LhiresIII 600 Ln/mm Grating
Posted: Mon Feb 11, 2019 5:43 pm
I just acquired the 600 grating for the LhiresIII and was surprised to find the H-Alpha line
was around 800 on the micrometer; full length of mircometer travel 0-2200.
Does this seem right? On my 2400/1800 gratings, the H-Alpha is closer to 1900. The physical
grating does look much smaller that the 2400/188 l/mm gratings for the LhiresIII.
was around 800 on the micrometer; full length of mircometer travel 0-2200.
Does this seem right? On my 2400/1800 gratings, the H-Alpha is closer to 1900. The physical
grating does look much smaller that the 2400/188 l/mm gratings for the LhiresIII.