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| M42 Scope: Vixen ed80sf + reducer, 510mm Mount: Vixen GP2 DSLR: Nikon D5300 Guiding: QHY5-II-L-M ，Raspberry Pi2, Lin guider 4 x 10 min @ iso 200, 3 dark, bias DSS, PI, PS |
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| Nikon D5300, Vixen ED80sf with reducer and LPS D1 filter 25 x 2 min @ iso 400, flat and bias (No dark) with Raspberry pi3 auto guiding |
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| M27 at Tai Au Mun D5300 30 x 2 min ED80sf with reducer, IDAS D1 filter GP2 with raspberry pi auto guiding Dark and Bias frame DSS, Pixinsight LE, PS |
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| M27 (Single frame 2 min) |
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| M57 (Single frame 4min) |
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| Ring Nebula M57 at Tai Au Mun D5300 22 x 4 min ED80sf with reducer, IDAS D1 filter GP2 with raspberry pi auto guiding Dark and Bias frame DSS, Pixinsight LE, PS |
Reference:PID control coefficients adjustment should by performed empirically, using the specific equipment and with full load. The idea of the adjustment is to find coefficients that don't lead to 'under-guiding' (corrections are too slow) or 'over-guiding' (sinusoidal oscillations with increasing amplitude).
It is recommended to choose the range of values from 10 to slightly more than the recommended value during the selection of the proportional coefficient (see 'Info' block) and move through this region with the step of 10, looking attentively, how the result of the guiding will change.
The selection of the integral coefficient is recommended to perform, if there is constant impact in one direction. This coefficient will allow for the faster correction of the impact, because it takes into account the previous guiding history.
The differential coefficient, as has been said above, is disabled at the moment.
