A quick testailua on the basis of both sizes are sufficient, at least 11mm ultra wide-angle lens wh

The mirror was two sizes 170 - 500 mm of length telescope with a shaft diameter of 30 mm, as well as the larger 240 - 760 mm and 50 mm along the mirror. Both of them were a little less than five euros, so I took the two sizes of the test, when I could not decide which one is suitable for touhuun better.
A quick testailua on the basis of both sizes are sufficient, at least 11mm ultra wide-angle lens when shooting to cover the sun's disc. So, to all appearances, that is a smaller 30-millimeter those clever as the smaller size makes it - more likely to be involved in the trip.
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