Technical data sheet

Optolong L-eXtreme 2" – Dual-Band Ha and OIII Astronomical Filter

The Optolong L-eXtreme 2" is a dual-band astronomical filter specifically designed for color deep-sky astrophotography. With a bandwidth of approximately 7nm for each line, it precisely selects the Hydrogen-Alpha (656nm) and Oxygen III (500.7nm) wavelengths, drastically reducing light pollution. Perfect for capturing emission nebulae and HII regions, it allows for high-contrast, detailed images with natural colors even from urban skies.

  • Dual-band Ha and OIII astronomical filter
  • Standard 2" (48mm) diameter
  • Narrow bandwidth (~7nm) for each channel
  • Effective light pollution reduction
  • Optimized for nebulae and HII regions
  • Compatible with color CMOS/CCD cameras and modified DSLRs
  • Precision optical glass with multi-layer coating
  • Anti-reflective black anodized aluminum frame

Technical specifications

Parameter Value
Model Optolong L-eXtreme 2"
Type Dual-band astronomical filter
Diameter 2" (48mm)
Wavelengths Ha (656nm), OIII (500.7nm)
Bandwidth ~7nm per channel
Transmission >90% at main lines
Material Precision optical glass
Treatment Multi-layer anti-reflective coating
Compatibility Color CMOS/CCD, modified DSLRs
Applications Deep-sky nebula astrophotography
Frame Anti-reflective black anodized aluminum
Free shipping in Italy
Products with a price over 199.99 € qualify for free shipping.

Note: Official Optolong warranty with support and technical assistance in Italy.

Optolong L-eXtreme 2" – Dual-Band Ha and OIII Astronomical Filter

The Optolong L-eXtreme 2" is a dual-band astronomical filter specifically designed for color deep-sky astrophotography. With a bandwidth of approximately 7nm for each line, it precisely selects the Hydrogen-Alpha (656nm) and Oxygen III (500.7nm) wavelengths, drastically reducing light pollution. Perfect for capturing emission nebulae and HII regions, it allows for high-contrast, detailed images with natural colors even from urban skies.

  • Dual-band Ha and OIII astronomical filter
  • Standard 2" (48mm) diameter
  • Narrow bandwidth (~7nm) for each channel
  • Effective light pollution reduction
  • Optimized for nebulae and HII regions
  • Compatible with color CMOS/CCD cameras and modified DSLRs
  • Precision optical glass with multi-layer coating
  • Anti-reflective black anodized aluminum frame

Technical specifications

Parameter Value
Model Optolong L-eXtreme 2"
Type Dual-band astronomical filter
Diameter 2" (48mm)
Wavelengths Ha (656nm), OIII (500.7nm)
Bandwidth ~7nm per channel
Transmission >90% at main lines
Material Precision optical glass
Treatment Multi-layer anti-reflective coating
Compatibility Color CMOS/CCD, modified DSLRs
Applications Deep-sky nebula astrophotography
Frame Anti-reflective black anodized aluminum
Free shipping in Italy
Products with a price over 199.99 € qualify for free shipping.

Note: Official Optolong warranty with support and technical assistance in Italy.

66894

Optolong L-eXtreme 2" – Ha and OIII Dual-Band Astronomical Filter

€290,00
€290,00
Tax included.
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Optolong L-eXtreme 2" – Dual-Band Ha and OIII Astronomical Filter The Optolong L-eXtreme 2" is a dual-band astronomical filt...  Read more

Optolong L-eXtreme 2" – Dual-Band Ha and OIII Astronomical Filter

The Optolong L-eXtreme 2" is a dual-band astronomical filter specifically designed for color deep-sky astrophotography. With a bandwidth of approximately 7nm for each line, it precisely selects the Hydrogen-Alpha (656nm) and Oxygen III (500.7nm) wavelengths, drastically reducing light pollution. Perfect for capturing emission nebulae and HII regions, it allows for high-contrast, detailed images with natural colors even from urban skies.

  • Dual-band Ha and OIII astronomical filter
  • Standard 2" (48mm) diameter
  • Narrow bandwidth (~7nm) for each channel
  • Effective light pollution reduction
  • Optimized for nebulae and HII regions
  • Compatible with color CMOS/CCD cameras and modified DSLRs
  • Precision optical glass with multi-layer coating
  • Anti-reflective black anodized aluminum frame

Technical specifications

Parameter Value
Model Optolong L-eXtreme 2"
Type Dual-band astronomical filter
Diameter 2" (48mm)
Wavelengths Ha (656nm), OIII (500.7nm)
Bandwidth ~7nm per channel
Transmission >90% at main lines
Material Precision optical glass
Treatment Multi-layer anti-reflective coating
Compatibility Color CMOS/CCD, modified DSLRs
Applications Deep-sky nebula astrophotography
Frame Anti-reflective black anodized aluminum
Free shipping in Italy
Products with a price over 199.99 € qualify for free shipping.

Note: Official Optolong warranty with support and technical assistance in Italy.
Free Shipping
Free shipping in Italy on orders over €199.99
24/48h delivery
If the product is available, it will be delivered within 24/48 hours.
Fast Deliveries
Fast Shipping with DHL or BRT
60-day return policy
From the date of purchase, you have 60 days to make a return.

Terms and conditions

You can return the product within 60 days of purchase. View the terms and conditions of sale.
Warranty up to 5 years
Discover how to get the 5-Year Warranty
Secure and certified payment methods
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