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Zeiss 100 mm Huygens Eyepiece

Started by apmtelescopes, 11/05/2002 10:20AM
Posted 11/05/2002 10:20AM Opening Post
Luckily I came across with a very rar big Zeiss refractor eyepiece,. a Huygens F= 100 with a fieldstop of 135 mm clear aperture.

Just for interest here the picture


Attached Image:

apmtelescopes's attachment for post 2159

clear skies

Markus Ludes
Posted 11/05/2002 11:30AM #1
I guess this was for a very long focus refractor.

How heavy is it????

Kevin B
Posted 11/05/2002 04:53PM #2
Hi Markus,

Interesting and somewhat puzzling. On a telescope of 2327mm focal length, this eyepiece would yield a field a bit over 3.3 degrees across at 23x. This implies an apparent field of about 76 degrees - awfully wide for a Huygens.

Was this eyepiece for some specialized purpose?

Clear skies, Alan