Optolong 2" L-Quad Enhance Filter

Discover the wonders of the night sky with the Optolong 2" L-Quad Enhance Filter, a cutting-edge quad bandpass light pollution suppression filter designed for color cameras. Elevate your astrophotography experience with this advanced filter that effectively combats the impact of light pollution, offering stunning results with enhanced contrast and intricate celestial details.

Discover the wonders of the night sky with the Optolong 2" L-Quad Enhance Filter, a cutting-edge quad bandpass light pollution suppression filter designed for color cameras. Elevate your astrophotography experience with this advanced filter that effectively combats the impact of light pollution, offering stunning results with enhanced contrast and intricate celestial details.

Key Features:

1. Light Pollution Suppression: The L-Quad Enhance Filter (L-QEF) cuts out unwanted light pollution from mercury and sodium lamps, providing a clean and broadband image with minimal color cast.
2. Signal-to-Noise Ratio (SNR): Benefit from improved SNR, ensuring your astrophotographs showcase clear and detailed images.
3. Near Infrared Cut-Off: With a cut-off to 1000nm, the L-QEF reduces the effects of infrared noise, contributing to cleaner and more precise shots.
4. Quad Bandpass Design: The quad bandpass design maximizes the color balance of nebulae, galaxies, and other broadband spectral targets, making it ideal for a wide range of deep-sky astrophotography.
5. Resistance to Light Pollution: With over 90% transmittance of nebula emission lines at H-Beta/OIII/H-Alpha/SII, and cut-off depths ranging from OD2 to OD4, the L-QEF significantly increases resistance to light pollution, suitable for night skies from Bortle 1 to Bortle 7 levels.
6. Versatile Applications: Suitable for wide-field astrophotography, capturing the beauty of the Milky Way in Summer and Winter, as well as deep sky objects such as nebulae, galaxies, and star clusters.

Spectrum and Characteristic:

• Substrate: Optical glass
• Thickness: 1.85mm
• FWHM: Quad bandpass filter
• Blocking Range: 300-1000nm
• Blocking Depth: OD2-OD4
• 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 (central wavelength), 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.

How to Read the Chart:

• The horizontal axis represents Wavelength in Nanometers (nm).
• The vertical axis represents transmission in %.

Why Choose the Optolong 2" L-Quad Enhance Filter?

Light Pollution Suppression

One of the most significant challenges in astrophotography is dealing with light pollution, which can wash out the night sky and obscure celestial details. The Optolong 2" L-Quad Enhance Filter effectively cuts out unwanted light pollution from mercury and sodium lamps, providing a clean and broadband image with minimal color cast.

Improved Signal-to-Noise Ratio (SNR)

Astrophotography often involves long exposure times, which can introduce noise into your images. The Optolong L-Quad Enhance Filter improves the SNR, ensuring your astrophotographs showcase clear and detailed images. This is crucial for capturing the faint details of deep-sky objects.

Near Infrared Cut-Off

The filter features a near-infrared cut-off up to 1000nm, reducing the effects of infrared noise and contributing to cleaner, more precise shots. This enhances the overall quality of your images, making them sharper and more detailed.

Quad Bandpass Design

The innovative quad bandpass design maximizes the color balance of nebulae, galaxies, and other broadband spectral targets. This makes it ideal for a wide range of deep-sky astrophotography, ensuring vibrant and accurate color reproduction in your images.

Resistance to Light Pollution

With over 90% transmittance of nebula emission lines at H-Beta, OIII, H-Alpha, and SII, and cut-off depths ranging from OD2 to OD4, the Optolong L-Quad Enhance Filter significantly increases resistance to light pollution. It is suitable for night skies from Bortle 1 to Bortle 7 levels, making it versatile and effective in various observing conditions.

Benefits of the Optolong 2" L-Quad Enhance Filter

Enhanced Image Quality

The filter’s multi-layer anti-reflection coating and non-cementing optical substrate coating ensure durability and resistance to scratching. This enhances light transmission for optimal image quality, making your astrophotography sessions more productive and enjoyable.

Precision Coating Technology

Using ion-assisted deposition coating technology, the filter maintains stability on the central wavelength (CWL), unaffected by temperature changes. The planetary rotation system offers precision and homogeneity of coatings, ensuring high value on transmission of pass-band and optical density of off-band.

Versatile Applications

The Optolong L-Quad Enhance Filter is suitable for wide-field astrophotography, capturing the beauty of the Milky Way in both Summer and Winter. It is also ideal for imaging deep-sky objects such as nebulae, galaxies, and star clusters, making it a versatile addition to your astrophotography toolkit.

Usage Tips

1. Optimal Setup: Ensure your telescope and camera are properly aligned and calibrated before using the filter to maximize its effectiveness.
2. 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.
3. Temperature Adjustments: Allow your equipment to reach ambient temperature before starting your imaging session, as temperature variations can affect the filter’s performance.
4. Regular Maintenance: Clean the filter using appropriate lens cleaning solutions and cloths to maintain its optical clarity and performance.

Common Questions

Q: Can the Optolong 2" L-Quad Enhance 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-Quad Enhance 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.

What is the Optolong 2" L-Quad Enhance Filter Used For?

The Optolong 2" L-Quad Enhance Filter is used to capture high-quality deep-sky astrophotography images. It isolates and enhances specific wavelengths, which are crucial for detailed and accurate color reproduction in images of nebulae, galaxies, and other celestial objects. The filter is also effective in suppressing light pollution, making it an invaluable tool for urban and suburban astrophotographers.

Why Should You Buy the Optolong 2" L-Quad Enhance Filter?

Professional-Grade Astrophotography

Investing in the Optolong 2" L-Quad Enhance Filter 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.

Capture Stunning Celestial Images

Whether you’re a seasoned astrophotographer or just starting, the Optolong L-Quad Enhance Filter helps you capture stunning images of nebulae, galaxies, and star clusters. Its ability to enhance contrast and detail ensures that your photos are visually striking and scientifically accurate.

Overcome Light Pollution

The filter’s advanced design allows you to overcome the challenges of light pollution, providing clear and detailed images even in urban and suburban environments. This makes it possible to pursue astrophotography in locations that would otherwise be unsuitable due to light pollution.

Popular Targets for This Filter

The Optolong 2" L-Quad Enhance 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

• Substrate: Optical glass
• Thickness: 1.85mm
• FWHM: Quad bandpass filter
• Blocking Range: 300-1000nm
• Blocking Depth: OD2-OD4
• 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

• 1 x Optolong 2" L-Quad Enhance Filter
• 1 x Protective Case
• 1 x User Manual

Customer Testimonials

Emma W. – Professional Astrophotographer

“The Optolong 2" L-Quad Enhance Filter has transformed my astrophotography. The clarity and detail I can achieve, even in light-polluted skies, are incredible. This filter is a must-have for anyone serious about capturing the night sky.”

James R. – Amateur Astronomer

“As an amateur astronomer, I was struggling with light pollution in my area. The Optolong L-Quad Enhance Filter has been a game-changer. It’s easy to use and has significantly improved the quality of my photos.”

Olivia K. – Astrophotography Enthusiast

“I’ve been using the Optolong L-Quad Enhance Filter for a few months now, and I’m thrilled with the results. The color accuracy and detail in my images have never been better. Highly recommend this filter to all astrophotographers.”

Optolong L-Quad Enhance Filter 2" Inch

The Optolong 2" L-Quad Enhance Filter is an essential tool for any astrophotographer looking to capture the night sky in stunning detail. Its advanced design, high-quality construction, and versatile applications make it a standout choice for both amateur and professional astrophotographers. Whether you’re shooting nebulae, galaxies, or star clusters, this filter will help you achieve breathtaking results with accurate color reproduction and minimal light pollution interference.

Upgrade your astrophotography setup today with the Optolong 2" L-Quad Enhance Filter and capture the beauty of the cosmos like never before. With its superior performance and durability, it’s an investment that will enhance every shot you take.