Optec 0.5 inch Diameter Round Filters for SSP Photometers

Optec - Clear filter window for any SSP Photometer

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Model#: 17036

$35.00
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Optec - H-band filter, 1.65um CW, .30um BW for SSP-4 infrared photometer.

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Model#: 17138

$325.00
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Optec - Hb narrow and wide band filter set with R6358 or R6350 PMT

Set of two interference filters used to study the strength of Hß absorption at 4861Å. The narrow band filter has a halfwidth (FWHM) of 3 nm and the wide band filter has a halfwidth of 15 nm ... Learn More
Model#: 17049

$179.00
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Optec - J-band filter, 1.25um CW, .28um BW for SSP-4 infrared photometer.

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Model#: 17137

$325.00
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Optec - Johnson B (Blue) filter for SSP-3 or SSP-5 with R6358 or R6350 PMT

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Model#: 17032

$79.00
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Optec - Johnson I (Infrared) filter for SSP-3

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Model#: 17035

$79.00
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Optec - Johnson R (Red) filter for SSP-3 or SSP-5 with R6358 PMT.

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Model#: 17034

$79.00
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Optec - Johnson U (Ultra-Violet) filter for SSP-3 or SSP-5 with R6358 PMT

Optec - Johnson U (Ultra-Violet) filter ... Learn More
Model#: 17031

$79.00
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Optec - Johnson U (Ultra-violet) filter for SSP-5 with R6350 PMT.

Optec - Johnson U (Ultra-violet) filter ... Learn More
Model#: 17041

$79.00
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Optec - Johnson V (Visual) filter for SSP-3 or SSP-5 with R6358 PMT

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Model#: 17033

$79.00
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Optec - Johnson V (Visual) filter for SSP-5 with R6350 PMT.

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Model#: 17043

$79.00
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Optec - Sloan g' (acute); filter for SSP-3 or SSP-5 photometer.

Optec - Sloan g' (acute); filter for SSP-3 or SSP-5 photometer. ... Learn More
Model#: 17027

$125.00
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Optec - Sloan i´ filter for SSP-3 or SSP-5 photometer with R6358 PMT.

Optec - Sloan i´ filter ... Learn More
Model#: 17029

$125.00
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Optec - Sloan r' filter for SSP-3 or SSP-5 photometer.

Optec - Sloan r' filter ... Learn More
Model#: 17028

$125.00
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Optec - Stromgren b (blue) filter for SSP-5 with R6358 or R6350 PMT

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Model#: 17047

$99.00
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Optec - Stromgren u (ultra-violet) filter for SSP-5 with R6358 or R6350 PMT

Optec - Stromgren u (ultra-violet) filter ... Learn More
Model#: 17045

$99.00
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Optec - Stromgren v (violet) filter for SSP-5 with R6358 or R6350 PMT

Optec - Stromgren v (violet) filter ... Learn More
Model#: 17046

$99.00
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Optec - Stromgren y (yellow) filter for SSP-5 with R6358 or R6350 PMT

Optec - Stromgren y (yellow) filter ... Learn More
Model#: 17048

$99.00
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Optec offers a wide selection of filters for astronomical photometry in standard color systems. These filters are designed for the SSP series of single-channel stellar photometers and are 12.5mm (") in diameter and 7.00 mm thick. The filter sets offered are the Johnson U B V R I J H wide-band standard color set, Strmgren u v b y medium-band four-color set and the H wide & narrow band filter set.

To learn more about the Strmgren and H filters click here to download (1.8MB) and read a tutorial. Each of these filters can be factory mounted directly into the 2 and 6-position (automatic) filter sliders for the SSP photometers. See below for the transmission characteristics and instrument compatibility.

For routine photometry, consider a B - V set mounted in a two position slider. Consult texts on astronomical photometry for more information on the use of these special filters.

The Johnson filters that were available from Optec in 1-inch diameter size have been discontinued. Some may still be listed on the Scratch and Dent page. They have been replaced by a new Bessell design that are 5 mm thick and are similar in transmission to our 50 mm diameter Bessell set sold for the IFW.