Hi all. I was trying out my myfocusser2 driver with my canon dslr camera. I focussed as best i could and established the best focus position and HFR value. The HFR was a lousy 3.22 but this was the best focus i could get. I then backed out the foccuser in steps of 100 to try and get a step position with a HFR value of 3-5 times this initial value so i could work out the step size. However, the HFR value stated “NA” and no stars were found. The image was blurred but i could see blobby stars. I estimated the step size and keyed it in based on the step size i use with a different camera but same scope. I then tried to do an autofocus run. Instead of getting a nice ‘V’, the autofocus run went into a loop with the focusser going in until it got to 0 and the run repeating - going from back out and the run going from 100% to 111% to 122% and on until i stopped it. The curve was like a double ‘W’ with the first three steps of a similar HFR value. It was supposed to stop after 9 steps but went on and on. I repeated this using a variety of different step sizes withe the same result each time.
I have copied a sample of the SGP log below. I am thinking that the images taken were using too high a ISO or exposure but i am only guessing. Any ideas?
[02/24/19 21:57:01.870][DEBUG] [Camera Thread] Display image preview using asynch task…
[02/24/19 21:57:02.392][DEBUG] [Main Thread] --> Find stars (normal)
[02/24/19 21:57:02.492][DEBUG] [Main Thread] AF frame was too large… downsample = 0.25…
[02/24/19 21:57:03.059][DEBUG] [Main Thread] Star detection using min star size of 2px…
[02/24/19 21:57:03.059][DEBUG] [Main Thread] Star detection using max star size of 40px…
[02/24/19 21:57:03.077][DEBUG] [Main Thread] Find stars took: 685 ms…
[02/24/19 21:57:03.662][DEBUG] [Camera Thread] Auto focus HFR calculated at: 0.00
[02/24/19 21:57:04.665][DEBUG] [Camera Thread] HFR value from auto focuser is 0!, trying again…
[02/24/19 21:57:04.665][DEBUG] [Camera Thread] HFR value was 0 three times… probably not going to get anything else, continuing…
[02/24/19 21:57:04.678][DEBUG] [Camera Thread] Moving focuser to next position (1540)…
[02/24/19 21:57:04.679][DEBUG] [Focuser Move Thread] Focuser moving to 1540
[02/24/19 21:57:04.695][DEBUG] [Focuser Move Thread] Focuser move call complete
[02/24/19 21:57:05.717][DEBUG] [Focuser Move Thread] MoveFocuserAbsBlocking: Focuser position 1540 matches requested position 1540
[02/24/19 21:57:05.717][DEBUG] [Focuser Move Thread] MoveFocuserAbsBlocking: Waiting for focuser to report done…
[02/24/19 21:57:06.718][DEBUG] [Focuser Move Thread] MoveFocuserAbsBlocking: Focuser reports it is done moving, continuing…
[02/24/19 21:57:06.718][DEBUG] [Camera Thread] Focuser move complete…
[02/24/19 21:57:06.741][DEBUG] [Camera Thread] Focuser position matches requested position (1540), continuing…
[02/24/19 21:57:06.741][DEBUG] [Camera Thread] Calculating step metric…
[02/24/19 21:57:06.741][DEBUG] [Camera Thread] Taking auto focus frame(s)…
[02/24/19 21:57:06.741][DEBUG] [Camera Thread] Canon camera: Capturing auto focus frame…
[02/24/19 21:57:06.741][DEBUG] [Camera Thread] Canon: AF Binning: 800…
[02/24/19 21:57:06.741][DEBUG] [Camera Thread] Canon: AF Exposure length: 10 seconds…
[02/24/19 21:57:06.741][DEBUG] [Camera Thread] Canon: AF Exposure DL speed: b
[02/24/19 21:57:06.796][DEBUG] [Camera Thread] Canon: Setting ISO to: 800
[02/24/19 21:57:06.796][DEBUG] [Camera Thread] Canon: ISO look val: 96
[02/24/19 21:57:06.861][DEBUG] [Camera Thread] Canon: Exposing for 10 seconds…
[02/24/19 21:57:06.961][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 40A, parameter 0,
[02/24/19 21:57:06.961][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property B, parameter 0,
[02/24/19 21:57:06.961][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 40A, parameter 0,
[02/24/19 21:57:06.961][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property B, parameter 0,
[02/24/19 21:57:06.961][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 40A, parameter 0,
[02/24/19 21:57:06.961][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 40A, parameter 0,
[02/24/19 21:57:06.961][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 402, parameter 0,
[02/24/19 21:57:06.961][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 402, parameter 0,
[02/24/19 21:57:06.961][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 100, parameter 0,
[02/24/19 21:57:07.171][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 40A, parameter 0,
[02/24/19 21:57:17.111][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 104, parameter 0,
[02/24/19 21:57:17.111][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 104, parameter 0,
[02/24/19 21:57:17.111][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 404, parameter 0,
[02/24/19 21:57:17.111][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 405, parameter 0,
[02/24/19 21:57:17.111][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 406, parameter 0,
[02/24/19 21:57:17.111][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 405, parameter 0,
[02/24/19 21:57:17.111][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 402, parameter 0,
[02/24/19 21:57:17.112][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 102, property 406, parameter 0,
[02/24/19 21:57:17.791][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 405, parameter 0,
[02/24/19 21:57:17.792][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 406, parameter 0,
[02/24/19 21:57:17.792][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 405, parameter 0,
[02/24/19 21:57:17.792][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 402, parameter 0,
[02/24/19 21:57:17.792][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 102, property 406, parameter 0,
[02/24/19 21:57:18.012][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 40A, parameter 0,
[02/24/19 21:57:18.013][DEBUG] [Canon Download Thread] Canon: Directory Item Requested Transfer
[02/24/19 21:57:18.013][DEBUG] [Canon Download Thread] – Event delay: 0 ms
[02/24/19 21:57:19.556][DEBUG] [Canon Download Thread] --------------> getCapturedItem time: 1543 ms
[02/24/19 21:57:19.970][DEBUG] [Camera Thread] Created full file name (file does not exist): C:\Users\sdeli\AppData\Local\SequenceGenerator\Temp\metric.fit
[02/24/19 21:57:19.971][DEBUG] [Camera Thread] Extracting RAW data…
[02/24/19 21:57:19.971][DEBUG] [Camera Thread] RAW arg data: -D -T -4 -W -v -t 0 “C:\Users\sdeli\AppData\Local\SequenceGenerator\Temp\cannonRaw-0.tmp”
[02/24/19 21:57:20.078][DEBUG] [Camera Thread] DCRAW Physical Memory Usage: 946176
[02/24/19 21:57:20.581][DEBUG] [Camera Thread] DCRAW Physical Memory Usage: 25526272
[02/24/19 21:57:21.082][DEBUG] [Camera Thread] DCRAW Physical Memory Usage: 40615936
[02/24/19 21:57:21.584][DEBUG] [Camera Thread] DCRAW Physical Memory Usage: 44556288
[02/24/19 21:57:22.085][DEBUG] [Camera Thread] DCRAW Physical Memory Usage: 164868096
[02/24/19 21:57:22.587][DEBUG] [Camera Thread] Done extracting RAW data, checking for success…
[02/24/19 21:57:22.587][DEBUG] [Camera Thread] RAW data extraction is good…
[02/24/19 21:57:22.587][DEBUG] [Camera Thread] Extracting bitmap data from RAW (tiff)…
[02/24/19 21:57:22.646][DEBUG] [Camera Thread] Creating bitmap (5496,3670)…
[02/24/19 21:57:22.653][DEBUG] [Camera Thread] Locking bitmap for write
[02/24/19 21:57:22.653][DEBUG] [Camera Thread] RAW bith depth: 16
[02/24/19 21:57:22.709][DEBUG] [Camera Thread] Internal Interface: Set Preview…
[02/24/19 21:57:22.709][DEBUG] [Camera Thread] Display image preview using asynch task…
[02/24/19 21:57:23.218][DEBUG] [Main Thread] --> Find stars (normal)
[02/24/19 21:57:23.330][DEBUG] [Main Thread] AF frame was too large… downsample = 0.25…
[02/24/19 21:57:23.898][DEBUG] [Main Thread] Star detection using min star size of 2px…
[02/24/19 21:57:23.898][DEBUG] [Main Thread] Star detection using max star size of 40px…
[02/24/19 21:57:23.920][DEBUG] [Main Thread] Find stars took: 702 ms…
[02/24/19 21:57:24.510][DEBUG] [Camera Thread] Auto focus HFR calculated at: 0.00
[02/24/19 21:57:25.513][DEBUG] [Camera Thread] HFR value from auto focuser is 0!, trying again…
[02/24/19 21:57:25.513][DEBUG] [Camera Thread] Taking auto focus frame(s)…
[02/24/19 21:57:25.516][DEBUG] [Camera Thread] Canon camera: Capturing auto focus frame…
[02/24/19 21:57:25.517][DEBUG] [Camera Thread] Canon: AF Binning: 800…
[02/24/19 21:57:25.517][DEBUG] [Camera Thread] Canon: AF Exposure length: 10 seconds…
[02/24/19 21:57:25.517][DEBUG] [Camera Thread] Canon: AF Exposure DL speed: b
[02/24/19 21:57:25.567][DEBUG] [Camera Thread] Canon: Setting ISO to: 800
[02/24/19 21:57:25.567][DEBUG] [Camera Thread] Canon: ISO look val: 96
[02/24/19 21:57:25.650][DEBUG] [Camera Thread] Canon: Exposing for 10 seconds…
[02/24/19 21:57:25.769][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 40A, parameter 0,
[02/24/19 21:57:25.769][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property B, parameter 0,
[02/24/19 21:57:25.769][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 40A, parameter 0,
[02/24/19 21:57:25.769][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property B, parameter 0,
[02/24/19 21:57:25.769][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 40A, parameter 0,
[02/24/19 21:57:25.769][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 40A, parameter 0,
[02/24/19 21:57:25.769][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 402, parameter 0,
[02/24/19 21:57:25.769][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 402, parameter 0,
[02/24/19 21:57:25.769][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 100, parameter 0,
[02/24/19 21:57:25.988][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 40A, parameter 0,
[02/24/19 21:57:35.949][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 104, parameter 0,
[02/24/19 21:57:35.949][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 104, parameter 0,
[02/24/19 21:57:35.949][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 404, parameter 0,
[02/24/19 21:57:35.949][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 405, parameter 0,
[02/24/19 21:57:35.949][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 406, parameter 0,
[02/24/19 21:57:35.949][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 405, parameter 0,
[02/24/19 21:57:35.949][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 101, property 402, parameter 0,
[02/24/19 21:57:35.949][DEBUG] [Main Thread] Canon: PropertyEventHandler: event 102, property 406, parameter 0,
[02/24/19 21:57:36.313][DEBUG] [Camera Thread] HFR value from auto focuser is 0!, trying again…
[02/24/19 21:57:36.313][DEBUG] [Camera Thread] AF abort requested
[02/24/19 21:57:36.319][DEBUG] [Camera Thread] Auto focus (finally): closing dialog…
[02/24/19 21:57:36.321][DEBUG] [Focuser Thread] SGM_FOCUSER_MOVE_ABS message received…
[02/24/19 21:57:36.321][DEBUG] [Focuser Thread] Focuser moving to 2260
[02/24/19 21:57:36.345][DEBUG] [Focuser Thread] Focuser move call complete
[02/24/19 21:57:36.349][DEBUG] [AfChartThread] AF chart dialog is closed…
[02/24/19 21:57:36.365][DEBUG] [Camera Thread] SetStartTemp: Using focuser for temperature…
[02/24/19 21:57:36.365][DEBUG] [Camera Thread] Set start frame temp to 20…
[02/24/19 21:57:36.365][DEBUG] [Camera Thread] Auto focus complete…
[02/24/19 21:57:36.370][DEBUG] [Camera Thread] SGM_FOCUSER_AUTO_FOCUS complete…