Shelyak Lhires III Spectrograph

This high resolution spectrograph allows the observor to visually watch the solar spectra with a lot of fine details. This is an ideal instrument for clubs and associations who organize astronomy days for the public

Lhires III spectrograph has been designed for small telescope (typically 8" f/10 telescope) and is then perfectly adapted for backyard astronomy. It can be setup in numerous instruments and you can use several type of CCD camera, webcam, or SLR cameras to record your own spectra.

But Lhires III is also a perfect tool for studying the sky. Students from several universities are learning from this spectrograph. Its design is powerful but simple and one can easily open it to see inside. Assembling the spectrograph is also very educational. Easy to use, it allows practical astrophysic on small telescopes.

Lhires III can be used visually, which makes it a great educational tool during astronomy days and public observing sessions. Without a telescope, it enables the observor to watch, safely, solar spectra in very high resolution.

With a video camera or a webcam and a small instrument, Lhires III becomes a spectro-heliograph. One can then image the Sun in multiple wavelength (Ha, HeI, K...) using a scanning technique.

Lots of educational projects around the Doppler effect can be done such as::

Jupiter or Saturn rotation
Radial velocity of stars
Star rotation: v.sin(i)
Spectroscopic binaries

Easy to use
With the mirror slit, the Lhires III is very easy to use and allow to center and maintain the target into the slit with great precision. A simple webcam allow to guide on bright star. You get the full control of the operation during the exposure and you do not need a state of the art mount to do spectrography!

A multi usage instrument
Almost all CCD cameras, SLR cameras, or simple webcam can be mounted on a Lhires III.

Very convenient: optional grating and support are available to adapt in few seconds your resolution to your project. Fainter objects are accessibles: novae, bright comets... See our performance page

Technical Specs:

Performance Specifications
Lhires III is shipped with a 2400 lines/mm grating. Other gratings are available in option. They are shipped with their support and protective metal & plastic boxes. Those gratings modules allow to adapt your spectrograph resolution to your project.

The Lhires III comes with the following
Lhires III comes with a Schmidt Cassegrain Telescope adapter. We also have 2" adapter if you need.

The spectrograph also comes with a standard T thread that allow you to mount any SLR with a standard T-ring. It also comes with an eyepiece holder.

Short FAQ (Frequently Asked Questions)
Q: Do I have to select an optional grating when I order?

A: This is optional. The spectrograph provided is fully functional and includes a 2400 lines/mm grating with support. Optional gratings are made available to reach additional projects that require lower resolution.