best deal Spike-a Bahtinov Mask - 11 inch
Amazon: Customer Reviews: Spike-a Bahtinov Mask - 16 inch 5 stars. "Expensive, but good" I use these for focusing my 14" Meade LX-200 ACF telescope when setting up to do imaging. To use the product, point the telescope at a
Set up your telescope and imaging equipment as normal. Then simply locate a bright star (maybe Spica?) with your telescope, attach the Spike-a Bahtinov mask to your telescope and watch the diffraction spike pattern around the star as you adjust the focus. When the middle diffraction spike is centered in the outer spikes, you're in focus. Very little focusing travel is required to move the inner diffraction spike, which means the focus is extremely accurate. The Spike-a Bahtinov mask is made from quality light weight aluminum and machined with precision tools, then anodized black to eliminate l
Spike-a Bahtinov Mask - 11 inch
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Spike-a Bahtinov Mask - 11 inch Features :
- Perfect focusing for your CCD, DSLR or Webcam in seconds
- Visual feedback allows almost instant focusing
- Works with all imagers
- High quality lightweight aluminum, anodized black
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