Pentax Australia - Shot on Pentax K1 + Pentax-DFA 15-30mm F/2.8 ED SDM WR (foreground) + HD Pentax-D FA* 50mm F1.4 SDM AW (with astrotracer function tracking Stars) . @aaron_martinez_photography, at the
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Amazon.com : Pentax GPS Unit O-GPS1 Hotshoe Mounted Accessory GPS Unit for Pentax K-5, K-r, 645D : Flash Shoe Mounts : Electronics
Re: Pentax K70 /w Astrotracer vs compact trackers: Astrophotography Talk Forum Forum: Digital Photography Review
PENTAX K-1 ASTRO TRACER - YouTube
DSLR Astophotography: Astrotracer Images with Pentax GPS Unit O-GPS1
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The Astrotracer (O-GPS1) works well with a 300mm lens :): Pentax SLR Talk Forum: Digital Photography Review
ASTROTRACER | GPS UNIT O-GPS1 | RICOH IMAGING
Pentax K-1 Astrotracer and Milky Way in Ethiopia: Astrophotography Talk Forum Forum: Digital Photography Review