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Worked great Starlight Holographic attachment for Howie Glatter
Overall, this did the trick, I was able to successfully collimate my 304mm Ritchey Chretien astrograph successfully!
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SKU : SI-HOLA-CIRCLE-NV
Product Details
The Self-Barlow attachment is a disc with a white screen on the front and a small built-in Barlow lens in the center of the disc. It is then screwed into the Howie Glatter laser collimator (sold separately) aperture and provides a highly compact method for Barlow-collimating.
This pattern is recommended for general use because it can be used with the fastest telescopes likely to be encountered.
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Overall, this did the trick, I was able to successfully collimate my 304mm Ritchey Chretien astrograph successfully!
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