|
Rob, I like Schmidt Cassegrains but they do have a serious disadvantage with regard to high magnification in temperate climates - it's difficult to get the tube cooled. Typically the scope will lag falling temperatures until sometime around midnight and you won't get the best view until an hour or so after temperatures stop falling. Some owners cut holes in the tube to add cooling fans or other devices to get the main mirror cooled.
With that in mind the new Celestron Edge with it's cooling vents is worth considering.
|