Most distant planet: a faint blue 2.3 arcsec disc; its moon Triton is reachable with 200mm+ and a camera.
Scope: 127-200mm Mak/SCT at f/15-f/25 (2-3x Barlow)
Camera: Planetary cam (IMX462/585), ADC for low planets
Exposure: 60-90s video at high fps, stack best 10%
