On Wed, 13 Mar 2019 18:15:40 -0700 (PDT), RichA
wrote:

Pentax has this feature in some of their DSLRs. The sensor utilizes it's IBIS (internal vibration stabilization) mode of the sensor, but the motion tracks the sky. So, all you have to do is put the camera on a tripod, point it at the sky, and shoot. No separate tracking platform needed. Of course, it has limitations, but it seems like a very nice option in a camera.

https://www.lonelyspeck.com/wp-conte...y-way-0193.jpg

The camera used here was a full-frame costing about $2000.00, but they have inexpensive APS sensor models that have or can have added the feature.

https://www.lonelyspeck.com/pentax-k...graphy-review/

It's unclear how useful this is. If you're shifting the sky, you're
blurring the foreground. So you need multiple exposures and post
processing. For a high resolution camera, image rotation will still
show up in many parts of the sky, which will produce streaking. And
the system is just building an image inside the camera using shorter
exposures... something that you could do manually outside the camera
while maintaining more control.