spec. in astronomical photography, The line or trace produced by the motion of the image of a star across the plate during exposure.
| 单词 | θ1461 |
| 释义 | the world > the universe > cosmology > science of observation > astronomical instruments > observational instruments > [noun] > stars > trace on photographic plate during exposure (1) trail1889 spec. in astronomical photography, The line or trace produced by the motion of the image of a star across the plate during exposure. |
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