Whitepaper EdgeHD Optics
Page 2
...the construction and testing process for EdgeHD telescopes and provide instructions for placing sensors at the optimum back-focus distance for the EdgeHD and competing "coma-free" Schmidt-Cassegrain designs. In the early 1970s, Tom Johnson, Celestron's founder, perfected the necessary techniques.... As an aplanatic, flat-field astrograph, the EdgeHD's optics provide tight, round, edge-to-edge star images over a lap made possible the volume production of a complex and formerly expensive optical component, triggering...
...the construction and testing process for EdgeHD telescopes and provide instructions for placing sensors at the optimum back-focus distance for the EdgeHD and competing "coma-free" Schmidt-Cassegrain designs. In the early 1970s, Tom Johnson, Celestron's founder, perfected the necessary techniques.... As an aplanatic, flat-field astrograph, the EdgeHD's optics provide tight, round, edge-to-edge star images over a lap made possible the volume production of a complex and formerly expensive optical component, triggering...
Whitepaper EdgeHD Optics
Page 4
... to produce equally fine imaging telescopes at the edges of the classic SCT, the EdgeHD design is an off -axis images in difficulty maintaining collimation. OFF-AXIS COMA Coma is compatible with the popular Starizona Hyperstar accessory. 4 I The Celestron EdgeHD A star image with no...expensive APS-C digital SLR cameras (under $800) and less expensive astronomical CCD cameras (under $2,000). Of course, any design that visual observers expect from the image. Furthermore, the aspheric secondary mirror places demands on -axis image. The inspiration for the new telescope ...
... to produce equally fine imaging telescopes at the edges of the classic SCT, the EdgeHD design is an off -axis images in difficulty maintaining collimation. OFF-AXIS COMA Coma is compatible with the popular Starizona Hyperstar accessory. 4 I The Celestron EdgeHD A star image with no...expensive APS-C digital SLR cameras (under $800) and less expensive astronomical CCD cameras (under $2,000). Of course, any design that visual observers expect from the image. Furthermore, the aspheric secondary mirror places demands on -axis image. The inspiration for the new telescope ...