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Shelyak Instruments - LHIRES III - Littrow High Resolution Spectrograph (Assembled and Tuned)

Model#: ES0002

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$4,725.00

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Shelyak Instruments - LHIRES III - Littrow High Resolution Spectrograph (Assembled and Tuned)

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A quality high resolution spectrograph Review by kagm10@gmail.com
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I purchased my LHires III 4 years ago and have been using it on a 12” Meade sct. As a high resolution spectrograph, the LHires III has performed very well. The new comer to spectroscopy will need to move through the learning curve in order to obtain high quality spectra, but once the basics are learned, the rewards are well worth the effort. The Lhires III has a spectral range of about 200 Angstroms and is quite capable of producing high quality spectra that show detailed emission lines.

The Lhires III is a versatile spectrograph. There are available gratings of differing resolutions that can be easily changed out. A micrometer is used to adjust the spectrograph to the desired wavelength range for a given project.

If there was one inconvenience with the LHires III, I would say that it is due to some minor flexure in the unit as it is moved from one target to another. This flexure, and/or possibly temperature changes, can cause a slight shift in the neon lines. For this reason, it is wise to take a neon calibration frame both before and after the series of images for a given target. But this takes only a matter of seconds to accomplish.

The LHires III very capable of producing high quality high resolution spectra that is acceptable for scientific research. I have given it a 4 star rating for value as it does appear to be a bit pricey. The 4 stars for quality are due to the flexure mentioned above.

(Posted on 2/7/2015)

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