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Shelyak 300 gr/ mm Grating Module for Lhires III Spectrograph

SKU : SL-SE0008

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Product Details

  • Shelyak 300 gr/ mm Grating Module for Lhires III

    This Shelyak 300 gr/ mm Grating Module works with all versions of the Lhires III Spectrograph and has an R ~ 1000 power of resolution. L Hires III allows for straightforward grating removal for switching between different grating modules. Shelyak Product Number: SE0008 Please Note: Stated pricing of this accessory requires concurrent purchase of one of Shelyak's larger systems. Please contact OPT if you are interested in stand-alone pricing.

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A
06/06/2021
Anonymous
United States United States

"Reducer" for Lhires III spectrometer

The grating that comes with the Lhires III spectrometer is quite strong. If I want to collect data for a dim object, the number of frames becomes so numerous (~20 frames @ 15nm per frame) that the time for each frame prohibits collecting the entire spectra in one setting. Therefore a weaker grating is required to enable one frame to capture the entire spectra. If something unusual is found in the single frame, I can return to the original grating and "zoom-in" to investigate.