ASI1600mm Pro Sporadic Slow Downloads?


My downloads are typically 1-2s (tested on usb2 and usb3).

In an attempt to reduce my interframe delay due to short exposures I have switched to usb 3 and most downloads are very fast, but occasionally it appears to hang for a considerable time. The log file shows the following:
[02/27/19 21:30:33.556][DEBUG] [MF Update Thread] Performing serialize…
[02/27/19 21:31:02.289][DEBUG] [Sequence Thread] EventMarker 15 - t:m81 (1); e:3; f:8; o:
[02/27/19 21:31:02.294][DEBUG] [Sequence Thread] Waking from exposure time sleep period…
[02/27/19 21:31:02.294][DEBUG] [Sequence Thread] Checking to see if the CCD has a temp…
[02/27/19 21:31:02.294][DEBUG] [Sequence Thread] Saving the CCD temp…
[02/27/19 21:31:02.304][DEBUG] [Sequence Thread] Entering super dangerous loop to await image completion…
[02/27/19 21:31:02.308][DEBUG] [Sequence Thread] EventMarker 16 - t:m81 (1); e:3; f:8; o:
[02/27/19 21:32:35.153][DEBUG] [Camera Thread] SGM_CAMERA_CAPTURE complete…
[02/27/19 21:32:35.435][DEBUG] [Sequence Thread] EventMarker 17 - t:m81 (1); e:3; f:8; o:
[02/27/19 21:32:35.435][DEBUG] [Sequence Thread] Image reported as complete. Continuing…
[02/27/19 21:32:35.435][DEBUG] [Sequence Thread] Collecting FITs headers…
[02/27/19 21:32:35.436][DEBUG] [Sequence Thread] ASCOM Camera: Could not get last exposure start time. Reported as (unknown)

The super dangerous section appears to be taking approx 90s?

Any idea what is happening and how to rectify?


Log file part 1sg_logfile_20190227200727 - Part 1.txt (722.7 KB)


Log file part 2sg_logfile_20190227200727 - Part 2.txt (823.7 KB)


I’m not completely sure. Best guess is that the camera delayed capturing the image or didn’t report that it was complete until another 90 seconds.

The “Super Dangerous Loop” is really just checking for the camera to report that it is complete. So it sits there until the camera says it’d done.



Thanks, it ran for 3 hours last night without repeat so will see if it reoccurs.