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Laser spot is centered on Primary mirror small central circle. Colour is white due to over-exposure image.
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Primary mirror central spot
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Laser spot should fall into collimator central hole
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GSO collimator OFF
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Laser Red spot falls into central hole. Telescope is apparently collimated but not 100% as shown on next picture.
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GSO collimator ON
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1.25" Blug shows dark oval slighty displaced to the right. It will need 1/8 primary knob turn to correct it.
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Howie Glatter Blug
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Now dark oval is centered. Next picture Collimator rings are also centered.
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Howie Glatter Blug
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Rings are now concentric and centered. Telescope is collimated now.
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Collimator rings
