Astromania 1.25" 9mm 66-Degree Ultra Wide Angle Eyepiece - Bundle with - 1.25" Telescope Eyepiece Parfocal Rings, Set of Three

Product Information

ASINB0D6VJJKNK

CategoryFashion

About this item

This set of 3 Astromania Parfocal Rings lets you make a set of non-parfocal 1.25inch telescope eyepieces parfocal for more efficient observing; also useful for setting focus point of calibration eyepiece used for focusing an imaging or guide camera
Eliminate the need to make focus adjustments when changing telescope eyepieces; they are made of precision machined aluminium with black anodizing
With parfocal ring equipped telescope eyepieces you can change magnifications quickly and easily
Wide 66-deg apparent field offers expansive views of the moon; star clusters; and the Milky Way; generous 15mm eye relief allows comfortable viewing distance and lets eyeglass wearers see the entire field of view
6-element design deliver sharp image with good color correction and contrast; offers a wide field of view and superior performance; aluminum 1.25 inch eyepiece barrel is internally blackened to eliminate light scattering; thread to accept 1.25 inch filter

Product Description

These rings provide the ideal solution. They are made of precision machined aluminium with black anodizing. An Allen key & wrench to adjust position is included. They are also extremely useful when used with a flip mirror or beam splitter for photography. To use a par focal ring with a flip mirror you would first use the telescope's focuser to put your attached camera in perfect focus, now slide a ring over the eyepiece of your choice and raise and lower the eyepiece in the holder until it is perfectly in focus. Once you find the focus point that is perfectly matched to the camera slip the ring down and lock it in place using the included wrench. Now you can focus using the eyepiece . This is much easier than a dim focus screen. You just flip the mirror and take a picture! Leave the ring in place on the eyepiece and you can always quickly and easily pop it back in for photography.