• TELEVUE

Televue's Ethos 13mm has an incredible apparent field of view of 100 degrees allowing you to frame large objects at high magnification to give what Televue call an exceptional "Majesty Factor". Read the reviews on the Televue site then return here to order this superb eyepiece.

Majesty Factor Visualization: in the image below the eyepiece the 13-mm Ethos (left) and 26-mm Plössl (right) have the same true field of the Double Cluster. But Ethos has twice the power factor and four times the contrast factor. Ethos therefore has a Majesty Factor of eight relative to the Plössl's Majesty Factor of one. For reference, the 0.9° true field shown could be produced by a 14" f/4 telescope using the 100° Ethos at 109x with a 3.2mm exit pupil or the 26-mm 50° Plössl at 55x with a 6.5mm exit pupil.

Suitable for 1.25" and 2" focusers