Optolong UBVRI 5pcs Scientific Research Filter Optical Photometry Filters For Calibrating The Data With Reference Stars

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Product Overview


Product Description

Brief Introcuction of Photometric Filters UBVRIs
Optolong UBVRI filters are not for astrophotography. Historically our Solid-State Photometers used custom filters designed to transform well to the Johnson photometry standards with our detectors.

In fact, they are used to do photometry. So it’s in a more scientific application. In photometry, you measure the light coming from a star. By calibrating the data with reference stars, we’re able to get precise measurements on the flux coming out of a star. Combined with a measurement of the distance of the star (that is usually found by satellite to have precise measurements of far stars), we’re able to find fundamental parameters of the stars. Those fundamental parameters are usually the mass, the radius and the temperature of the star.


Optical imaging glass
Surface Quality
CWL Transmittance
Technical Data1
High transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm&500nm, SII 672nm and H-beta 486nm).
Technical Data2
Precision off-band blocking, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm).

Company Profile

Company story
Optolong Optics Co.,ltd supply fluorescence filters and astronomical filters form 1999, we have distributor around the word and had 20 years of experience in the filter industry, mainly including standard products for fluorescence filters, OEM products, and standard products for astronomical filters. Regarding the company details,please browse our website:
Astronomical Filters website:http://optolong.com/cms/index/index.html
Fluorescence Filters website:https://optolongfilter.com/

Our Advantages

Company and main product introduction / Hot Sale Products
Company profile: We are a china manufacturer of astronomy filters, fluorescence filters and microscops cubes since 1999.
Main products are as follows:
1. Bandpass Filters 254-1100nm transmission and 200-2000nm cut off for optical sensor and imaging processing application.
2. Fluorescent filters standard: Bandpass : DAPI, FITC, TRITC, TexasRed, (Cy5, FAM, ROX, HEX)PCR filter series ; Longpass : LP-DAPI, LP-FITC , LP-TRITC , LP-TexasRed ; Fish series: Fish-Aqua , Fish-Green ,Fish-Orange,Fish-Red ; Dual Band : Green- Orange ; Triple Band :DAPI-Green-Orange.
3. Fluorescence filters OEM: OEM exitation filter, emission filter, dichroic filter for fluorescence detection instrument.
4. Astronomy filters standard:L-Pro, L-eNhance, L-eXtreme, L-Ultimate, Moon Skyglow, Clear Sky, UHC, LRGB, SII, H-alpha, OIII, CLS, CLS-CCD, ND filter ,SHO-3nm,SHO-7nm,UV IR Cut,IR Pass 685nm,Planet filter set.
5. Beam splitter, High-reflect mirror, Optical window,Anti-reflect mirror 222-1200nm transmission,Longpass filter 254-2000nm transmission and 200-1200nm cut off, Shortpass filter 254-1200nm transmission and 300-1500nm cut off.



Our service

1. Customize size,thickness,shape as your needed
2. Many material could be choosed, like K9,BK7,B270,D263T,JGS1,Color glass, Float glass, Fused Silica
3. AR HR Hard coating or as your requirements
4. After-sales guarantee service,Optolong is responsible for every piece of optical filter sold

Packing & Delivery

1,Super clean workshops,protected with PE Film,no need to clean,available at any time,with lowest labor cost;
2,Wrapping with vaccum,damp-proof,dust-proof bag;
3,Plastic box,High-density carton,with protective sponge inside;

0.0112 s.