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Stars - The Southern Cross - Alpha and Beta of Centaur - Southern Cross and...
IMAGE
number
PIX4581418
Image title
Stars - The Southern Cross - Alpha and Beta of Centaur - Southern Cross and pointers - Star trails - Because of the Earth's rotation, leaving the camera open, the stars advance towards the background of the sky. During the installation, gradually changing the focal length of the lens, the stars spread out and reveal their true color. Here it is the constellation of the Southern Cross (center right) and the Centaurus Alpha and Beta stars, in the center below, that are photographed in this way during a 30-minute pose. Star images are point sources of light of widely varying intensity. Normally, no single photographic exposure on colour film can capture their subtle colours. Those stars whose intensity is just right for their colour to be recorded appear insignificant on the photograph, while anything brighter is overexposed and washed out. By changing the focus of the lens during a star trail exposure, star images are spread out over the film surface. This effectively changes the amount of light in each star image as well as making it bigger. If this is done in a series of steps, as here, sooner or later all the star images will be recorded with an exposure that will reveal the star colours. Here we see the stars of the Southern Cross and pointers (alpha and beta Cen) recorded in an exposure of about 30 minutes, during which the lens focus was moved from infinity to about 1m in about 15 equally spaced steps
Stars - The Southern Cross - Alpha and Beta of Centaur - Southern Cross and pointers - Star trails - Because of the Earth's rotation, leaving the camera open, the stars advance towards the background of the sky. During the installation, gradually changing the focal length of the lens, the stars spread out and reveal their true color. Here it is the constellation of the Southern Cross (center right) and the Centaurus Alpha and Beta stars, in the center below, that are photographed in this way during a 30-minute pose. Star images are point sources of light of widely varying intensity. Normally, no single photographic exposure on colour film can capture their subtle colours. Those stars whose intensity is just right for their colour to be recorded appear insignificant on the photograph, while anything brighter is overexposed and washed out. By changing the focus of the lens during a star trail exposure, star images are spread out over the film surface. This effectively changes the amount of light in each star image as well as making it bigger. If this is done in a series of steps, as here, sooner or later all the star images will be recorded with an exposure that will reveal the star colours. Here we see the stars of the Southern Cross and pointers (alpha and beta Cen) recorded in an exposure of about 30 minutes, during which the lens focus was moved from infinity to about 1m in about 15 equally spaced steps
Personal Prints, Cards, Gifts, Reference. Not for commercial use, not for public display, not for resale.
Eg: Put this image on a mug or as a single print for oneself or a present for someone.
$25.00
Personal website or social media
Use in a presentation. All languages, 3 years. Personal presentation use or non-commercial, non-public use within a company or organization only.
$50.00
Corporate website, social media or presentation/talk
Use on a company website, in a company social media post/page/blog, in an app or in a corporate presentation (internal or external). Not for advertising or collateral. All languages, 3 years.
$190.00
Editorial (Books, magazines and newspaper) - standard
Print and/or digital. Single use, any size, inside only. Single language only. Single territory rights for trade books; worldwide rights for academic books. Print run up to 1500. 7 years. (excludes advertising)
eg:Illustrate the inside of a book or magazine with a print run of 1,000 units
$100.00
Editorial (Books, magazines and newspaper) - extended
Print and/or digital. Single use, any size, inside only. Single language only. Single territory rights for trade books; worldwide rights for academic books. Print run up to 5000. 7 years. (excludes advertising)
eg: Illustrate the inside of a book or magazine with a print run of 5,000 units
