My camera has not yet been updated to give correct GPS info in 16 bit mode, but the calibration LED does work in that mode yet I get different results to you.įor instance, at 20 ms and USB traffic 50, 640 x 480 in 16 bit, I get a calibration start position of 1,047,460 and an end pos of 2,529,670. I tried some experiments with my own qhy 174 to see if I get the same results as you for the calibration parameters, and sadly it seems that I get different results. This could give you also a feeling about the accuracy. time of a recorded SER was 100.12 ms / 9.987 fps, no dropped frames. time in the GPS status window is now 99.999 ms but the calibration is lost (?). If I decrease the the CalStartPos from 14140 to 9361 the exp. The counter was precise to about +/- 6 µs, with frequ.
time is 100 ms, in the above calibrated state the GPS status window shows an exp. To get it exact I must move the calibration slider(s) - but this is destroying the calibration found. time shown in the GPS status window is not exact in the range of about +/- 100 µs. I observed that in the case of an exact calibration the exp. How or where can I see the result of the succesful calibration (apart from the LED)? By this I mean that if we want the exposure time to be correct within 1 µs, how close does our calibration value need to be? +/-10 ? +/-50? +/- 500? If for instance I knew that we didn't need to be closer than +/-100 then it would help me work out the best way to set up the sliders to give good control and accuracy. Another piece of information that would be useful if you have it to hand is how sensitive the recorded exposure time is to the exact value of the calibration parameters.
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