because of the heat, my meade dsi has several hot pixels
and the internal guide always tries to follow a defective pixel and returns an error
using a dark does not solve, only the "median" effect works
it would be useful to say not to use small stars less than half a millimeter
Celestron C8 Fastar XLT U.S.A. (Carbon tube), seeker 9x50 (used as a guide scope), Wedge, Meade DSI (used as a guide cam), Canon EOS 500D Full mod, Canon EOS 1000D, RaspBerryPI3 with remote management through EKOS.