Evolution of the Astronomical Eyepiece - Brayebrook Observatory
Evolution of the Astronomical Eyepiece - Brayebrook Observatory
Evolution of the Astronomical Eyepiece - Brayebrook Observatory
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THE EVOLUTION <strong>of</strong> <strong>the</strong> ASTRONOMICAL EYEPIECE<br />
CONTENTS<br />
PAGES<br />
Derivatives <strong>of</strong> <strong>the</strong> Plössl and Symmetrical<br />
-Schröder’s Aplanatic 36<br />
-Erflè I 36<br />
-Erflè II 36<br />
-Erflè III 36<br />
-Kapella 36<br />
-Kaspereit 36<br />
-Zeiss Astroplanokular 37<br />
-Brandon Orthoscopic 37<br />
-Kalliplan 38<br />
-Panscopic 38<br />
-Platyscopic 38<br />
-Panoptic 38<br />
-Wide Field 38<br />
-Super Wide Aspheric 38<br />
-Leitz Widefeld Aspheric 38<br />
-LE 38<br />
-LV 38<br />
Compensating <strong>Eyepiece</strong>s -Shoemaker 39<br />
-Tuscon Aspheric 39<br />
-Clarke 39<br />
-Klee Pretoria 39<br />
Negative-Positive <strong>Eyepiece</strong>s -Fleischman 39<br />
-Nagler I 40<br />
-Nagler II 40<br />
-Meade UWA 40<br />
What are <strong>the</strong> best designs 41<br />
The evolution <strong>of</strong> eyepiece design 42 - 43<br />
Selecting eyepieces 44<br />
Testing eyepieces 45 - 47<br />
Care and maintenance <strong>of</strong> eyepieces 47 - 48<br />
The eyepiece and <strong>the</strong> eye 48 - 49<br />
6
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