Optolong L-Pro 1.25" | PixelSkiesAstro
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  • Optolong L-Pro 1.25" | PixelSkiesAstro
  • Optolong L-Pro 1.25" | PixelSkiesAstro

Optolong L-Pro 1.25"

€149.00
Tax included

Optolong L-Pro filter 1.25" The L-Pro is a multi-bandpass broadband light-pollution filter that keeps natural colour balance. It suppresses the main artificial lines (Na 589 nm, Hg 435 and 578 nm) while staying highly transparent at H-beta, OIII, H-alpha, NII and SII, suiting galaxies, reflection nebulae and star clusters as well as visual use.

Manufacturer model: Optolong L-Pro 1.25" · Specifications checked against manufacturer data on 2026-11-03

Optolong L-Pro filter 1.25"

The L-Pro is a multi-bandpass broadband light-pollution filter that keeps natural colour balance. It suppresses the main artificial lines (Na 589 nm, Hg 435 and 578 nm) while staying highly transparent at H-beta, OIII, H-alpha, NII and SII, suiting galaxies, reflection nebulae and star clusters as well as visual use.

Specifications

Format 1.25" mounted
Type Multi-bandpass broadband light-pollution filter
Spectrum 380–750 nm
Blocked lines Na 589 nm; Hg 435 and 578 nm
High transmission H-beta 486, OIII 496/500, NII 654/658, H-alpha 656, SII 672 nm
Material Optical glass
Surface quality 60/40 (MIL-O-13830)
Transmitted wavefront λ/4
Parallelism <30"

Coating

Multi-layer anti-reflection coating on a non-cemented substrate, applied by ion-assisted deposition for durability and a stable centre wavelength with temperature.

Manufacturer documentation

Optolong L-Pro 1.25"

Compatibility notes

Optolong L-Pro 1.25" mounted. Not the camera clip-in or 77/82 mm versions.

Additional specifications

Spectrum380–750 nm
Blocked linesNa 589 nm; Hg 435 and 578 nm
High transmissionH-beta 486, OIII 496/500, NII 654/658, H-alpha 656, SII 672 nm
59433

Data sheet

Format
1.25" mounted
Material
Optical glass
Parallelism
＜30"
Surface quality
60/40 (MIL-O-13830)
Transmitted wavefront
λ/4
Type
Multi-bandpass broadband light-pollution filter
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