ASI1600MM-C Very fine horizontal bars after integration

bobt

ASI1600MM-C, High Dynamic Range gain and offset, 82 60 second exposures, -15c, master bias (100 subframes), master dark (120 subframes), flats (50 subframes), PI SubframeSelector, BPP, StarAlignment, and ImageIntegration.

Close inspection of all images prior to ImageIntegration reveals no horizonal barring. The attachment shows the barring after integration.

Screen Shot 04-28-17 at 12.41 PM.PNG

Reading some previous posts concerning horizontal bars suggests switching to USB2 and possible power supply problems. I'll investigate both of these tonight (if this stinking weather holds out) but thought I would ask if anyone has any other suggestions.

Thanks,

BobT

bobt

I had a chance to do some testing last night: new cooler power supply, reduce usb3 transfer speed, and run on usb2.

The new power supply made no difference but the horizontal banding disappeared when I reduced the usb3 transfer rate to minimum or switched to usb2.

BobT

Support@ZWO

Hello BobT, I saw you fix this problem by yourself. Congratulations.