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One day period with the Stage R?

I'm looking at getting the Stage R with a motor and MX3 controller. My question is related to the choice of motor. I want to hit a rate of one revolution per day (15 degrees per hour)

The intention would be to either track the Milky Way or Sun for a full-day/night timelapse.

Is the 3 rpm motor capable of this slow of moves or is the 1 rpm a better choice?

Ian Norman

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Hi Ian,

That would be possible with both the 1 or the 3 rpm motor. The 1 may be the better choice simply because it would have a higher gear ratio and thus will have more resolution for extremely small moves (if you are looking to get many many shots over the course of an hour). In other words it's not necessarily 'slowness' your looking for here it's how many slices you want to divide that 15 degrees/hour. If for example you were taking a shot per minute and thus dividing that 15 degrees in 60 shots then you'll be fine with the 3 or the 1 because your only asking for .25 degrees per shot which is well within reason. On the other hand if you wanted say 300 shots per hour or .05 degrees per hour the 1 rpm motor would perform this slightly better than the 3 again because of the high gear ratio and thus higher resolution that it can achieve. In any case what your asking for is easily achieved with our system..

Jay Burlage
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Awesome. Thanks for your answer! Sounds like the 1rpm is perfect for me. Is there a step up or down from motor to mounting plate or is the Stage R a 1:1 ratio on the belt?

Ian Norman 0 votes
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I believe your asking the ratio between the motor output shaft and mounting wheel which is 1:3 (it's exactly 1:3.06)

Jay Burlage 0 votes
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The tracking rate you want for the Milky Way is not actually 15 degrees per hour. The Earth makes one full rotation in 23.93447 hours, not 24 hours. Depending on the resolution of your images this may or may not matter to you.

William Phelps 0 votes
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Haha, I think 15 degrees per hour will probably be close enough. For more precise tracking, I guess we will have to shoot for 15.041068 degrees per hour!

Ian Norman 0 votes
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