star tracker

Has anyone figured out a speed to use in panning to work with the movement in the stars? A star tracker can be purchased for a couple hundred dollars, but I thought the Axis360 moves SO slow, that it might be possible by putting it in low and a certain ramp speed. That way, you could do a long milky way exposure and have the stars be tack sharp instead of trails if your camera is moving at the same speed. Tricky but possible.

Comments

  • edited May 2016
    Earth spins about 360° in 24 hours, 15° per hour.
    This is a 4 hour, 60° lapse...





    Hope that helps!
  • So if you programmed the bulb for a 4 min photo at 1 degree rotation on continuous you should have a crisp photograph without trails.
  • Justin is right in the case of an equatorial type mount. This is where the rotation axis (of the Axis360) is pointed straight at the North Star, with the camera pointed at some angle away from the North star (this is how older telescopes are designed). However if you use a tripod type mount the angular speed of an object over time will depend on how close or far it is from the North star. Imagine the Earth spinning, if you stand closer to the North pole you will travel slower over 1 day, compared to if you were standing on the equator. This is the same concept but applied to the sky.

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