Filtered objective filter for observing the sun. It offers more natural colors and better contrast than solar foils, and is much more durable. The filter lets only a small fraction of the incident beam, ensuring safe observation. It is impervious to infrared (IR) and ultraviolet (UV).

The filter holder is made of aluminum.

Technical specifications

• Size: 4.10 inches
• range of matching diameters (outer tube size): 98 mm - 104 mm
• fits, among others, Orion StarMax90, Apex 90, Meade ETX-90, SkyWatcher Mak 90
• outer diameter: 110 mm
• weight: 125 g