Lurie-Houghton Telescope
Secondary Holder Assembly (Front)
Here's the front view of secondary holder assembly. The secondary
mirror of the
telescope will be glued to the 45 degree angle
cut on the black plastic part. This mirror is used to direct the focused
light from the primary mirror sideways through a hole in the telescope tube
allowing me to view the image. The three socket head screws on the front are
used to adjust the angle of the mirror. One of two set screws in the side of the
assembly is also visible. They are used so I could slide and rotate the mirror
along and around the optical axis. All of these adjustments are needed so the
reflected light is perpendicular to the main optical axis of the telescope and
centered properly in the telescope eyepiece. The metal parts were made by my
friend Cullen Bennett in his home based machine shop. The plastic mirror holder
is manufactured by
ProtoStar. This photo was taken 20 December 1999 with an Olympus D-600L
digital camera.
Lurie-Houghton Telescope Home Page
Rick Scott's Natural Images Home Page
Updated: 9 October 2000
