Here’s a Regulus spectrum taken with an ASI 183 MM pro and a 600 gr/mm grating in the near IR part of the spectrum to show the Paschen lines.
For the wavelength calibration, I used the same polynomial calibration as I used in the UV part.
The UVEX is very stable at all wavelength range for a given grating.
UVEX by Shelyak in near IR
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UVEX by Shelyak in near IR
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html