Designed for 240 space science per second. Adjust number of grabbers based on asteroid productivity. Please mind that you may need to stamp the blueprint twice for all grabbers to be built.
For Reference: ~11kspm @ asteroid prod 18 with 4*14 grabbers as in blueprint.
Can also be used with common buildings/modules, yielding ~1kspm at asteroid productivity 0.
Production loop based on https://www.factorio.school/view/-OBdq3vJ2slIWEDAXEeM