This $250 electronic lens adapter is perfect for Nikon Z-mount curious Sony shooters — shhh, we won’t tell anyone.
The Astrotracer (O-GPS1) works well with a 300mm lens :)
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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