ASTROTRACER:For effortless tracing of celestial bodies
When mounted on the PENTAX K-5 or K-r camera body, the O-GPS1 provides the advanced ASTROTRACER function, which couples the unit with the camera's SR (Shake Reduction) system for the effortless tracing and photographing of celestial bodies. The unit calculates the movement of stars and other objects using the latitude obtained from GPS data and the camera's alignment data (horizontal and vertical inclinations and direction) obtained from the unit's magnetic and acceleration sensors. It then shifts the camera's image sensor in synchronization with the movement of these objects. This means that all celestial bodies are captured as solid points rather than blurry streaks, even during extended exposures. It also simplifies the astronomical photography setup, since it requires only a tripod and eliminates the need for an additional accessory such as an equatorial telescope.
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645Z | - | 645D | - | K-3 Mark III | ○ | KP | ○ | K-3 | ○ |
|---|---|---|---|---|---|---|---|---|---|---|
| K-5II | ○ | K-5IIs | ○ | K-5 | ○ | K-S2 | ○ | K-S1 | ○ | |
| K-70 | ○ | K-50 | ○ | K-30 | ○ | K-r | ○ | K-01 | - |
Simplified equatorial telescope function, developed using PENTAX-exclusive technologies
In order to keep accurate track of celestial bodies, the O-GPS1 provides a simplified equatorial telescope function that shifts the camera's SR (Shake Reduction) unit in all directions.
Since this advanced function simplifies astronomical photography by automatically tracing celestial bodies using the camera fixed on a tripod, astronomical photographers of all levels — from the inexperienced to the most dedicated — can capture beautiful night skies with great ease.
High-precision tracing of celestial bodies by factoring the camera and O-GPS1's alignment into calculation
Sample images
Set 1 (taken in Itabashi, Tokyo)
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Image taken by fixed-point shooting
Equipment : K-5 camera with DA 200mm F2.8 lens
Settings : ISO2000, 20 seconds, F3.5 DA 200mm F2.8 -
Image taken with ASTROTRACER
Equipment : K-5 camera with DA200mm F2.8 lens
Settings : ISO 2000, 20 seconds, F3.5 DA 200mm F2.8
Set 2 (taken in Chichibu, Saitama)
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Image taken by fixed-point shooting
Equipment : K-5 camera with DA 40mm F2.8 Limited lens
Settings : ISO 800, 300 seconds, F6.3 DA40mm F2.8 Limited -
Image taken with ASTROTRACER
Equipment : K-5 camera with DA 40mm F2.8 Limited lens
Settings : ISO 800, 300 seconds, F6.3 DA40mm F2.8 Limited
Set 3 (taken in Chichibu, Saitama)
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Image taken by fixed-point shooting
Equipment : K-5 camera with DA 16-50mm F2.8 lens
Settings : ISO 1600, 118 seconds, F4, 24mm F4/DA 16-50mm F2.8(24mm) -
Image taken with ASTROTRACER
Equipment : K-5 camera with DA 16-50mm F2.8 lens
Settings : ISO 1600, 120 seconds, F4, 24mm F4/DA 16-50mm F2.8(24mm)
Set 4 (taken in Chichibu, Saitama)
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Image taken by fixed-point shooting
Equipment : K-5 camera with DA 16mm F2.8 lens
Settings : ISO 1600, 118 seconds, F4, 24mm F4/DA 16-50mm F2.8（24mm） -
Image taken with ASTROTRACER
Equipment : K-5 camera with DA 16mm F2.8 lens
Settings : ISO 1600, 120 seconds, F4, 24mm F4/DA 16-50mm F2.8（24mm）
