| 摘要 |
A solar prominence adapter comprises a tubular housing having a first end adapted for connection with the eyepiece holder of a conventional reflecting or refracting telescope and the other end for connection with a conventional eyepiece. The housing includes an occulting disc positioned in a first plane for eclipsing or occulting an image of the sun present in that plane. A focusing system is provided for focusing the occulted image onto a second focal plane in which the image may be viewed by means of the conventional eyepiece. Supported in the housing is a prism for attenuating the solar radiation which is directed into the housing by the telescope when the adapter and telescope are connected. The housing may further include a filter for filtering out all but a narrow bandwidth of solar radiation and an adjustable diaphragm for varying the intensity of the observed image.
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