Meade Bahtinov Focusing Mask - 12"
- Fits Telescope Diameters of 290 mm to 350 mm
- Compatible With All 12" Telescopes
- Included Hardware: Three (3) Sets of Thumbscrews with Rubber-Coated Retaining Nuts for Diameter Adjustment
- Made from Durable ABS Plastic
Meade Bahtinov Focusing Mask 12" lets you perform a precise focusing adjustment or check your focus in a quick, easy, and positive way. This Bahtinov Focusing Mask is compatible with all 12" telescope models.
Accurate focusing of your telescope is critical to performing astrophotography. A Bahtinov mask is used to focus your telescope with accuracy and very quickly to save you time. Point your scope at a bright star, track it, place the Bahtinov Focusing Mask on your objective and check your focus visually. The mask produces three separate angled diffraction spikes in the image plane. Adjust your focus until the middle spike is well-centered between the other two spikes. You now have set the optimum focus for your instrument. It is just that easy!
|Assembled Product Dimensions:||13.9" x 13.9" x .07"|
|Product Metric Dimensions:||353 mm x 353 mm x 2 mm|