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Tuesday, August 24, 2010FinderscopesA finder scope on a telescope is truly a blessing when it comes to using a telescope, assuming, of course, that it has been properly adjusted and also assuming that it is a correct match, both for the type of telescope you are using and the type of observing you want to do. Otherwise, that finderscope can be one of those telescope accessories you curse rather than praise. Red dot finderscopes for telescopes are both cheap and easy to use. They are best for a quick point at brighter objects, such as planets and bight stars. I’ve used them happily for many years and have even experimented with mounting firearms red dot sights on a telescope, though that never worked, simply because red dot gun sights typically have adjustments that fail to go dim enough to be used at night. A red dot that is too bright simply produces too much glare when you are trying to see dim celestial objects at night. Stick with red dot sights that designed for astronomy. Optical finder scopes with magnification are still my preferred finderscopes for tricky navigation and detection that involves faint stars and faint objects. Sometimes, you just need that magnification that an optical finderscope can provide, but there is a catch, here. Those little 6x30 or 8x25 finder scopes are really not up to the task for detail work with a telescope. No going cheap and small for this type of work. When you need the help of magnification, it is a mistake to use less than an 8x50 class finderscope. On telescopes I have owned that came equipped with a 6x30 finder scope, I upgraded to either a red dot or an 8x50 and never regretted the decision. Comments: |
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