Quote:
Originally Posted by Paul Haese
After some collimation I took an image of a water tower 5 km away from our home across the valley whilst the scope was sitting on a bench. The resolution is pretty reasonable I think, of course star testing and imaging will confirm my thoughts on the matter. See photo.
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Hello Paul,
I think it's a remarkable image at 5km. The handrail around the top of the tower is 50mm in diameter (2 arc seconds) which gives a sense of scale. As a test of resolution the guy wires, which are many times smaller probably 6 or 8mm in diameter(0.25 - 0.33 arc seconds) are well resolved and give or take the accuracy of the 5km, are right up there with (slightly better than) the manufacturer specified resolution and probably right at the diffraction limit.
Best
JA