For production stills etc.
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Dynamic Perception stage zero dolly with Orion head
The night time astro timelapse are shot with Canon DSLR’s. The timelapses shot since Sub Zero were shot in RAW full size format. RAW allows for more adjustments in post. Most shots go from 20-30+ seconds per frame, with three second intervals and run continuous for 3+ hours. Most of the shots utilize Dynamic Perceptions Stage Zero Dolly for the motion, see photos below. An Orion head (aka Merlin or Celestron) can also be mounted on the dolly, for a slide move with panning or tilting.
Most of the timelapse is shot at night. If it looks like the sun setting or rising, it is actually the moon.
For dew and frost prevention, I use hand warmers held on with a rubber band.
I also cover the camera with a plastic rain coat, and recently started using Storm Jacket covers, which are a much better method. In extreme cold, it is best to let the camera warm up gradually, by covering it with a heavy coat, inside a cold cooler, etc. before bringing it inside. This will help prevent condensation on and more importantly inside the camera and lens.