Creating the Images
Most of the images produced at the Lick were recorded on glass plates coated with photosensitive chemicals. They were created as positives or negatives depending on the emulsion process in use. After working through the night to expose the plates, astronomers often continued to work into the morning to develop the images. They often found that the hours they spent at the telescope had been wasted: the exposure time had been too short or too long, or the telescope had not been guided carefully enough. Part of the drive toward creating more "objective" images involved reducing human contact with the telescopes by automating the guiding process.
In the gallery above, we present images that are perhaps less visually stunning than others available in the archive, but that speak to this labor, as well as the material limitations of the camera for capturing detail and light. Astronomers at the Lick created thousands of images, but as many were rejected along these lines, the archives in UCSC Special Collections contain relatively few images. Additionally, many of the original glass negatives are still housed on the grounds of the Lick Observatory.