|
I have the Orion 70mm finder/guider. A brief summary of my experience with this:
-- It makes a much better finder than it does a guider. The field of view is generous but the optics do suffer from noticeable chromatic abberation
-- A star diagonal or 1.25" extension tube is needed in order to be able to achieve focus, unfortunately the supplied thumb screw does a poor job of securing eyepieces or diagonals and ideally you'd want to drill out the hole and replace it with something a bit more robust
-- The t-thread is a nice feature, but if you plan on trying to get focus using t-thread extension alone, the additional weight is almost guaranteed to cause flex
-- The helical focuser is something best adjusted during daylight hours
-- No dew shield
|