Photographic plate

AGFA photographic plates, 1880
Mimosa Panchroma-Studio-Antihalo Panchromatic glass plates, 9 x 12cm, Mimosa A.-G. Dresden
Negative plate
Image resulting from a glass plate negative showing Devil's Cascade in 1900.

Photographic plates preceded photographic film as a capture medium in photography, and were still used in some communities up until the late 20th century.

- Photographic plate
AGFA photographic plates, 1880

21 related topics

Alpha

Basic view camera terminology

View camera

Large-format camera in which the lens forms an inverted image on a ground-glass screen directly at the film plane.

Large-format camera in which the lens forms an inverted image on a ground-glass screen directly at the film plane.

Basic view camera terminology
A Sanderson 'Hand' camera dating from circa 1899
Front standard shift
Front standard tilt
Front standard swing (top view)
Viewing through a Sinar F camera

At the other end of the bellows, the rear standard is a frame that holds a ground glass plate, used for focusing and composing the image before exposure—and is replaced by a holder containing the light-sensitive film, plate, or image sensor for exposure.

An image of Orion's Belt composited from digitized black-and-white photographic plates recorded through red and blue astronomical filters, with a computer synthesized green channel. The plates were taken using the Samuel Oschin Telescope between 1987 and 1991.

Astrophotography

Photography or imaging of astronomical objects, celestial events, or areas of the night sky.

Photography or imaging of astronomical objects, celestial events, or areas of the night sky.

An image of Orion's Belt composited from digitized black-and-white photographic plates recorded through red and blue astronomical filters, with a computer synthesized green channel. The plates were taken using the Samuel Oschin Telescope between 1987 and 1991.
The large 48" Oschin Schmidt Camera at Palomar Observatory
Henry Draper with a refractor telescope set up for photography (photo probably taken in the 1860s or early 1870).
The first solar eclipse photograph was taken on July 28, 1851, by a daguerrotypist named Berkowski.
Henry Draper's 1880 photograph of the Orion Nebula, the first ever taken.
One of Andrew Ainslie Common's 1883 photographs of the same nebula, the first to show that a long exposure could record stars and nebulae invisible to the human eye.
The Hubble Space Telescope shortly after the STS-125 maintenance mission in 2009.
2 minute time exposure of the comet Hale-Bopp imaged using a camera on a fixed tripod. The tree in the foreground was illuminated using a small flashlight.
The Pleiades Star Cluster photographed with a 6 megapixel DSLR connected to an 80mm refracting telescope piggybacked on a larger telescope. Made from seven 180 second images combined and processed in Photoshop with a noise reduction plugin.
NGC281, popularly the 'Pacman Nebula', imaged from a suburban location using a 130mm amateur telescope and a DSLR camera.
An amateur astrophotography set up with an automated guide system connected to a laptop.
20sec exposure photograph taken with a tripod mounted DSLR camera with 18-55mm lens
Fixed tripod mounted camera capturing "star trails"
Star trails photographed in earth orbit from the International Space Station
Fixed tripod image of a solar eclipse using a digital-SLR camera with a 500 mm lens
1 minute exposure using ISO 800 film, wide angle lens, piggybacked on an equatorial telescope
Comet Hale-Bopp, camera with a 300mm lens piggybacked
Film image of the Andromeda Galaxy shot at the prime focus of an 8" f/4 Schmidt–Newton telescope
Lagoon and Trifid Nebulae in a montage of two film exposures with an 8" Schmidt–Newton telescope, manually guided
Image of the moon taken with a Nikon Coolpix P5000 digital camera via Afocal projection through an 8-inch Schmidt–Cassegrain telescope
The Moon photographed using the Afocal technique, using 10 seconds of video stacked to create a final image.
A composite of several Digital-SLR photos compiled in Photoshop taken via eyepiece projection from an 8-inch Schmidt Cassegrain telescope.
Saturn image using negative projection (Barlow lens) with a webcam attached to a 250mm Newtonian telescope. It is a Composite image made from 10% of the best exposures out of 1200 images.
Jupiter photographed using the Afocal technique, using 10 seconds of video stacked to create a final image.

Specialized and ever-larger optical telescopes were constructed as essentially big cameras to record images on photographic plates.

Sketch of Harvard's Great Refractor telescope

Harvard College Observatory

Institution managing a complex of buildings and multiple instruments used for astronomical research by the Harvard University Department of Astronomy.

Institution managing a complex of buildings and multiple instruments used for astronomical research by the Harvard University Department of Astronomy.

Sketch of Harvard's Great Refractor telescope

HCO houses a collection of approximately 500,000 astronomical plates taken between the mid-1880s and 1989 (with a gap from 1953–1968).

The Star-Spectroscope of the Lick Observatory in 1898. Designed by James Keeler and constructed by John Brashear.

Astronomical spectroscopy

Study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, ultraviolet, X-ray, infrared and radio waves that radiate from stars and other celestial objects.

Study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, ultraviolet, X-ray, infrared and radio waves that radiate from stars and other celestial objects.

The Star-Spectroscope of the Lick Observatory in 1898. Designed by James Keeler and constructed by John Brashear.
Opacity of the Earth's atmosphere for different wavelengths of electromagnetic radiation. The atmosphere blocks some wavelengths but it is mostly transparent for visible light and a wide range of radio waves.
With a reflection grating, incident light is separated into several diffraction orders which separate different wavelengths apart (red and blue lines), excepting the 0-th order (black).
Black body curves for various temperatures.
Redshift and blueshift
Two stars of different size orbiting the center of mass. The spectrum can be seen to split depending on the position and velocity of the stars.
Optical spectrum of Comet Hyakutake.

Historically, photographic plates were widely used to record spectra until electronic detectors were developed, and today optical spectrographs most often employ charge-coupled devices (CCDs).

This blink comparator at Lowell Observatory was used in the discovery of Pluto in 1930.

Blink comparator

Viewing apparatus formerly used by astronomers to find differences between two photographs of the night sky.

Viewing apparatus formerly used by astronomers to find differences between two photographs of the night sky.

This blink comparator at Lowell Observatory was used in the discovery of Pluto in 1930.

In modern times, charge-coupled devices (CCDs) have largely replaced photographic plates, as astronomical images are stored digitally on computers.

Composite image of the GOODS-South field, result of a deep survey using two of the four giant 8.2-metre telescopes composing ESO's Very Large Telescope

National Geographic Society – Palomar Observatory Sky Survey

Composite image of the GOODS-South field, result of a deep survey using two of the four giant 8.2-metre telescopes composing ESO's Very Large Telescope

The National Geographic Society – Palomar Observatory Sky Survey (NGS-POSS, or just POSS, also POSS I) was a major astronomical survey, that took almost 2,000 photographic plates of the night sky.

Sonneberg Observatory in 2012

Sonneberg Observatory

Astronomical observatory and was formerly an institute of the Academy of Science in the German Democratic Republic.

Astronomical observatory and was formerly an institute of the Academy of Science in the German Democratic Republic.

Sonneberg Observatory in 2012
The observatory in 1935

The Sonneberg Observatory has one of the world's largest collections of photographic plates in its museum of astronomy.

Physicist Kinoshita Suekiti at the University of Manchester in 1910.

Nuclear emulsion

Type of particle detector first used in Nuclear and Particle physics experiments in the early decades of the 20th century.

Type of particle detector first used in Nuclear and Particle physics experiments in the early decades of the 20th century.

Physicist Kinoshita Suekiti at the University of Manchester in 1910.
Cecil Powell

It is a type of photographic plate, but coated with a thicker photographic emulsion of gelatine containing a higher concentration of very fine silver halide grains; the exact composition of the emulsion being optimised for particle detection.

Box of photographic plates.

Dry plate

Box of photographic plates.

Dry plate, also known as gelatin process, is an improved type of photographic plate.

Holtermann collection

Berrys Bay and Goat Island, Sydney, 1875, Charles Bayliss and Bernhardt Holtermann from negative, 136 x 95 cm (4.4 x 3.1 feet

The Holtermann Collection is the name given to a collection of over 3,500 glass-plate negatives and albumen prints, many of which depict life in New South Wales goldfield towns.