Temporarily out of stock; will charge and ship when available.
This 1.25” Oxygen III line filter has a very narrow 110 Ångstrom passband for two to three times the contrast of a narrowband filter for observing brighter nebulas like M17 and M27 from heavily light-polluted city locations . . .
Unlike an ordinary zoom eyepiece, this high power Nagler zoom maintains a constant and substantial 50 degree apparent field of view at all focal lengths and the usable eye relief stays a constant 10mm . . .
This 2-element Barlow has superb sharpness to match that of TeleVue eyepieces. Despite being “merely” an achromatic system, good design gives it better color correction at the edges of the field than some 3-element “apochromatic” Barlows.
It is fully multicoated, with blackened lens edges and internal antireflection threading for excellent contrast. Its barrel is threaded for standard 1.25" fil . . .
The Meade #506 Astrofinder software allows you to remotely control your #494 Autostar-equipped ETX-60AT, ETX-70AT, or ETX-80AT telescope from a laptop or PC . . .
This Astro-Tech 5mm Paradigm Dual ED eyepiece has excellent color fidelity and contrast, exceptionally low distortion, and a low price that will change your opinion about how much you really have to pay for optical excellence . . .
This high power 6.7mm Explore Scientific 82° field waterproof eyepiece will show you surprisingly wide deep space panoramas, even with short focal length/fast focal ratio refractors and Dobsonian scopes . . .
Temporarily out of stock; will charge and ship when available.
This medium power 14mm Explore Scientific 82° field waterproof eyepiece will show you surprisingly wide deep space panoramas with any type or focal ratio telescope . . .
The “picture window on space” viewing experience of this 82° field Explore Scientific 11mm 1.25” waterproof eyepiece gives you the magnification you want, without cramping your field of view like an ordinary high power eyepiece . . .
This 15' USB cable quadruples the length of the standard 5' LPI or DSI imager cable so you can put your laptop computer in a safer and more convenient location . . .
