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Astrophotography guides
Practical, plain-language guides on planning a night of imaging: how long to expose, what your sky means, and what to shoot.
- How long should you expose in astrophotography?
Sub length, total integration time, and how your mount and sky change both. - The Bortle scale for astrophotography
What each Bortle class means and how it changes your exposures. - Best astrophotography planning apps
Which kind of astro app to use for which job. - What deep-sky target should you photograph tonight?
How to pick tonight's deep-sky target, plus classic targets by season.
Night Logic: Astrophotography is a free iPhone app that ranks tonight’s targets for your telescope, mount, and camera, and builds an exposure plan for each one. Android is coming soon to Google Play.