| Astronomical Society of the Pacific - 1905 - 606 pages
...the early morning hours had been apparent. In view of the difficulties that were being experienced, this point was again carefully investigated, and it...mirrors change their figure slowly. If the mirrors are shielded from sunlight between exposures of photographs, and if the exposure time is made as short... | |
| 1906 - 476 pages
...the early morning hours had been apparent. In view of the difficulties that were being experienced, this point was again carefully investigated, and it...mirrors change their figure slowly. If the mirrors are shielded from sunlight between exposures of photographs, and if the exposure time is made as short... | |
| 1906 - 460 pages
...the early morning hours had been apparent. In view of the difficulties that were being experienced, this point was again carefully investigated, and it...mirrors change their figure slowly. If the mirrors are shielded from sunlight between exposures of photographs, and if the exposure time is made as short... | |
| 1906 - 464 pages
...the early morning hours had been apparent. In view of the difficulties that were being experienced, this point was again carefully investigated, and it...mirrors change their figure slowly. If the mirrors are shielded from sunlight between exposures of photographs, and if the exposure time is made as short... | |
| Mount Wilson Observatory - 1908 - 594 pages
...the early morning hours had been apparent. In view of the difficulties that were being experienced, this point was again carefully investigated, and it...mirrors change their figure slowly. If the mirrors are shielded from sunlight between exposures of photographs, and if the exposure time is made as short... | |
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