Transparency was like 6-7/10, seeing was 6/10, C5 with DBK 21AF04.AS, 3x Tele Vue Barlows for f/30 and 5x Tele Vue Powermate for f/50.
2155, 2157, 2159 (GMT+8), f/30:
2209 (GMT+8), f/50:-
Maximum gain was used at 1/15s (to maintain 15 fps), still underexposed. It's more like a practise of f/50 for the coming Mars opposition.