ImageReasonAstrophotography and Night Capture
Does my night-sky sequence actually cover the session?
Enter your session duration, exposure, and interval to see frame count, duty cycle, gap, and storage, a coverage plan, not an event prediction.
Answer
Visualize
Calculate to see the session ruler.
Compare
| Exposure | Frames |
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Plan
Calculate a result to generate a copyable plan.
A coverage plan, not a prediction
A meteor or night-sky sequence is a coverage plan, not a prediction. The useful variables are how much of the session the camera is actually exposing, how much gap remains between frames, and whether storage can hold the sequence. Those decisions help you avoid silent gaps even though they cannot create an event or clear the sky.
Over two hours, 20-second exposures every 25 seconds yield 288 frames, an 80 percent duty cycle, five seconds of gap, and about 8.64GiB at 30MiB each. Shorten the interval and the duty cycle rises, but the camera needs enough time to complete each frame. Test the first sequence, then monitor weather, battery, dew, focus, and storage separately from the arithmetic.
This is a planning calculation, not a certification. Confirm the relevant camera, lens, card, printer, contract, location, or workflow constraint in the real setup before relying on the result.
Make one controlled test with the important variable held constant. Inspect the subject detail, motion, highlights, and intended output, then adjust the setting that protects the priority you named.
FAQ
- Will this maximize my chance of photographing a meteor?
- It only plans coverage from the assumptions you enter. Meteor activity, sky conditions, framing, and technical reliability remain outside the calculation.
- Is this a guarantee?
- No. The result is bounded by the inputs and assumptions shown on the page. It is designed to support a better next decision, not replace a test, measurement, proof, or professional judgement where one is needed.