Astrophotography

Depending on the subject and its purpose (design), various optical and imaging equipment can be used in astrophotography (both a telescope with a camera and a camera with its own lens ); optical systems of different types and with different focal lengths. Can be used ( short-focus for wide-angle shots, landscapes with the night sky, vast areas of the sky. For photographing celestial objects, without telescopes and long - focus lenses - not enough. The camera can be set still (for photographing traces of stars, bright celestial objects and star fields), and the drive is equipped hour mount or telescope on the mount of a design, providing compensation for the Earth's rotation. Shooting with the telescope includes ebya a number of techniques, methods and features (like the actual shooting, and the subsequent image processing.) Some manufacturers produce for astrophotography specialized models of cameras, such as Canon the EOS 20Da , Canon the EOS 60Da , different matrix color filter with a high light transmission in the field of red flowers, and additional features.

A film or digital camera with a removable lens is usually mounted on the eyepiece assembly of the telescope. To install cameras on telescopes, unified T-adapters are often used, consisting of two devices: an adapter of 1.25 "-T2, which is inserted into the telescope's focus, and an adapter screwed on it to the corresponding camera bayonet: T2-Sony alpha, T2-Canon, T2 -Nikon, T2-M42. The T2-M42 adapter is used both for interfacing with a camera (for example, Zenit, Praktica), as well as with other devices with the popular M42 mount, or as an intermediate, in front of M42 mount on the corresponding bayonet working chamber.

Astronomical photography using astrographs equipped with automatic computer control is increasingly becoming a means of leisure and obtaining beautiful images of various celestial objects.

To obtain high-quality images of distant objects, long exposures and guiding are used : manual or mechanical method of compensating the daily rotation of the Earth. With the advent of CCD arrays, new concepts have emerged in astrophotography: image calibration using offset current frames ( Bias ), dark frames ( Flat frames) and flat field frames.

The first photographs of the moon and stars were taken at the Harvard Observatory in 1847 and in 1850. And the first successful photograph of a total solar eclipse was taken at the Königsberg Observatory during a total solar eclipse on July 28, 1851 . The first photograph of a deep space object was made in 1880 by Henry Draper — this was a snapshot of the Orion Nebula (M42) .

Based on images of the starry sky in 1967, the first photographic atlas of the starry sky , created by the National Geographic Society in cooperation with the Palomar Observatory , was released in the USA ^[1] .

Distant space objects

The pioneer in the field of astrophotography of deep space objects was Andrew Common , who installed a telescope with a diameter of 0.51 m in his private observatory for shooting faint misty objects. He took photographs of most of the brightest objects in deep space.

• Infrared Astronomy
• Infrared photography

• Astrophotography // Encyclopedic Dictionary of Brockhaus and Efron : 86 t. (82 t. And 4 add.). - SPb. , 1890-1907.
• List of total solar eclipses that have been recorded
• History of the first astrophotography
• The history of astrophotography
• The history of astrophotography (in Portuguese)
• A brief history of astrophotography in Pulkovo.
• Works that won the Russian Astrophoto 2009 competition (rus) Next to some of the works, the equipment on which the picture was taken and the conditions of observation were indicated.

Processing methods:

• Methods of processing images from a CCD camera