William Optics Bahtinov mask cover for Z61 telescope, red (SKU: CPBM-61RD)

William Optics objective cover with Bahtinov mask for Z61, red (William Optics, SKU: CPBM-61RD) is an objective cover with an integrated Bahtinov mask, designed for the ZenithStar 61 telescope. The mask’s diffraction pattern helps assess focus in a star image.

Key features

• mask for checking focus on a star
• dedicated fit for the Z61 model

Included items

• objective cover with Bahtinov mask for the Z61

Technical specifications

• type: cover with Bahtinov mask
• compatible telescope: William Optics ZenithStar 61
• manufacturer’s version: 61, for Z61 only
• colour: red

The mask in the cover makes precise focusing easier before imaging begins.