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The Maryland-Magellan Tunable Filter
MMTF Emission-Line Transmission Calculator (TCALC)

Transmission curves of MMTF blocking filters.

 Rest Wavelength [nm] :

This JavaScript calculator provides the MMTF filter transmission at a given wavelength, using the set of blocking filters shown in the figure to the right. Observers should ensure that all of their planned observations have at least 25% transmission at the redshifted wavelength.

If you are considering the purchase of a narrow-band filter not listed here and are interested in making it available for use with MMTF, or have other questions about filters, please contact Sylvain Veilleux. Filter bandpasses must fall in the high-reflectivity part of the interior plate coating transmission curve; this range is roughly 5000-9500 Å (see Figure).