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The longest exposure time that allows stars to be captured as point sources when the camera is mounted on a tripod

Author: keisanauto0724Executions: 1740
TOP/Shared Formulas (Science)/Astronomy

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Calculate the maximum exposure time (in seconds) at which stars can be captured as point sources without equatorial tracking.
Element Size (Vertical)
mm
Number of pixels (vertical)
Lens focal length
mm
Declination of the observed celestial object
°
Maximum Exposure Time seconds
During actual shooting, the exposure time may be longer or shorter than the calculated result due to factors such as lens astigmatism or strong winds; please keep this in mind when using the camera.

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