Product no.: 66874Manufacturer: Shelyak
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This upgrade kit for the eShel spectrograph replaces the instrument’s collimator by a new doublet. This new optical component is optimized to increase the range of the spectral domain achievable, in particular in the blue part of the spectrum.
With this upgrade, the eShel spectroscop allows observations from 400nm !
The replacement of the collimator module is quite simple : only three screws to remove. Then you will have to adjust few parameters of data reduction in the AudeLA software.
This upgrade kit is only useful for eShel delivered before June 2018. All eShel delivered since this date include the new collimator.
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