Optolong L-Extreme Filter

Unlock the potential of your DSLR and CCD cameras with the Optolong L-eXtreme Filter. This dual-band pass filter, designed for DSLR CCD control, efficiently isolates H-Alpha and Oxygen III nebula emission lines, delivering unparalleled contrast and signal-to-noise ratio. Perfect for amateurs in light-polluted skies, this filter ensures rich nebula imaging even in challenging conditions. Explore the universe with Optolong's cost-effective and convenient L-eXtreme Filter.

1. L-eXtreme Introduction

The Optolong L-eXtreme Filter, featuring two 7nm bandpass filters, is tailor-made for one-shot color cameras like DSLRs and monochrome CCD cameras. Designed for fast systems, this filter is a game-changer for amateurs seeking rich emission nebula imaging, even in bright, light-polluted skies. Optolong's competitive pricing makes the L-eXtreme Filter the go-to choice for astrophotographers aiming to maximize contrast and signal-to-noise ratio between nebulae.

Key Points:

• Isolates H-Alpha and Oxygen III nebula emission lines.
• Suited for fast systems, including DSLR and monochrome CCD cameras.
• Ideal for capturing emission nebulas in light-polluted skies.
• Competitive pricing for amateur astronomers.

2. Difference and Advantage

Distinguished from the Optolong L-eNhance filter, the L-eXtreme is a dual-band pass filter that transmits H-Alpha and Oxygen III emission lines. The advantage lies in its precise isolation of these lines, with no transmission between H-beta and OIII lines. This unique feature effectively blocks light pollution, maximizing nebula signal and darkening the sky background during imaging.

Key Points:

• Dual-band pass filter transmitting Ha and OIII emission lines.
• No transmission between H-beta and OIII lines.
• Maximizes nebula signal, protecting against light pollution.
• Ideal for astrophotography in very light-polluted areas.

3. L-eXtreme Spectrum and Characteristics

Technical Specifications:

• Substrate: B270
• Thickness: 1.85mm
• Blocking range: 300-1000nm
• Blocking depth: Light pollution lines blocked >99%
• Surface quality: 60/40
• Transmitted Wavefront RMS: λ/4
• Parallelism: 30''

Spectrum and Characteristic Chart:

• Tpeak: T>90%
• Multi-layers anti-reflection coating.
• Non-cementing optical substrate coating.

4. Package Includes

• OPTOLONG L-eXtreme Filter
• Sturdy Plastic Case

Enhance your astrophotography experience with Optolong's cutting-edge L-eXtreme Filter. Immerse yourself in the wonders of the universe, capturing stunning images with maximum contrast and clarity. Whether you're a beginner or a seasoned astronomer, the L-eXtreme Filter is your key to unlocking the beauty of the night sky. Order now and embark on an astronomical journey like never before!