I have an St-i mono which I use as a guide camera (connected to STF-8300/FW5/OAG). I have been using it successfully for 1-2 years. Last night after exposing a frame (3 sec) to select a guide star, I got something similar to the attached result (this shot was taken during the day with lens cap on). I disconnected/reconnected several times, also changed out the USB cable but got a similar result each time. The camera connects properly (using Maxim DL) and drivers seem OK. Any thoughts or suggestions would be appreciated. Bill
Bill, try CCDOPs and http://www.diffractionlimited.com/f...sbig-ccd-camera-using-ccdops-application.600/ to check EEPROM content of your camera. The EEPROM inside my ST-i is sometimes randomly rewritten too. Otherwise this can be HW problem. Jan