I read a few articles on the internets about lenses for astrophotography. Some of them were Fuji specific (like the one on lonelyspeck.com). However I’m interested what real people are using on a daily basis and what hints/tips do they have for a specific lens, for example a typical shutter speed, iso etc.
Let me start first, so far I was successful in using the following for astrophotography:
Samyang 12mm f2 - praised by many as the best astrolens for mirrorless systems, by 2.8 has no comatic abberation, I usually use 20 sec exposure / f2 - f2.8 at ISO 800
Fuji XF 18-55 f2.8 - very sharp and no coma when wide open, it might be difficult to manually focus at the start, I usually use 13-15 sec exposure / f2.8 ISO 800
Fuji XF 55 1.2 - super sharp, no coma by 1.8, also difficult to focus at the start, good for panoramas, however a few times it lost focus for unknown reason when shooting multiple images, I usually use 4-6 sec exposure / f1.8 / ISO 6400
Some sample images:
XF 56 1.2 panorama: