Optolong L-Extreme Dual-Band Filter 2" Inch

Optolong L-Extreme Dual-Band Filter 2"

Introducing the Optolong L-Extreme Dual-Band Filter 2" Inch

The Optolong L-Extreme Dual-Band Filter 2" Inch is a powerful tool designed to help astrophotographers capture the beauty of the night sky with unparalleled clarity and contrast. This advanced filter is engineered to isolate the H-alpha and Oxygen III (OIII) nebula emission lines, making it an essential accessory for deep-sky imaging, especially in light-polluted environments. Whether you are using a DSLR, color CMOS, or monochrome CCD camera, the L-Extreme filter significantly enhances the visibility of emission nebulae, providing high-quality, detailed images that stand out.

Features of the Optolong L-Extreme Dual-Band Filter 2"

The Optolong L-Extreme Dual-Band Filter is packed with features that make it a top choice for astrophotographers:

• Dual-Band Pass Design: Isolates H-alpha and OIII emission lines, maximizing the contrast and signal-to-noise ratio between nebulae and the sky background.
• High Transmission Rate: Achieves very high transmission (~90%) at the H-alpha (656nm) and OIII (500nm) lines.
• Precision Off-Band Blocking: Blocks unwanted light pollution, including common city lights and skyglow, ensuring clearer and more detailed images.
• Durable Construction: Made from B270 optical glass with advanced multi-layer coatings for enhanced durability and performance.
• Fine-Optically Polished: Ensures accurate λ/4 wavefront and <30 seconds parallelism over both surfaces for superior optical quality.
• Ion Source Assisted Coating: Provides stability on CWL (central wavelength), unaffected by temperature changes.
• Standard 2" Mount: Fits all standard 2" eyepiece holders, making it compatible with a wide range of telescopes.

Applications of the Optolong L-Extreme Dual-Band Filter 2" Inch

The versatility of the Optolong L-Extreme Dual-Band Filter makes it suitable for various astrophotography applications:

• Deep-Sky Imaging: Perfect for capturing detailed images of emission nebulae, planetary nebulae, and supernova remnants.
• Wide-Field Astrophotography: Ideal for photographing large sections of the night sky, including the Milky Way.
• Light-Polluted Environments: Designed to combat the effects of light pollution from urban and suburban areas, making it easier to capture clear and detailed images of celestial objects.
• Moonlit Nights: Effective for imaging when the moon is out, reducing the impact of moonlight on your photos.

Benefits of Using the Optolong L-Extreme Dual-Band Filter 2" Inch

• Enhanced Image Quality: Achieve higher contrast and more detailed images of deep-sky objects.
• Reduced Light Pollution Impact: Effectively reduces the impact of artificial light pollution, allowing for clearer observations and imaging.
• Better Signal-to-Noise Ratio: Maximizes the contrast between nebulae and the sky background, ensuring your astrophotographs are clear and detailed.
• Durable and Reliable: Built with high-quality materials to ensure longevity and consistent performance.
• Versatile Use: Suitable for a wide range of astrophotography applications, making it a valuable addition to your toolkit.

What the Optolong L-Extreme Dual-Band Filter 2" Inch is Used For

The Optolong L-Extreme Dual-Band Filter is primarily used for capturing and enhancing images of deep-sky objects such as nebulae. By isolating the H-alpha and OIII emission lines, it enables astrophotographers to obtain clearer and more detailed images, even in light-polluted environments.

How to Use the Optolong L-Extreme Dual-Band Filter 2"

Using the Optolong L-Extreme Dual-Band Filter is straightforward and effective:

1. Attach the Filter: Screw the filter into the eyepiece or camera adapter of your telescope.
2. Align Your Telescope: Point your telescope at the celestial object you wish to observe or photograph.
3. Adjust Camera Settings: For astrophotography, adjust your camera settings to accommodate the filter, ensuring proper exposure times.
4. Observe and Capture: Begin your observations or start capturing images. The filter will enhance the visibility and detail of the celestial object, providing clearer and more vibrant views.

Tips for Using the 2" Inch Optolong L-Extreme Dual-Band Filter

• Optimal Setup: Ensure your telescope and camera are properly aligned and calibrated before using the filter to maximize its effectiveness.
• Light Pollution Considerations: While the filter is designed to suppress light pollution, choosing observing sites with minimal artificial light interference will yield the best results.
• Temperature Adjustments: Allow your equipment to reach ambient temperature before starting your imaging session, as temperature variations can affect the filter’s performance.
• Regular Maintenance: Clean the filter using appropriate lens cleaning solutions and cloths to maintain its optical clarity and performance.

Frequently Asked Questions (FAQ) About the Optolong L-Extreme Dual-Band Filter 2" Inch

Q: Can the Optolong L-Extreme Filter be used for visual observation? A: The filter is primarily designed for imaging with color cameras. While it can be used for visual observation, its main benefits are realized in astrophotography.

Q: How does the filter perform in heavily light-polluted areas? A: The Optolong L-Extreme Filter is highly effective in suppressing light pollution, making it suitable for use in heavily light-polluted areas. It isolates emission lines from background light pollution, enhancing the visibility of celestial objects.

Q: Is the filter compatible with all types of telescopes? A: The filter is designed to be compatible with a wide range of telescopes that use a 2" mounting system. This includes refractors, reflectors, and compound telescopes.

Why Should You Buy the Optolong L-Extreme Dual-Band 2" Inch Filter

Investing in the Optolong L-Extreme Dual-Band Filter 2" Inch means achieving professional-grade astrophotography results. Its superior construction, light pollution suppression capabilities, and compatibility with a wide range of equipment make it an invaluable tool for capturing the beauty of the night sky in vivid detail.

Popular Targets with the Optolong L-Extreme Dual-Band Filter 2" Inch

The Optolong L-Extreme Filter is perfect for capturing a variety of celestial objects:

• Nebulae: Achieve stunning images of emission and reflection nebulae with enhanced color and detail.
• Galaxies: Capture the intricate details and structures of distant galaxies with high contrast and clarity.
• Star Clusters: Bring out the beauty of star clusters, highlighting their color and structure against the backdrop of space.
• Milky Way: Capture the grandeur of the Milky Way in both Summer and Winter, showcasing its intricate structure and colors.

Specifications of the 2" Optolong L-Extreme Dual-Band Filter

• Substrate: Optical glass (B270)
• Thickness: 1.85mm
• FWHM: Dual-band pass filter (OIII 7nm + H-alpha 7nm)
• Blocking Range: 300-1000nm
• Blocking Depth: Light pollution lines blocked >99.9%
• Surface Quality: 60/40
• Transmitted Wavefront RMS: λ/4
• Parallelism: 30s
• Size: 2" Inch

Coating Technology

• Multi-Layers Anti-Reflection Coating: Enhances light transmission for optimal image quality.
• Non-Cementing Optical Substrate Coating: Ensures durability and resistance to scratching.
• Ion-Assisted Deposition Coating Technology: Precision coating for stability on CWL, unaffected by temperature changes.
• Planetary Rotation System: Offers precision and homogeneity of coatings, ensuring high value on transmission of pass-band and optical density of off-band.

Package Content of the Optolong L-Extreme Filter 2" Inch

• Optolong 2" L-Extreme Dual-Band Filter
• Protective Case
• User Manual

Caution When Using the Optolong L-Extreme Filter

• Handle with Care: The filter is made of high-quality glass that can be damaged if dropped or mishandled.
• Avoid Direct Sunlight: Never use the filter to observe the sun or bright light sources, as this can damage your eyes and the filter.
• Proper Storage: Keep the filter in its protective case when not in use to prevent scratches and dust accumulation.

Important Note on the Optolong L-Extreme Filter 2"

This filter is designed for imaging and is not suitable for visual observation. It is specifically crafted to improve deep-sky imaging by isolating key emission lines and reducing light pollution. For best results, use this filter with a camera setup that is sensitive to the wavelengths it isolates.

Order Now

The Optolong L-Extreme Dual-Band Filter 2" Inch is an essential tool for anyone serious about astronomical observation and astrophotography. Its ability to isolate specific wavelengths and reduce light pollution impact makes it invaluable for capturing stunning images of deep-sky objects. Don't miss the opportunity to add this high-quality filter to your astronomical toolkit. Order now and take your astrophotography to new heights!