Askar 107PHQ 107mm f/7 Quadruplet Flat-Field Astrograph #107PHQ
The Askar 107mm 107PHQ astrograph incorporates a four-element optical design to deliver sharp, color-free images for astrophotographers and visual observers. This f/7 astrograph features an air-spaced triplet objective with two ED elements and a field-flattening corrective element further back in the optical path to correct for field curvature over a large 44mm image circle. There’s no need for a separate field flattener – this makes it easy to use this telescope with a wide range of cameras and accessories without being tied to the short back focus of many external corrective elements.
This premium astrograph includes a large 3.4” rack-and-pinion dual-speed (1:10) focuser that’s fully rotatable through 360 degrees and carries an 8kg load capacity. The focuser includes a removable visual adapter so you can insert a 1.25” or 2” diagonal. It also includes a standard shoe for mounting a finder or small guide scope (both sold separately). With the visual adapter removed, the focuser tube terminates with an M86x1 thread. The scope also includes four stackable adapters for direct attachment of a wide variety of cameras with standard metric threads.
The attractive green-trimmed optical tube of the 107PHQ is complemented with a highly functional set of aluminum rings, a Vixen-style dovetail, and a carrying handle. The handle includes separate mounting holes for additional accessories. The entire tube has a diameter of 138mm and has a length of just 655mm with the dew shield retracted. It weighs 6.9kg.
With a focal length of 749mm and apochromatic optics, the 107PHQ also works well as a serious visual instrument. A 35mm 2” eyepiece with a 68-degree apparent field of view delivers a wide 3-degree field of view at 21x, ideal for sweeping the Milky Way for star clusters and nebulae. Or power up with a short-focal length eyepiece and get sharp, high-magnification views of the moon and planets with virtually no false color.
The telescope is shipped in a foam-fitted aluminum case. Note: To offer even more versatility to the 130PHQ, Askar offers a 0.7x focal reducer for imaging applications (sold separately) This reducer takes the focal ratio down to a fast f/4.9 while preserving image sharpness and field flatness.
Specifications:
What's in the Box
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