Evolution of the Astronomical Eyepiece - Brayebrook Observatory

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EVOLUTION of the ASTRONOMICAL EYEPIECE 8
EVOLUTION of the ASTRONOMICAL EYEPIECE INTRODUCTION Of equal importance in the astronomical telescope to the objective, is the eyepiece, and yet despite a wealth of technical information written about the former, little has been written about eyepieces per sé. The aberrations of the objective are rarely viewed in isolation, and it is not generally appreciated that in most circumstances it is the aberrations of the eyepiece which predominate. In this monograph it is my intention to rectify this omission a nd a cq uaint readers with the specific properties of many different inverting eyepiece types that have been designed over the past three centuries. The evolution of the inverting eyepiece has been one of incr easing field of view and eye r elief whilst simultaneously st riving to reduce aberrati ons that restrict that field of view. As well as providing ray path schematics of the most well known types to accompany their descriptions, the author has also drawn a family tree showing the development of all the different types in broad ter ms, and how they relate to each other. Readers will find it helpful to refer to this diagram when consulting the individual eyepiece descriptions. 9
Page 3 and 4: EVOLUTION of the ASTRONOMICAL EYEPI
Page 5 and 6: THE EVOLUTION of the ASTRONOMICAL E
Page 7: THE EVOLUTION of the ASTRONOMICAL E
Page 37 and 38: ZEISS ASTROPLANOKULAR - A 2-1-2 eye
Page 41 and 42: WHAT ARE THE BEST DESIGNS EVOLUTION
Page 43 and 44: THE EVOLUTION OF EYEPIECE DESIGN (C
Page 45 and 46: TESTING EYEPIECES EVOLUTION of the
Page 47 and 48: TESTING EYEPIECES (cont): EVOLUTION
Page 51 and 52: appendix APPARENT LUMINANCE of TELE
Page 53 and 54: appendix APPARENT LUMINANCE of TELE
Page 55: BIBLIOGRAPHY LABORATOR Y INSTRUMENT
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EVOLUTION of the ASTRONOMICAL EYEPI
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EVOLUTION of the ASTRONOMICAL EYEPI
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Evolution of the Astronomical Eyepiece - Brayebrook Observatory

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