- A quality high resolution spectrograph Review by firstname.lastname@example.org
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)