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Summary of Contents for Apertura 75Q
- Page 1 75Q Quintuplet Refractor User’s Manual By Matthew M Paul & Edward Bevan 2023...
- Page 2 Overview The Apertura 75Q Quintuplet Refractor uses an FCD100 extra low dispersion element in its five element Petzval design. It is of excellent quality and produces sharp, bright, high contrast images for both visual and photographic use. The dual speed rack and pinion focuser has an integrated rotator which is useful for imaging as well as quick positional adjustments during visual observations.
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Page 3: Using The Telescope
Using The Telescope Mounting The Apertura 75Q comes from the factory with a 11.75” D series dovetail plate installed, which can be attached to most telescope mounts on the market. An 11.25” V series dovetail has been included in the box to allow for mounting in saddles of that style, or replacement of the top handle if so desired. - Page 4 The Apertura 75Q is designed to have a back focal distance around the industry standard 55 mm. This is the typical back focus of a DSLR with T-adapter, or cooled astronomy camera with its included adapters.
- Page 5 2” Filter Cell The 75Q comes equipped with a built in threaded 2” filter cell. To install a filter, first unthread the knurled section at the very back of the telescope, the section that the rear dust cap threads on to. Inside this section are threads to hold a filter inside the telescope when the cell is reinstalled.
- Page 6 Then, remove the coarse focus knob from the telescope. The Apertura 75Q has a 6mm connection on the coarse adjustment shaft. This is the size adapter or flex coupler that will need to be used when installing the auto focuser. There are three possible M4 screw holes on the bottom of the focuser shaft housing that can be used to mount the autofocuser bracket;...
- Page 7 Additional Technical Information...
- Page 10 Warranty The Apertura Absolute Warranty provides two years of coverage against product defects. After the initial two-year warranty expires, this product qualifies for Apertura's Three-Year Accident Replacement Program. In addition, the Apertura Absolute Warranty is transferable! It is important to keep your original receipt and the product's...
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