GPS function Compatible with PENTAX K-r, K-5 & 645D Astrotracer Simple navigation Weather-resistant Simply by mounting the O-GPS1 onto the hotshoe of a PENTAX digital SLR camera, * the user can record the latitude, longitude, altitude, universal time coordinated (UTC) & aspect of shooting locations onto captured images. Image files carrying GPS location data, can be used to track shooting locations & review location data on a PC. GPS location data stored on such files also makes it much easier to sort & file recorded images. By coupling GPS data with the camera’s SR (Shake Reduction) system, the unit offers a range of unique, advanced applications, including ASTROTRACER, Simple Navigation & Electronic Compass. GPS function for effortless recording of shooting location data The O-GPS1 mounts on the hotshoe of a compatible camera & records the latitude, longitude, altitude, universal time coordinated (UTC) & direction of the shooting location onto captured images. Using mapping software such as Google Earth™, the user can easily recall shooting locations & directions on a map. This function is very helpful later in sorting & filing the recorded images. Note: When the O-GPS1 is used in locations where it cannot receive signals from GPS satellites, location data may be in error or missing. ASTROTRACER for effortless astronomical photography When mounted on the PENTAX K-5 or K-r camera body, the O-GPS1 also offers the advanced ASTROTRACER function, ** which couples the unit with the camera’s SR (Shake Reduction) system for the effortless tracking & photographing of celestial bodies. The unit calculates the movement of stars, planets, & other bodies using the latitude obtained from GPS data & the camera’s alignment data (horizontal & vertical inclinations & aspect) obtained from its magnetic & acceleration sensors, then shifts the camera’s image sensor in synchronization with the movement of the objects.*** As the result, stars & other bodies are captured as solid points rather than blurry streaks, even during extended exposures. It also makes astronomical photography much simpler, as it requires only a tripod & eliminates the need for an additional accessory 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. Simple Navigation to indicate location data to a destination The O-GPS1 offers a Simple Navigation function, which calculates the direction & distance to a given destination from the current position. The user can either locate destinations using location data stored on recorded images, or register and/or assign them by uploading location data created on a PC.**** **** At the time of purchase, the O-GPS1 has nine PENTAX international service centres as pre-set destinations. Electronic Compass function to indicate & record direction The O-GPS1 comes equipped with an Electronic Compass function, which displays the camera’s direction on its LCD monitor with great precision. Using the aspect of geomagnetism detected by its magnetic sensor & GPS location data, the unit indicates the aspect in relation to true north. The user can also record directional data on captured images.