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Fun with Astrotracer: Pentax SLR Talk Forum: Digital Photography Review
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Pentax Astrotracer Guide - 2021 Edition: What it is and How to Use it - MilkyWayPhotographers.com
The Astrotracer (O-GPS1) works well with a 300mm lens :): Pentax SLR Talk Forum: Digital Photography Review
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PENTAX: The choice for astrophotography / explore | RICOH IMAGING
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PENTAX: The choice for astrophotography / explore | RICOH IMAGING
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