Leander McCormick Observatory
26-inch Instrumention: Filters
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The Leander McCormick Observatory has a collection of 2-inch
filters for educational uses. We have a set of standard
UBVRI broad band photometry filters. However, with the
chromatic aberation present in the the 26-inch
refractor only the B, V and R filters find limited use. The
default filter used is the V filter, primarily for
single-band photometry of variables.
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Filter
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Size
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QE(%)
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Johnson U
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2-inch
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Johnson B
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2-inch
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Johnson V
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2-inch
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Cousins R
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2-inch
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Cousins I
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2-inch
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