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Forum: Pentax K-5 & K-5 II
01-24-2013, 06:22 PM
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Coming in an article in the March 2013 issue of Sky and Telescope magazine.
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Forum: Pentax K-5 & K-5 II
06-12-2011, 03:57 PM
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I have heard those are junk. Give this a thought. Astrotrac I have heard lots of good things about this one.
That's where I am at.
Also:
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Forum: Pentax K-5 & K-5 II
06-09-2011, 05:45 PM
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Forum: Pentax K-5 & K-5 II
06-07-2011, 09:03 AM
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 Quote: Astrotracer for astrophotography
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.
* This function is available only when the O-GPS1 is mounted on a PENTAX digital SLR camera body equipped with a magnet-driven SR system.
** The duration of Astrotracer operation may vary depending on photographic conditions. How far could it possibly shift? 2 minutes worth on the South views?
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Forum: Pentax K-5 & K-5 II
05-26-2011, 03:10 PM
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I think it does excellent even in single captures like on the Zodiacal light.
F/4, ISO 3200, 65 seconds.
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