SharpCap Forums

Hi Robin

I take it the calibration takes backlash in to account.

Also if a calibration fails then it seem it show a error but then seems to turn my mount tracking off. Every time i am trying to calibrate i have to keep going back in turn enable mount tracking again in CPWI.

Mike

Hi Robin

Winds dropped a bit

Here is some log files first one i tried a calibration in center mass full frame view of the sun in frame, it failed and after fail sharpcap turned of my mount tracking can't see why in the log file.

Warning 10:26:55.708564 #7 Measured X scalings of 7.14798520996838 and 18.3323765416299 differ too much in void SharpCap.FeatureTracking.FeatureTrackingModel.DoAppend(LoggingEvent loggingEvent)
Info 10:26:55.709562 #7 Data point log for direction XPositive
Mount: {X=0.5, Y=0}, Image {X=2.969971, Y=-1.751038}
Mount: {X=1, Y=0}, Image {X=4.77002, Y=-1.383057}
Mount: {X=1.5, Y=0}, Image {X=7.459961, Y=-3.683044}
Mount: {X=1.75, Y=0}, Image {X=9.180054, Y=-4.39801}
Mount: {X=2.25, Y=0}, Image {X=10.94995, Y=-7.215027}
Mount: {X=2.75, Y=0}, Image {X=14.56006, Y=-8.392029}
Mount: {X=3.25, Y=0}, Image {X=16.67004, Y=-10.59003}
Mount: {X=3.75, Y=0}, Image {X=20.44006, Y=-12.35602}
Mount: {X=4.25, Y=0}, Image {X=22.93005, Y=-13.69501}
Mount: {X=4.75, Y=0}, Image {X=26.12, Y=-14.91803}
Mount: {X=5.25, Y=0}, Image {X=30.31006, Y=-16.638}
Mount: {X=5.75, Y=0}, Image {X=34.07996, Y=-18.24506}
Mount: {X=6.25, Y=0}, Image {X=37.45996, Y=-19.36902}
Mount: {X=6.75, Y=0}, Image {X=43.39001, Y=-18.52106}
Mount: {X=7.25, Y=0}, Image {X=46.22998, Y=-21.55304}
in void SharpCap.FeatureTracking.PointList.LogData()
Info 10:26:55.709562 #7 Data point log for direction XNegative
Mount: {X=-0.5, Y=0}, Image {X=-8.369995, Y=3.120972}
Mount: {X=-1, Y=0}, Image {X=-15.38, Y=6.238953}
Mount: {X=-1.25, Y=0}, Image {X=-20.15002, Y=8.392944}
Mount: {X=-1.5, Y=0}, Image {X=-24.88, Y=11.42798}
Mount: {X=-1.75, Y=0}, Image {X=-28.94995, Y=13.34198}
Mount: {X=-2, Y=0}, Image {X=-33.43994, Y=16.099}
Mount: {X=-2.25, Y=0}, Image {X=-36.56995, Y=17.00897}
Mount: {X=-2.5, Y=0}, Image {X=-39.16003, Y=18.85095}
Mount: {X=-2.75, Y=0}, Image {X=-43.87, Y=25.09399}
in void SharpCap.FeatureTracking.PointList.LogData()


Here is log file of image feature calibration again after fail mount tracking is off again.


Warning 10:26:55.708564 #7 Measured X scalings of 7.14798520996838 and 18.3323765416299 differ too much in void SharpCap.FeatureTracking.FeatureTrackingModel.DoAppend(LoggingEvent loggingEvent)
Info 10:26:55.709562 #7 Data point log for direction XPositive
Mount: {X=0.5, Y=0}, Image {X=2.969971, Y=-1.751038}
Mount: {X=1, Y=0}, Image {X=4.77002, Y=-1.383057}
Mount: {X=1.5, Y=0}, Image {X=7.459961, Y=-3.683044}
Mount: {X=1.75, Y=0}, Image {X=9.180054, Y=-4.39801}
Mount: {X=2.25, Y=0}, Image {X=10.94995, Y=-7.215027}
Mount: {X=2.75, Y=0}, Image {X=14.56006, Y=-8.392029}
Mount: {X=3.25, Y=0}, Image {X=16.67004, Y=-10.59003}
Mount: {X=3.75, Y=0}, Image {X=20.44006, Y=-12.35602}
Mount: {X=4.25, Y=0}, Image {X=22.93005, Y=-13.69501}
Mount: {X=4.75, Y=0}, Image {X=26.12, Y=-14.91803}
Mount: {X=5.25, Y=0}, Image {X=30.31006, Y=-16.638}
Mount: {X=5.75, Y=0}, Image {X=34.07996, Y=-18.24506}
Mount: {X=6.25, Y=0}, Image {X=37.45996, Y=-19.36902}
Mount: {X=6.75, Y=0}, Image {X=43.39001, Y=-18.52106}
Mount: {X=7.25, Y=0}, Image {X=46.22998, Y=-21.55304}
in void SharpCap.FeatureTracking.PointList.LogData()
Info 10:26:55.709562 #7 Data point log for direction XNegative
Mount: {X=-0.5, Y=0}, Image {X=-8.369995, Y=3.120972}
Mount: {X=-1, Y=0}, Image {X=-15.38, Y=6.238953}
Mount: {X=-1.25, Y=0}, Image {X=-20.15002, Y=8.392944}
Mount: {X=-1.5, Y=0}, Image {X=-24.88, Y=11.42798}
Mount: {X=-1.75, Y=0}, Image {X=-28.94995, Y=13.34198}
Mount: {X=-2, Y=0}, Image {X=-33.43994, Y=16.099}
Mount: {X=-2.25, Y=0}, Image {X=-36.56995, Y=17.00897}
Mount: {X=-2.5, Y=0}, Image {X=-39.16003, Y=18.85095}
Mount: {X=-2.75, Y=0}, Image {X=-43.87, Y=25.09399}
in void SharpCap.FeatureTracking.PointList.LogData()
Warning 10:43:09.221363 #7 Measured X scalings of 11.3071911094146 and 41.0637495877522 differ too much in void SharpCap.FeatureTracking.FeatureTrackingModel.DoAppend(LoggingEvent loggingEvent)
Info 10:43:09.221363 #7 Data point log for direction XPositive
Mount: {X=0.5, Y=0}, Image {X=6.896866, Y=-1.517623}
Mount: {X=1, Y=0}, Image {X=12.84665, Y=-3.092703}
Mount: {X=1.25, Y=0}, Image {X=14.92942, Y=-2.728017}
Mount: {X=1.5, Y=0}, Image {X=17.13911, Y=-3.455645}
Mount: {X=2, Y=0}, Image {X=25.23087, Y=-4.755119}
Mount: {X=2.375, Y=0}, Image {X=28.94646, Y=-2.968056}
Mount: {X=2.75, Y=0}, Image {X=27.81873, Y=-7.441483}
Mount: {X=3.125, Y=0}, Image {X=33.17085, Y=-9.291576}
Mount: {X=3.5, Y=0}, Image {X=38.74908, Y=-5.652367}
Mount: {X=3.875, Y=0}, Image {X=44.09312, Y=-6.478818}
Mount: {X=4.25, Y=0}, Image {X=47.61982, Y=-13.34211}
Mount: {X=4.625, Y=0}, Image {X=55.13602, Y=-10.55996}
in void SharpCap.FeatureTracking.PointList.LogData()
Info 10:43:09.221363 #7 Data point log for direction XNegative
Mount: {X=-0.5, Y=0}, Image {X=-11.54267, Y=-1.245481}
Mount: {X=-1, Y=0}, Image {X=-19.50819, Y=8.875015}
Mount: {X=-1.25, Y=0}, Image {X=-35.09497, Y=4.912156}
Mount: {X=-1.4375, Y=0}, Image {X=-47.28401, Y=8.262241}
Mount: {X=-1.578125, Y=0}, Image {X=-53.85315, Y=11.27758}
in void SharpCap.FeatureTracking.PointList.LogData()

Mike

Hi Mike,

that's interesting... What is happening is that SharpCap is rejecting the data because the mount seems to move faster in one direction than the other. What settings were you using for the movement rate? It could be that the command to move the mount is turning off tracking (ASCOM doesn't define whether that happens or not, so it may vary according to manufacturer and ASCOM driver). Then, if you ask it to move at 3x sidereal in RA, the effective movement rate would be ~2x in one direction and ~4x in the other, due to the fact that the sun is moving at ~1x sidereal rate.

cheers,

Robin

Hi Robin

Strange, where would i find those rates, i am using CPWI when i check in there i have just set tracking rate to Solar thats the only change i have made. Been using the mount for DSO for years no tracking issues use NINA.

Also quick question i have been tracking all morning on my ZWO 178mm camera with a POI, just swtiched to me ZWO 174mm set a POI hit monitor but the guide button is greyed out ?? was working all morning would could be stopping the guide button being available.

Mike

Hi Robin

I have switched back to the 178mm but still the same the guide button is greyed out. Restarted sharpcap still the same not sure why i have been using POI tracking all morning without a problem.

Mike

Hi Robin

Do you need a calibrate in POI mode before guide comes up

Mike

Hi,

no, you shouldn't need to calibrate in ROI mode, since calibration is to work out which way the image moves when the mount is moved in different directions, and that doesn't apply for ROI.

The movement speed dropdown is top-left of the tracking window - You may find that there are various rates including guiding rate and multiples of sidereal rate shown. Guiding rate is more likely to be correctly added onto the current tracking rate than the other movement rates. See https://docs.sharpcap.co.uk/4.0/#Feature%20Tracking

cheers,

Robin

Hi Robin

there may be a bug with POI tracking then i tried multiple times and i need to select calibrate before guiding is enabled to select in POI i don't thing calibrate in fact does anything in that mode but as soon as i hit the that button guide changes from grey out to selectable. i will check out about tracking rates, still not sure why one direction rate would be different.

mike

hi robin

i can't seem to find this drop down for tracking can you help a little with finding it, i did read the attached manual but again can't find the menu. i can see rate under telescope control menu. there is no drop down i can find on the top left of the feature tracking menu

mike

hi robin

i see it now "movement speed" how would that effect speed changes in just one dirrection. i though my log indicated speed is different directions.

mike