Bino- optimized 30mm Widescan Typ 2 Eyepieces
Pictures appear to be larger observing with both eyes than they do with one eye closed. With most binocular attachments it is only possible to use 1 1/4 inch eyepieces, this causes a reduction of the maximum true field visible.
A telescope like my bino can use 2 inch eyepieces and their entire field of view.
Therefore I adapted a pair of 2inch mirror star diagonals to my bino. Minimun interpupilary distance achieveable is 62mm.
The edges of the covers had to be taken away, and also a small piece of the mirrors backside.
The 30mm Widescan Typ 2 is declared to have more than 80° apparent field of view. In fact it is not possible to view the entire Field without moving the eye.
There is one disadvantage for binocular use:
The housing is cylindrical nearly up to its end, and if arranged two by two, it leaves very little space for most noses (asians do have a real advantage).
On the left the original, on the right the new, optimized housing
After dismounting of one eyepiece it became clear that a lot of space could be saved.
So I took the exact dimensions and made a new housing on my lathe:
Using those two modified widescans for observing is a pleasure, the plejades for example fit into the field completly. The "space-walk effect" is enormous because one looks into space without limitation of the apparent field of view. The sharpness close to the edge is not Nagler-like, but that doesn´t bother me at all.
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The edges of the covers had to be taken away, and also a small piece of the mirrors backside.
The 30mm Widescan Typ 2 is declared to have more than 80° apparent field of view. In fact it is not possible to view the entire Field without moving the eye.
On the left the original, on the right the new, optimized housing
After dismounting of one eyepiece it became clear that a lot of space could be saved.
So I took the exact dimensions and made a new housing on my lathe:
Using those two modified widescans for observing is a pleasure, the plejades for example fit into the field completly. The "space-walk effect" is enormous because one looks into space without limitation of the apparent field of view. The sharpness close to the edge is not Nagler-like, but that doesn´t bother me at all.
Home