Fixed Diameter 50mm to 225mm Aluminum Alloy Solar Filter Sun Film

Key Benefits

• 5.0 optical density blocks 99.999% of solar radiation, enabling safe solar observation
• High-density dual-side coating prevents streaks, blisters, and pinholes for consistent image quality
• Neutral white color transmission preserves true solar appearance without artificial tint
• Aluminum alloy border provides rigidity and durability during installation and use
• Fits telescope hoods with outer diameters from 50mm to 225mm, covering a range of common aperture sizes
• Screw and rubber fixation system allows secure mounting without requiring custom tools

Application Scenarios

• Solar observation during daytime astronomy sessions with a refractor or reflector telescope
• Educational demonstrations of sunspots, solar flares, and solar surface features
• Photographic setup for solar imaging using a telescope with a front-mounted filter
• Amateur astronomy clubs conducting safe solar viewing events
• Telescope users needing a reliable, low-maintenance filter for regular solar inspection

Who It Is For

• Amateur astronomers conducting safe solar viewing
• Educational institutions teaching solar astronomy and optics
• Telescope users requiring a front-mounted solar filter for visual or imaging use
• Astronomy clubs organizing public solar observation events
• Retailers and resellers of astronomy accessories supplying safe solar filters

Problems It Solves

• Risk of permanent eye damage from observing the Sun without a properly rated solar filter
• Inaccurate or tinted solar images from low-quality filters that introduce blue or orange casts
• Pinholes or streaks in filters that compromise image clarity and safety
• Mismatch between filter size and telescope hood due to confusion between inner and outer diameter
• Lack of secure mounting options that can withstand thermal expansion and vibration

Technical Features

• 5.0 optical density blocks 99.999% of solar radiation
• Dual-side high-density coating prevents streaks, blisters, and pinholes
• Neutral white color transmission preserves true solar appearance
• Aluminum alloy border provides structural stability and heat resistance
• Screw and rubber fixation system allows secure attachment to telescope hoods
• Designed for use on telescope hoods with outer diameters from 50mm to 225mm
• Compatible with telescopes having apertures from 70mm to 152mm
• Installation tolerance allows for ±5mm deviation in actual fit

Specifications

Specifications are taken from the AMADA product data for this item. Confirm critical dimensions with us in writing before ordering.

Customization Options

• Available in nine size variants based on outer diameter and through aperture
• Can be supplied with or without screws and rubber gaskets depending on customer request
• No custom optical density or coating color options available
• No custom material or thickness changes permitted

Comparison With Other Options

Use Guide

• Measure the outer diameter of your telescope hood before purchasing; the size listed on the telescope is the inner diameter
• Confirm that your telescope's aperture falls within 70mm to 152mm for proper fit
• Install the filter using the provided screws and rubber gaskets, ensuring even pressure across the border
• Check for any gaps or misalignment after installation; the ±5mm tolerance allows for minor fit variation
• Never use the filter if it shows signs of damage, blistering, or coating failure
• Remove the filter when not in use to prevent heat buildup and material degradation