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  • With this diagonal you can match the orientation of the star
    field with "correct" star maps and charts. It produces an image that is
    oriented properly, which means that the image is upright but reversed
    left to right.
  • This is a great diagonal for daytime terrestrial use and night
    time astronomy applications for telescopes or spotting scopes.
  • More comfortable viewing orientation as you observe from above,
    filter thread for any 1.25" filter. Accepts standard 1.25" eyepieces.
  • High quality optical Prism inside rather than a mirror which makes your image clear and sharp.
  • Economical 1.25" 90-deg prism diagonal for astronomical telescopes and spotting scopes.

Product description

1.25" 90-degree diagonal features an image erecting prism
that allows you to look into a telescope at a 90 degree angle. It
produces an image that is oriented properly, which means that the image
is upright and correct from left to right (i.e., a correct,
non-inverted, non-reversed image).This is a great diagonal for daytime
terrestrial use with small telescopes or spotting scopes. It can also be
used for astronomy applications, especially when you would like to
match the orientation of the star field with "correct" star maps and
charts. The prism housing is made of precision molded ABS plastic and
the two end barrels are precision machined from aluminum. The 1.25"
nosepiece is threaded to accept standard 1.25" astronomy filters. Please
Note: This diagonal can only be used with refractor telescopes and some
catadioptric telescopes like Schmidt-Cassegrain, Maksutov-Cassegrain,
etc. It not meant for use with Newtonian / Dobsonian reflector
telescopes or other variants of Newtonian telescopes.

Filed under: Eyepieces & Accessories