Optolong OIII 18nm Filter 1.25"

Introducing the Optolong OIII 18nm Filter 1.25"

Welcome to the world of stargazing transformed. The Optolong OIII 18nm Filter 1.25" is your gateway to an unparalleled viewing experience, crafted specifically for the 1.25 inch telescope eyepiece. As amateur astronomers seek clearer views under light-polluted skies, this filter emerges as an essential tool, meticulously designed to drastically reduce light pollution while enhancing the visibility of nebulae and distant galaxies.

Features of the Optolong OIII 18nm Filter 1.25"

The Optolong OIII 18nm Filter is packed with features tailored for the enthusiastic astronomer:

• Optical Precision: The substrate of the filter is fine-optically polished to 1/4 wave and maintains less than 30 seconds of parallelism across both surfaces, ensuring supreme clarity and focus.
• Exceptional Surface Quality: Adhering to the stringent MIL-O-13830 standard, the filter boasts a 60/40 surface quality rating, guaranteeing minimal optical imperfections.
• High Transmission Rates: Optimized for specific wavelengths, it offers 90% transmission at 495.9 nm and 500.7 nm, critical for viewing ionized oxygen in nebular regions.
• Ultra-Low Transmission for Unwanted Wavelengths: The filter significantly cuts out unwanted light with only 0.1% transmission at certain wavelengths, further clarifying your celestial observations.

Applications of the Optolong OIII 1.25" Filter

Designed for versatility, this filter finds its place in a variety of observational settings:

• Deep Sky Viewing: Enhances the contrast of emission nebulae against the sky background, making it perfect for deep-sky objects.
• Astrophotography: A vital tool for photographers aiming to capture detailed and crisp images of nebulae and other astronomical phenomena.

Benefits of Using the Optolong OIII 1.25" 18nm Filter

Investing in this filter brings numerous benefits:

• Improved Visibility: By selectively filtering out specific wavelengths of light, it enhances the visibility of targeted celestial objects.
• Reduced Light Pollution: The filter effectively cuts through the clutter of urban lighting, providing clearer and more detailed views.
• Quality Construction: Built to last, its durable design and precise optical alignment offer reliability and stellar performance.

What is the Optolong OIII 18nm Filter Used For?

This filter is specifically designed to improve the observation and photography of gaseous nebulae by filtering out light wavelengths that typically wash out images, such as those from streetlights and other urban sources.

Usage Guidelines for the Optolong OIII 18nm Filter 1.25"

Using the filter is straightforward:

1. Install on Eyepiece: Simply attach it to your 1.25-inch eyepiece.
2. Align Telescope: Ensure your telescope is correctly aligned and focused for the best results.
3. Adjust as Needed: Depending on your location and the objects you're observing, you may need to adjust your settings.

Tips for Maximizing the Performance of Your Optolong OIII 18nm Filter

• Choose Darker Locations: Even with the filter, choosing a viewing spot away from urban lights can improve results.
• Regular Cleaning: Keep the filter clean and free from dust to maintain optimal performance.
• Experiment with Settings: Different telescopes and eyepieces might require adjustments to get the best out of your filter.

Frequently Asked Questions

1. How does the filter attach to my telescope?

   • The filter threads directly onto the 1.25-inch eyepieces.

2. Can I use the filter for general viewing?

   • While it's optimized for nebulae, it can enhance general stargazing under certain conditions.

3. Is this filter suitable for beginner astronomers?

   • Absolutely, it is designed to be user-friendly and effective for all levels of astronomy enthusiasts.

Why Should You Buy the Optolong OIII 18nm Filter 1.25"?

Choosing this filter means opting for quality and clarity in your astronomical pursuits. Its precise construction and ability to reduce light pollution make it an invaluable addition to your astronomy gear.

Understanding the Technology Behind the Optolong OIII 18nm Filter

The technology that powers the Optolong OIII 18nm Filter is rooted in a deep understanding of optical science and the specific needs of astronomers. By focusing on the transmission of light at the 495.9 nm and 500.7 nm wavelengths—key lines emitted by ionized oxygen in nebulae—this filter allows you to see details that are otherwise obscured by broader spectrum filters.

Why the Specificity of 18nm Bandwidth Matters

The choice of an 18nm bandwidth is no accident. This specificity ensures that the filter is narrow enough to block a significant amount of light pollution while still allowing through the critical wavelengths that highlight the features of emission nebulae. It strikes the perfect balance between contrast and brightness, making it ideal for both visual observation and astrophotography.

Building on a Foundation of Quality: The Optolong Advantage

Optolong's commitment to quality is evident in every aspect of their filters. From the use of finely polished substrates that ensure clarity and light transmission to the rigorous standards that govern surface quality, every filter is a testament to Optolong's dedication to providing astronomers with the best possible tools for exploring the night sky.

Customizing Your Astronomical Experience

The versatility of the Optolong OIII 18nm Filter allows you to customize your astronomical observations. Whether you're interested in detailed views of specific nebulae or general observations of the night sky, this filter can be adapted to meet your needs. Its compatibility with 1.25-inch eyepieces makes it a flexible choice for many telescopes.

Specifications of the Optolong 1.25" OIII 18nm Filter

• Filter Type: OIII 18nm
• Compatible Eyepiece Size: 1.25 inches
• Transmission: 90% at optimal wavelengths
• Surface Quality: 60/40 as per MIL-O-13830
• Physical Size: Thin metal cell with a clear aperture of 26mm

Package Content

Each Optolong OIII 18nm Filter comes with:

• 1.25" OIII 18nm Filter
• Protective Plastic Case with EVA Lining

Order Now

Ready to transform your night sky observations? Order your Optolong OIII 18nm Filter today and see the universe in a new light! Join thousands of satisfied astronomers who have taken their stargazing to the next level. Don't wait—unlock the secrets of the cosmos with precision and clarity!