--- On Thu, 6/2/11, mike wilson <m.9.wil...@ntlworld.com> wrote: > The astrotracer function is rather whizzy. > > "The O-GPS1offers the advanced PENTAX original Astrotracer > function,* which works with the PENTAX Shake Reduction > (SR) system on select cameras for tracking and photographing > celestial bodies. The unit calculates the movement of stars, > planets, and other bodies using the latitude obtained from > GPS data and the camera’s alignment data (horizontal and > vertical inclinations and aspect) obtained from its magnetic > and acceleration sensors. Then, the unit shifts the > camera’s image sensor in synchronization with the movement > of the object(s).** As a result, stars and other bodies are > captured as solid points rather than blurry streaks, even > during extended exposures. The unit also simplifies > astrophotography by requiring only a tripod and eliminating > the need for additional accessories such as an equatorial > telescope." >
If they allow one to switch off the dark-frame subtraction for long exposures, it might even be practical. Rick http://photo.net/photos/RickW -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
