First tracked astrophoto : M42 - Orion Nebula

Sony A77III+Sigma 135mm F1.8 at Bonnie Springs Ranch near Las Vegas. 2x30 seconds (ISO100+ISO640), on astrotracker StarAdventurer (it rotates camera against Earth rotation). Orion Nebula is one of the few deep space objects with brightness range so wide that HDR processing is required.

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March 31, 2019