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
एक परावर्तन दूरबीन जिसमें परबोलिडियल प्राथमिक दर्पण और हाइपरबिलाइड माध्यमिक दर्पण प्रकाश है