Quote:
Originally Posted by alocky
True - but that aperture can exceed the 20" criteria on a warm day, ..... |
...good point. You should always buy OTAs in the winter time. A mate of mine managed to buy a classic 19.9999997621" research grade scope for the price of a 19.9999954" (he used the money he saved on a couple of Barlow lenses and one of those electric tooth brush gadget thingies)