JUST A NOTE TO ANYONE ELSE CONSIDERING THIS CAMERA FOR STAR TRAIL WORK, don't use it. The K1 suffers from the same darn issue the D810 had when it was announced, net millions of white dots throughout the image. Yes, if you turn on in camera long exposure noise reduction, you can eliminate most of them, but for star trails, (not Milky Way) this is total bust as you can't use long exposure noise reduction for stacking as you will gap excessively. I realize most folks don't do star trail work anymore, but I love it still and had hoped that Pentax would have done a bit of homework on this issue from Nikon's experience, as the cameras are using the same damn chip. Oh well.
The only way I know to get around it is with C1 as single pixel noise reduction most times will get a lot of them out, but that limits you to only one tool for work, and there are many times I get a better solution with LR and LR can't begin to handle this issue as shown below.