great option for skygazing kids or users who don't want to mess around with a complicated setup. Right now, the travel scope is 30% off (opens in new tab) the listing price.

Celestron - 50mm Travel Scope (opens in new tab) | $64.95 $41.30 at Amazon

This lightweight telescope with a 50-millimeter lens comes with a backpack for easy transport. It's a good option for kids beginners, capable of producing views of Jupiter's moon and Saturn's rings, though not in strong detail. Today, the telescope is selling for 31% off (opens in new tab) the regular price.

Celestron 21024 FirstScope Telescope (opens in new tab) | $59.95 $38.47 at Amazon

Don't expect a ton of detail with this beginner tabletop telescope with a 76 millimeter lens, but do expect ease of use - simply point the lens at the sky and get star-gazing. The best views with this telescope will be of the moon, star clusters and other celestial objects that are generally visible to the naked eye. For Prime Day, the telescope is selling for 30% off (opens in new tab).

Celestron NexYZ 3-Axis Universal Smartphone Adapter (opens in new tab) | $65.95 $43.99 at Amazon

This universal adaptor will connect your smartphone to almost any eyepiece, including 1.25-inch and 2-inch telescope eyepieces, binoculars, spotting scopes and even microscopes. It's compatible with almost all smartphones, including Apple, Samsung and Google models. Right now, the adaptor is 34% off (opens in new tab) for Prime Day.