Hi all,
I just noticed that Edmund Optics now carries a 1 inch diameter 600 lp/mm 600nm volume phase holographic grating for $295 US.
"Gratings feature extremely low scatter loss, low polarization dependency, and a durable design." And they are antireflection coated both sides and feature >85% peak efficiency!
These are perfectly suited to amateur astronomical spectroscopes.
Tim
VPH gratings
Design, construction, tuning of spectroscopes
Information and discussion about softwares (telescope remote, autoguiding, acquisition, spectral processing ...)
Information and discussion about softwares (telescope remote, autoguiding, acquisition, spectral processing ...)
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