The Astrotracer (O-GPS1) works well with a 300mm lens :)

Started Oct 23, 2014 | Discussions thread
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stephp Forum Member • Posts: 61
The Astrotracer (O-GPS1) works well with a 300mm lens :)
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Those images were taken during my first attempt to use the astrotracer with my Sigma AF 300/2.8

Messier 31 - 15 images stacked with dss - 300s total - F=300.0mm - f/2.8 - ISO: 1600

Messier 45 - 32 images stacked with dss - 640sec. total - F=300mm - f/2.8 - ISO: 1600

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 stephp's gear list:stephp's gear list
Pentax K-5 IIs Pentax K-3 Pentax smc FA 50mm F1.4 Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM Pentax smc DA* 50-135mm F2.8 ED (IF) SDM +9 more
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