This one represents my best effort so far in using short tube achromat to do astrophotography.
HEQ5, TS 60mm guide scope, QHY5L-IIc
ASI185 at prime focus, yellow #8 and UV/IR cut filter.
Skywatcher ST102 with custom 66mm aperture mask
Mosaic of 4 segments 30x1m each - total integration time 2h
Processing: stacked in DSS, stitched and binned in ImageJ, just basic digital development and some color correction