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Attaching a handle to the top rail is a must do to carefully manage this ota. I can reach focus with both my William Optics 1.6x OCS and a Siebert 1.25x OCS that i bought for the dob I had. You can use a blower to remove dust from the primary and secondary. I can get my hand past the secondary, and it's not a dainty one ( the hand that is ). The secondary has a spot mark for collimation if needed.
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