SKY-WATCHER ED 80/520 + MII G2-8300
CCD+I,exp.38 s,comp. Gaia DR2 2287959834842247808,1x1.

SKY-WATCHER ED 80/520 + MII G2-8300
CCD+R,exp.30 s,comp. Gaia DR2 2287959834842247808,1x1.

SKY-WATCHER ED 80/520 + MII G2-8300
CCD+B,exp.45 s,comp. Gaia DR2 2287959834842247808,1x1.

SKY-WATCHER ED 80/520 + MII G2-8300
CCD+B,exp.60 s,comp. Gaia DR2 2287959834842247808,1x1.

Sky-Watcher REF 100/900 + QHY9


----- EBFit result: -----
Tmin = 2459171.26535
Error (1 sigma): +0.00010/-0.00011 (Bootstrapping), +0.00005/-0.00005 (Prayer bead), +0.00005/-0.00005 (LSM)
Error (95% CI): +0.00020/-0.00022 (Bootstrapping), +0.00011/-0.00010 (Prayer bead)
LSM: chi^2 = 1487.7, n_freedom = 339

SKY-WATCHER REF 80/600 + MII G1-0300 0.5x red


----- EBFit result: -----
Tmin = 2457176.41248
Error (1 sigma): +0.00036/-0.00030 (Bootstrapping), +0.00068/-0.00065 (Prayer bead), +0.00009/-0.00009 (LSM)
Error (95% CI): +0.00073/-0.00057 (Bootstrapping), +0.00085/-0.00133 (Prayer bead)
LSM: chi^2 = 2332.0, n_freedom = 233

ED 80/600,0.5x Reductor, G1 0300
----- EBFit result: -----
Tmin = 2457134.35827
Error (1 sigma): +0.00011/-0.00012 (Bootstrapping), +0.00006/-0.00006 (Prayer bead), +0.00007/-0.00007 (LSM)
Error (95% CI): +0.00024/-0.00023 (Bootstrapping), +0.00013/-0.00011 (Prayer bead)
LSM: chi^2 = 557.4, n_freedom = 190

ED 80/600,0.5x Reductor, G1 0300

----- EBFit result: -----
TminGJD = 2457134.35828
Error (1 sigma): +0.00013/-0.00011 (Bootstrapping), +0.00008/-0.00006 (Prayer bead), +0.00007/-0.00007 (LSM)
Error (95% CI): +0.00024/-0.00024 (Bootstrapping), +0.00014/-0.00011 (Prayer bead)
LSM: chi^2 = 628.4, n_freedom = 209

Vixen 80/910 ST7
TminHJD =2455060.44533, secondary minimum