ZWO ASI 1600 MM Pro strange electronics behaviour

MatejZigo

We are experiencing strange behaviour of two ASI1600 MM Pro cameras. Both are installed on different locations and on different types of telescopes - one is an imaging camera and second one serves as spectral camera.

For the imaging camera it seams that the read out is not working properly as also in case of no light we are getting horizontal lines or perpendicular structures on the images (see bellow the figure)

Second (the spectral camera) is showing recording strange very intensive pixels already when iluminated by the calibration lamp for flat acquisitions (see figures bellow).

Both cameras are operated using SharpCap software, cooled to approximately -15 degrees and plug via USB2.0 to the computer. There was no firmware update since 2023 and cameras worked well.

Did somebody experienced similar behaviour? Can this be caused by firmware of the camera or it is HW issue of the electronics?

Thank you for any thought!

MatejZigo

for the spectral camera current conclusion is that the features are caused by the frosting of the camera window, as the humidity and day/night temperature differences are in this part of the year very high.