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Filters > L-RGB Filters > Optolong > Optolong Filters UBVRI set photometric 2''
Product no.: 59438

Filters UBVRI set photometric 2''

RRP: $ 940.00 Our price:
$ 770.00 incl. VAT plus shipping costs
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Delivery possible before Christmas (European destinations) - when you order by 18.12.!
Right of return up to January 31 2025!


Product description

Optolong UBVRI photometric Filter Set - mounted

This photometric UBVRI filter set includes five 1.25" or 2" round mounted filters: ultraviolet (U), blue (B), visual (V), red (R), and infrared (I).

The Optolong 1.25" or 2" 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" or 2" 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
  • Optolongs 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.

Please note that this filter must never be used as the only solar filter!

Specifications

Capacity


Coating of optical system
multiple
Frame
2"
Transmission
70
Surface accuracy
1/4

General


Material
Schott glass
Type
Filters

Area of application


Useful for photographs
yes
Venus
yes
Visually useful
no
Optolong Filters UBVRI set photometric 2''

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