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Your partner for astronomy

Optolong is located in Kunming, Yunnan Province, and was founded in 1999. After 18 years of development, a product range has been created, consisting mainly of astronomical fluorescence filters: filters and bandpass filters, complimented by ultraviolet and infrared filters, together with other optical filters. The company currently employs almost 60 members of staff and the factory space occupies more than 2,000 ㎡. With high-quality products, an extensive range and reasonable prices, Optolong is a reliable partner for astronomical filters.

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Optolong Filters UHC Filter 1,25
Optolong
Filters UHC Filter 1,25
( 5 / 5 )
$ 75.00
ready for shipping in 24 h
Optolong Filters Clip Filter for Canon EOS APS-C OWB
Optolong
Filters Clip Filter for Canon EOS APS-C OWB
$ 97.00
ready for shipping in 24 h
Optolong Filters L-Pro 1.25''
Optolong
Filters L-Pro 1.25''
$ 173.00
ready for shipping in 24 h
Optolong Filters L-Pro 2''
Optolong
Filters L-Pro 2''
$ 228.00
ready for shipping in 24 h
Optolong Filters Clip Filter for Canon EOS APS-C CLS
Optolong
Filters Clip Filter for Canon EOS APS-C CLS
Our price:
RRP:  $ 108.00
$ 86.00
ready for shipping in 24 h
Optolong Filters Filter L-eNhance 1.25
Optolong
Filters Filter L-eNhance 1.25
$ 206.00
ready for shipping in 24 h
Optolong Filters SII Filter 1.25"
Optolong
Filters SII Filter 1.25"
$ 108.00
ready for shipping in 24 h
Optolong Filters LRGB Filter-Set 1,25
Optolong
Filters LRGB Filter-Set 1,25
$ 282.00
ready for shipping in 24 h
Optolong Filters Clip Filter for Canon EOS FF H-Alpha
Optolong
Filters Clip Filter for Canon EOS FF H-Alpha
$ 271.00
ready for shipping in 3-5 weeks
Optolong Filters LRGB Filter-Set 2"
Optolong
Filters LRGB Filter-Set 2"
$ 401.00
ready for shipping in 24 h
Optolong Filters Clear Sky Filter 82mm
Optolong
Filters Clear Sky Filter 82mm
$ 238.00
ready for shipping in 24 h
Optolong Filters L-eXtreme 1,25"
Optolong
Filters L-eXtreme 1,25"
$ 271.00
ready for shipping in 24 h
Optolong Filters Clip Filter for Canon EOS APS-C L-Pro
Optolong
Filters Clip Filter for Canon EOS APS-C L-Pro
Our price:
RRP:  $ 282.00
$ 238.00
ready for shipping in 24 h
Optolong Filters Clear Sky Filter 77mm
Optolong
Filters Clear Sky Filter 77mm
$ 184.00
ready for shipping in 24 h
Optolong Filters Clip Filter for Canon EOS APS-C H-Alpha
Optolong
Filters Clip Filter for Canon EOS APS-C H-Alpha
Sale price:
$ 249.00
$ 140.16
ready for shipping in 24 h
Optolong Filters SII Filter 2
Optolong
Filters SII Filter 2
$ 260.00
ready for shipping in 24 h
Optolong Filters Venus U-Filter 2''
Optolong
Filters Venus U-Filter 2''
$ 282.00
ready for shipping in 24 h
Optolong Filters Clip Filter for Canon EOS FF UHC
Optolong
Filters Clip Filter for Canon EOS FF UHC
Our price:
RRP:  $ 141.00
$ 105.00
ready for shipping in 24 h
Optolong Filters Clip Filter for Nikon Full Frame L-Pro
Optolong
Filters Clip Filter for Nikon Full Frame L-Pro
( 1 / 5 )
Our price:
RRP:  $ 304.00
$ 259.00
ready for shipping in 24 h
Optolong Filters Clip Filter for Canon EOS FF L-Pro
Optolong
Filters Clip Filter for Canon EOS FF L-Pro
Our price:
RRP:  $ 380.00
$ 259.00
ready for shipping in 24 h
Optolong Filters Clip Filter for Canon EOS APS-C CLS-CCD
Optolong
Filters Clip Filter for Canon EOS APS-C CLS-CCD
Our price:
RRP:  $ 141.00
$ 105.00
ready for shipping in 24 h
Optolong Filters L-Ultimate 3nm 2"
Optolong
Filters L-Ultimate 3nm 2"
$ 434.00
ready for shipping in 24 h
Optolong Filters H-alpha 3nm 2"
Optolong
Filters H-alpha 3nm 2"
$ 499.00
ready for shipping in 3-5 weeks
Optolong Filters SHO Filter Kit 3nm 2"
Optolong
Filters SHO Filter Kit 3nm 2"
$ 1,300.00
ready for shipping in 24 h
Optolong Filters SII 3nm 2"
Optolong
Filters SII 3nm 2"
$ 499.00
ready for shipping in 24 h
Optolong Filters L-Pro Filter 77mm
Optolong
Filters L-Pro Filter 77mm
$ 391.00
ready for shipping in 24 h
Optolong Filters Planetary Filter Set 2"
Optolong
Filters Planetary Filter Set 2"
$ 434.00
ready for shipping in 24 h
Optolong Filters OIII 3nm 2"
Optolong
Filters OIII 3nm 2"
$ 499.00
ready for shipping in 24 h
Optolong Filters Planetary Filter Set 1.25"
Optolong
Filters Planetary Filter Set 1.25"
$ 293.00
ready for shipping in 24 h
Optolong Filters L-eXtreme 2"
Optolong
Filters L-eXtreme 2"
$ 358.00
ready for shipping in 24 h
Optolong Filters L-eNhance APS-C EOS Clip
Optolong
Filters L-eNhance APS-C EOS Clip
( 3.5 / 5 )
$ 293.00
ready for shipping in 24 h
Optolong Filters L-eNhance 2"
Optolong
Filters L-eNhance 2"
( 5 / 5 )
$ 260.00
ready for shipping in 24 h
Optolong Filters UHC Filter, 2"
Optolong
Filters UHC Filter, 2"
$ 108.00
ready for shipping in 24 h
Optolong Filters L-Pro Canon EOS R Clip
Optolong
Filters L-Pro Canon EOS R Clip
$ 325.00
ready for shipping in 24 h
Optolong Filters L-Pro Clip Sony Full Frame
Optolong
Filters L-Pro Clip Sony Full Frame
$ 304.00
ready for shipping in 24 h
Optolong Filters Clip Filter for Canon EOS APS-C UHC
Optolong
Filters Clip Filter for Canon EOS APS-C UHC
Our price:
RRP:  $ 108.00
$ 86.00
ready for shipping in 24 h