Astronomik L1 Filter
Best essential filter for astrophotographers seeking sharper, clearer deep-space images.
This filter is the essential gatekeeper for your sensor, stripping away distracting UV and infrared light to reveal the true clarity of the night sky. You sacrifice a bit of the full spectrum, but you gain the sharp, high-contrast images that define professional-grade astrophotography.
$129.95
at
Highpointscientific
More Luminance Filter options
Who it's for
- Astrophotographers seeking sharper stars and improved image contrast
- Deep-sky imagers needing maximum light efficiency for faint targets
- Frequent observers requiring long-term durability and easy maintenance
Who should skip it
- Budget-conscious hobbyists looking for more affordable optical solutions
- Urban astronomers needing help with heavy light pollution
- Users with large sensors or fast telescopes prone to vignetting
Performance breakdown
Spectral Purity
Effectively isolates visible light by cutting out unwanted UV and IR.
Light Transmission
High-efficiency coating ensures maximum photon capture for dim deep-sky targets.
Optical Clarity
Fine-polished glass maintains sharp focus across the entire sensor plane.
Build Durability
Scratch-resistant multi-coatings withstand the rigors of frequent field use.
System Compatibility
Standard sizing integrates seamlessly with most filter wheels and telescope setups.
Sensor Protection
Reliable barrier against harmful radiation extends the life of sensitive hardware.
Key Specs
Filter Type
UV-IR Cut Luminance
Filter Size
50mm
Filter Shape
Square
Filter Wavelength
385 nm - 695 nm
Filter Bandwidth
310 nm
Filter Optical Thickness
1 mm
Barrel Diameter
2 inches
Thread Size
M48 x 0.75
Coating
Astronomik MFR
Warranty
10 Years
Know before you buy
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