Diagonals and Prisms
William Optics 2 Inch 45 Degree Erecting Prism
$198.00Last catalog price, March 2008
Catalog description
William Optics 2 Inch 45 Degree Erecting Prism, part number WIOP021, is a discontinued product from the 2007–2011 catalog. It was last listed at $198.00, down from a high of $200.00.
Another beautiful product exclusively from William Optics. This 2 45 deg. erecting prism will scream to be used with that nice premium refractor of yours! Perfect for daytime observations too. Image erecting BAK4 prism with anti-reflection coating. High accuracy and high light reflection prism.
Brass compression ring. Internally matte blackened and threaded for no internal stray light reflection.
Threaded for 2 filters1.25 adapter with brass compression ring included. Large chromed thumbscrews.
Entirely aluminum black anodized.
Smooth finish. Prism clear aperture 31 mm Weight 400 g
Catalog price history
| Observed | Listed price | Change |
|---|---|---|
| September 2007 | $198.00 | |
| February 2008 | $200.00 | +$2.00 |
| March 2008 | $198.00 | −$2.00 |
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