Omegon Dust cap for 150 mm OTA (Optical Tube Assembly)

Omegon Dust Cap for 150mm OTA (Optical Tube): seals the opening when the tube is not in use

In a reflecting telescope, the primary mirror is at the bottom of the tube, with the opening as the only way out. Anything that enters through that opening will eventually hit the mirror. Dust can be blown away, but cleaning a mirror is work you'd rather not do, and it doesn't do the coating any favors.

This cover seals the opening once you are finished observing. This keeps the inside of the tube clean and you need to touch the optics much less often.

Features

• Fits a 6-inch (150 mm) pipe opening
• Plastic version
• Grip ribs on the side for hold with gloves
• Slides over the tube and sits firmly in place
• Suitable for storage and transport

Compatibility

Suitable for 6-inch Newtonian tubes such as the Omegon Advanced 150/750 and the ProNewton 153/750. If in doubt, measure the outer diameter of your tube, as this differs from the mirror's aperture: an 8-inch Newtonian typically has an outer diameter around 235 mm.

Specifications

You can find more maintenance articles for this merk on the Omegon merk Page.