Telescopes & Astronomy

The Sirius Optics 80° UWA 20mm eyepiece delivers an expansive, immersive field of view with fully multicoated high-index glass for maximum light transmission. With a generous 22mm of eye relief and no kidney bean effect or ghost images, this 2-inch eyepiece is ideal for deep-sky observation, letting you push your telescope to its magnitude limit in comfort.

• This 1.25” Eyepiece & Filter Kit includes 14 accessories that will add new life to your telescope and your observing!
• You’ll get five quality Plossl eyepieces, a 2X Barlow Lens, six colored filters to improve observations of the planets, a Moon filter, and a foam-fitted aluminum carry case with extra room to grow
• Five eyepieces and a Barlow lens equals 10 different magnifications to choose from, including the equivalent of a 3 mm, 4 mm, 6 mm, 6.5 mm, 8 mm, 8.5 mm, 13 mm, 16 mm, 17 mm and 32 mm.  And that doesn’t include eyepieces you may already have in your collection, which will now achieve double the magnification with the addition of the Barlow.
• A Moon filter will increase your enjoyment of lunar observations by dimming the brightness and increasing contrast
• The most popular planetary filters are included in this kit.  Have fun seeing what a blue filter will reveal about Jupiter, or unveil the polar ice caps on Mars with a red or orange filter.  

• X-Cel LX eyepieces, optimized for planetary viewing, offer a 60° field of view through a six-element fully multi-coated lens system
• Pop-up rubber eyeguards provide comfort and increase contrast.  Raise and lower with a simple twist.
• A treaded rubber grip offers a no-slip grip, even with gloves on
• 1.25” barrels are threaded to accept filters

• X-Cel LX eyepieces, optimized for planetary viewing, offer a 60° field of view through a six-element fully multi-coated lens system
• Pop-up rubber eyeguards provide comfort and increase contrast.  Raise and lower with a simple twist.
• A treaded rubber grip offers a no-slip grip, even with gloves on
• 1.25” barrels are threaded to accept filters

• X-Cel LX eyepieces, optimized for planetary viewing, offer a 60° field of view through a six-element fully multi-coated lens system
• Pop-up rubber eyeguards provide comfort and increase contrast.  Raise and lower with a simple twist.
• A treaded rubber grip offers a no-slip grip, even with gloves on
• 1.25” barrels are threaded to accept filters

The Sirius 5x Barlow with M42 Thread dramatically increases the magnification of your existing eyepieces, allowing you to reveal fine lunar details and planetary features like Jupiter's cloud bands with stunning clarity. Its standard M42 thread ensures easy compatibility with a wide range of telescopes and imaging setups, making it an essential addition to any astronomer's accessory kit.