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Optolong UBVRI photometric Filter Set 1.25"

Name: Optolong UBVRI photometric Filter Set 1.25"
Brand: Optolong
SKU: OPL-UBVRI1
Price: 599 EUR

This filter set represents the Johnson-Cousins UBVRI photometric system, an extended version of the Johnson UBV system.

high transmission at pass-band (a bit lower for U)

quality glass substrate, quality finish (fine-optically polished), quality coating

comes with protective box for each filter

Manufacturer: Optolong

Product number: OPL-UBVRI1

EUR 599,00RRP EUR 769,00you save 22.1% (EUR 170,00)

incl. 19 % VAT (DE)

The VAT indicated refers to that applicable in Germany. After logging in, the VAT amount is adjusted to the applicable VAT of the stored delivery country. Therefore, the final price may vary accordingly.

excl. 6.95 € shipping costs (DE)

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Optolong UBVRI photometric Filter Set 1.25"

This filter set represents the Johnson-Cousins UBVRI photometric system, an extended version of the Johnson UBV system.

high transmission at pass-band (a bit lower for U)

quality glass substrate, quality finish (fine-optically polished), quality coating

comes with protective box for each filter

Details..
Technical data..
In the box..

Optolong UBVRI photometric Filter Set - 1.25" mounted

This photometric UBVRI filter set includes five 1.25" round mounted filters: ultraviolet (U), blue (B), visual (V), red (R), and infrared (I).

The Optolong 1.25" UBVRI Filter Set is made with quality brand glass that has been multi-coated with an ion-assisted deposition technology to ensure scratch resistance and stability on the central wavelength, or CWL. This filter set is designed to be used in color filter wheels that accept 1.25" round mounted filters.

Quality Filter Materials:

Quality brand substrate material from Germany, 1.85 mm thick

Multiple layers of anti-reflection non-cementing coatings applied via electron-beam gun evaporation with ion-assisted deposition

Quality Finish

Filter substrate is fine-optically polished to 1/4 wave and <30 arc seconds deviation from parallelism over both surfaces.

Surface quality, according to MIL-O-13830, is 60/40

Optolong´s planetary rotation system is a homogenous and precise coating procedure that ensures both high transmission of pass-band and optical density of off-band

Each filter comes with a plastic case with high pressure EVA case lining.

Substrate:	High-quality optical glass
Surface Treatment:	Fine-optically polished
Surface Polish Quality:	60/40 (Refer to MIL-O-13830)
Surface Quality:	1/4 wavefront
Transmission:	more than 70% for U, more than 90% for the other four pass-bands
Cell:	1.25" filter cell