Telescopes & Astronomy

The Sirius 2 inch to 1.25 inch Locking Adapter lets you securely use your 1.25" eyepieces and accessories in any 2" focuser, thanks to its reliable twist-lock mechanism that prevents slipping and ensures a firm hold. It's an essential addition for any astronomer looking to expand their eyepiece compatibility without sacrificing stability.

The Sirius 2" Parfocal Ring eliminates the need to refocus your telescope every time you swap eyepieces. Simply lock the ring onto each eyepiece barrel at its precise focus point, and enjoy seamless, shake-free transitions between magnifications during your observing sessions. It's also ideal for astrophotography, allowing you to match your calibrating eyepiece's focus to your camera for fast, accurate results.

The Sirius 1.25 Inch Parfocal Ring eliminates the need to refocus your telescope every time you swap eyepieces. Simply lock the ring onto each eyepiece barrel at its precise focus point, and enjoy seamless transitions between magnifications during visual observing or astrophotography sessions. It's a simple, affordable upgrade that saves valuable time at the eyepiece.

This Sirius Optics 2-inch SCT eyepiece holder features a female SCT thread and a non-marking brass compression ring, allowing you to securely attach 2-inch diagonals, eyepieces, and T-adapters to your Schmidt-Cassegrain telescope. A must-have visual back for upgrading to wider-field 2-inch accessories.

• The Celestron Universal Barlow & T-Adapter is three accessories in one!
• 2X Barlow:  Use during visual observing to double the magnification of every 1.25” eyepiece you own
• Prime Focus Photography: Use the T-Adapter portion of this accessory to transform your telescope into a giant telephoto lens
• Tele-Extended Photography:  Use the T-Adapter with Barlow to get double the magnification of prime focus mode 
• T-threads accept camera brand specific T-Ring (sold separately)