Optolong ND3 Filter 1.25"

Optolong ND Filter 1.25"

Introducing the Optolong ND3 Filter 1.25"

The Optolong ND3 Filter 1.25" is a versatile and essential tool for astronomers and astrophotographers who seek to observe and capture celestial objects with exceptional clarity and detail. This neutral density filter is specifically designed to reduce the overall brightness of an object without altering its color balance, making it perfect for observing bright planets like Venus, detailed lunar features, and splitting double stars. With its advanced construction and high-quality materials, the Optolong ND3 Filter ensures superior performance, making it an invaluable addition to your astronomical toolkit.

Features of the Optolong ND3 Filter 1.25"

The Optolong ND3 Filter 1.25" boasts a range of advanced features that cater to the needs of both professional and amateur astronomers:

• High Reduction Factor: The filter has an ND-3.0 rating, offering a 1,000 reduction factor and a transmission of 0.1%, significantly reducing the brightness of celestial objects.
• Uniform Light Transmission: The filter uniformly transmits all wavelengths of light, retaining the true color of the observed object.
• High-Quality Schott Glass: Made with B260 substrate material from Germany, 2.0mm thick, ensuring durability and stability on the central wavelength (CWL).
• Advanced Coating Technology: Features multiple layers of anti-reflection non-cementing coatings, applied via electron-beam gun evaporation with ion-assisted deposition for enhanced durability and scratch resistance.
• Precision Engineering: The filter cell is CNC machined from aero-metal, sand-blasted, black anodized, and laser engraved for a high-quality finish that resists fading.
• Ultra-Thin Design: The ultra-thin filter cell minimizes vignetting and maximizes the clear optical aperture of 26mm.
• Superior Surface Quality: The filter substrate is fine-optically polished to 1/4 wave and <30 parallelism over both surfaces, with a surface quality of 60/40 according to MIL-O-13830 standards.
• Durable Filter Cell: The CNC machined metal filter cell is lightweight yet strong, providing a clear aperture of 26mm.
• Protective Case: Each filter comes with a plastic case with high-pressure EVA case lining for added protection.

Applications of the Optolong ND3 Filter 1.25"

This filter is ideal for a variety of astronomical applications, particularly for observing and imaging bright celestial objects:

• Lunar Observation: Perfect for capturing detailed views of the Moon’s surface by reducing its brightness and revealing more features.
• Planetary Imaging: Enhances the visibility of bright planets like Venus, providing more detailed and clear images.
• Double Star Splitting: Reduces the glare of bright stars, making it easier to split double stars.
• Solar Observation (with a solar wedge): Can be used with a solar wedge to safely observe the Sun by significantly reducing its brightness (never use this filter alone for solar observation).

Benefits of Using the Optolong ND Filter 1.25"

Incorporating the Optolong ND3 Filter 1.25" into your astronomical setup offers numerous benefits:

• Superior Image Quality: Achieve high-contrast, detailed images of bright celestial objects by reducing their brightness.
• True Color Retention: The filter transmits all wavelengths of light uniformly, maintaining the true color of the observed object.
• Durable and Reliable: Constructed from high-quality materials and advanced manufacturing processes, the filter is built to last.
• Versatile Use: Suitable for both visual observation and astrophotography, providing excellent performance in various applications.

What is the Optolong ND3 Filter 1.25" Used For?

The Optolong ND3 Filter 1.25" is designed to reduce the overall brightness of celestial objects without altering their color balance. This makes it ideal for:

• Lunar Observation: Reducing the brightness of the Moon to reveal more surface details and features.
• Planetary Imaging: Enhancing the visibility of bright planets like Venus by reducing their glare.
• Double Star Splitting: Making it easier to observe and split double stars by reducing the brightness of the stars.
• Solar Observation (with a solar wedge): Safely observing the Sun by significantly reducing its brightness (always use with a solar wedge).

Usage Instructions for the 1.25" Optolong ND3 Filter

Using the Optolong ND3 Filter 1.25" is straightforward and efficient. Here’s how to get started:

1. Attach the Filter: Secure the filter to the 1.25-inch eyepiece or camera adapter of your telescope using the standard M28.5x0.6mm thread.
2. Adjust Focus: Adjust your telescope’s focus to get a clear view of your target object.
3. Observe or Photograph: Begin your observation or astrophotography session, taking advantage of the reduced brightness and enhanced clarity provided by the filter.
4. Store Safely: After use, store the filter in its protective case to prevent damage and contamination.

Tips for Getting the Best Results with the Optolong ND Filter

To maximize the performance of your Optolong ND3 Filter 1.25":

• Use in Clear Skies: For optimal results, use the filter under clear and dark skies.
• Combine with Other Filters: Consider using other filters for specific purposes, such as color filters for planetary observation.
• Regular Maintenance: Clean your filters and telescope lenses regularly to ensure the highest image quality.
• Safety First: When using the filter for solar observation, always use it with a solar wedge and never look at the Sun directly.

FAQ: Common Questions About the Optolong ND3 1.25" Filter

Q: Can I use the Optolong ND3 Filter with any telescope? A: Yes, the filter is compatible with any telescope that accommodates 1.25-inch eyepieces or camera adapters.

Q: Does the filter reduce brightness without altering color? A: Yes, the filter uniformly transmits all wavelengths of light, retaining the true color of the observed object.

Q: Is the filter suitable for both visual observation and astrophotography? A: Absolutely, the filter is designed for both purposes, offering versatility and high performance for all astronomical activities.

Q: Can I use this filter for sun observation? A: The filter can be used for solar observation only when used with a solar wedge. Never use this filter alone for direct solar observation.

Q: How should I clean and store the filter? A: Clean the filter gently with a soft, lint-free cloth and store it in its protective plastic case when not in use to prevent damage.

Why Should You Buy the Optolong ND3 Filter ?

The Optolong ND3 Filter 1.25" is an essential tool for anyone serious about astronomy and astrophotography. Its ability to reduce the brightness of celestial objects without altering their color makes it invaluable for capturing detailed images of the Moon, bright planets, and double stars. With its high-quality construction and advanced features, this filter will significantly improve your stargazing and imaging experience.

Specifications of the Optolong 1.25" ND3 Filter

• Filter Size: 1.25 inches
• Reduction Factor: 1,000
• Transmission: 0.1%
• Optical Quality: Multi-layer anti-reflection coating, non-cementing optical substrate coating
• Material: Schott B260 substrate glass, aluminum frame
• Surface Quality: 60/40 according to MIL-O-13830
• Surface Parallelism: 1/4λ, <30 parallelism over both surfaces
• Thread: Standard M28.5x0.6mm
• Shape: Round
• Net Weight: 3g / 0.12oz

Package Content

When you purchase the Optolong ND3 Filter 1.25", you will receive:

• 1 x Optolong ND3 Filter 1.25": The main component, designed to improve your astronomical observations.
• 1 x Protective Plastic Storage Case: Made from durable PP material to protect your filter when not in use.

Order Now

Transform your astronomical observations and astrophotography with the Optolong ND3 Filter 1.25". Order now to enjoy clear, high-contrast images of the Moon, bright planets, and double stars. Click the link below to add this essential tool to your collection today.

The Optolong ND3 Filter 1.25" is a powerful tool for any astronomer or astrophotographer looking to reduce the brightness of celestial objects and improve the visibility of fine details. With high reduction factors, advanced coating technology, and durable construction, this filter ensures that you can capture stunning, high-contrast images of the night sky with ease. Whether you’re observing from a suburban backyard or a light-polluted urban environment, the Optolong ND3 filter will help you see the universe in greater detail than ever before. Don't miss out on the opportunity to improve your stargazing and astrophotography experience. Order your Optolong ND3 Filter 1.25" today and start capturing the cosmos with unmatched clarity and precision.