A recently-issued patent shows that OM System has designed a star-tracking function that combines IBIS and optical image stabilization, and it looks like an extreme version of what is currently available in Pentax DSLRs.
OM System applied for the patent in early 2019, although it was only issued in Japan on July 6, 2023., OM System explains that because the Earth rotates, stars in the night sky appear as star trails when doing long-exposure photography, and extended shutter speeds are often required at night. The North Pole Star, Polaris, which is actually a triple star system despite its appearance as a single point, remains practically stationary in the night sky when shooting the northern sky.
In this schematic, item 21 is a GPS unit, which is required for calibrating a star tracking system like this. Credit: OM System patent filing , photographers can capture images with longer exposure times while maintaining tack-sharp stars. To achieve this feat, the star tracker aligns a user’s camera with Polaris and then moves at the appropriate pace to compensate for the Earth’s rotation.
OM’s patent explains how it could use an OM System camera’s IBIS and an M.Zuiko lens’ OIS to move the image sensor and lens to establish concordance between the image plane and the rotating Earth, resulting in sharper images of the night sky at longer shutter speeds.notes that while the patent is exciting and showcases extreme movement to compensate for Earth’s rotation, astrophotography typically demands fast-aperture lenses. A cursory glance at OM System’s M.
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