400mm f6.8, ST10XME, AO8 guider.
240 second exposures through Rc filter. GPS time control. Analysis in AIJ, result very sensitive to detrending used.

Planewave CDK 17" & SBIG STXL 11002
120 sec pics on IR-UV filter.

400mm f6.8, ST10XME, AO8 guider.
180 second exposures through Rc filter. GPS time control. Note, this replaces observation #11168.

400mm f6.8, ST10XME, AO8 guider.
180 second exposures through Rc filter.
GPS time control. ETD calculated JD_UTC mid-time of 2459963.38467 conversion to HJD gives different answer to time calculated elsewhere (https://doncarona.tamu.edu/apps/jd/) which gives 2459963.3885(HJD) rather than 0.3856(HJD) calculated in ETD.