If we were to increase our policy deductible from $500 to $2500 the premium savings would approach 30%. If your policy was $2500/yr you could be looking at a savings of as much as $750/yr. That would mean that after just 2.7 years you would be ahead of the game in premium savings!
Why do astronomers put telescopes in space? The Earth's atmosphere is about 120 miles thick and anything we see from the surface of the Earth is distorted by the water vapor and debris that is in the air.
Almost all of the major telescopes used in astronomy research are reflectors. Reflecting telescopes come in many design variations and may employ extra optical elements to improve image quality or place the image in a mechanically advantageous position. mid-20th century innovation was catadioptric telescopes such as the Schmidt camera, which use both a spherical mirror and a lens (called a corrector plate) as primary optical elements, mainly used for wide-field imaging without spherical aberration.