This case has the space for PiMoroni NVMe base but to increase the air flow I use 12m standoffs.
The ventilation slots has this design because my Pi is running AstroArch
The base can be attached to a mini Vixen clamp to the telescope or to a tripod leg wit velcro/rubber bands.
It is a work in progress: the power button can’t be pressed and with some cables, mini HDMI needs more space.