gre­go­ri­aa­ni­nen ­kau­ko­put­kisubstantiivi

1. 1.(Tähtitiede)James Gregoryn keksimä kaukoputkityyppi

1. 1.a reflecting telescope that has a paraboloidal primary mirror and a hyperboloidal secondary mirror; light is brought to a focus through an aperture in the center of the primary mirror

Synonyymit

Hierarkia