Generally In Stock, Please Confirm Before Ordering
Capture the cosmos with our best light pollution filter, the Optolong L-eXtreme. Boost contrast and signals even under urban skies. Perfect for DSLR and telescope astrophotography, it isolates celestial spectacles while eliminating 99.9% of light pollution.
The Major Emission Lines of Nebulae: H-α 656.3nm, H-β486.1nm, OIII 495.9nm, OIII 500.7nm The Major Emission Lines of Artificial Light Pollution: Hg 435.8nm, 546.1nm, 577nm, 578.1nm, Na 598nm, 589.6nm, 615.4nm, 616.1nm
Optolong will continue to optimize the product according to actual testing, therefore the above curve is not to be used as the final product data.
Available Sizes
1.25” mounted and 2” mounted are available now. Other sizes will be listed when become available.
Sample photos
Object: M42
Time : 15th.--16th. March 2020
Place: HongKong-Shatin
Camera : ZWO ASI183MC Pro
Telescope : f/5 @ Sky-Watcher N130/650 w coma corrector
Filter : Optolong L-eXtreme 2"
Mount : iOptron CEM25EC
Guide : 120mm mini guide scope, ZWO ASI120MM mini
Light pollution level 7~8(City center, light pollution disaster area)