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LHIRES III Spectrograph, Shelyak Instruments
Kimberly Smith
Instructions on proper use and installation of attachments to the spectrograph and to the 16’
Meade Telescope at Rice Creek
A
B
D
C
In the figure above, you see the spectrograph and all the necessary pieces required to
install the spectrograph into the telescope. When the instrument is first removed at each
opening there is a bright red or orange covering which is to protect the instrument from
collecting dust on its mirrors. Before starting these must be removed.
Letter A is the telescope entrance and that is where the spectrograph will connect to the
telescope. The T Adaptor, shown above the entrance opening for the instrument, is required to
connect to the Meade. The fine hairs on the adaptor screw into the ring on the spectrograph,
and then the smooth part of the adaptor clicks into place on the telescopes image plane and
the two screws on the telescope will hold the adaptor in place, and will take the place of an
eyepiece and star diagonal.
Letter B is the guiding hole, used to ensure that the star or point of light is fixed on the
slit of the spectrograph. After removing the protective cover, a regular eyepiece can be used to
guide the objects.
Letter C is the spectrum imaging hole used to observe the spectrum. After removing the
red protective covering, the 26 mm adapters hairs must be screwed tightly into the hairs
located inside the imaging hole. An eyepiece of any size can then be inserted, secured with the
white knobs, and then observation can begin. NOTE: If a video recorder, or a CCD want to be
connected, the 26 mm adapter must be removed and an alternate adapter be put in its place.
These adapters can be found with the instruments.
Letter D is the Micrometer setting. To start the setting must read 0.00 mm in order to
observe an open slit and ensure light is evenly entering the spectrograph. When installing the
spectrograph, the spectrum imaging hole should face you while the Micrometer setting be
parallel to the barrel of the telescope.
With all pieces connected, the spectrograph should be attached and secured to the Rice
Creek Meade telescope as shown above.