Field guides
Make every frame count.
Clear, practical guides to capturing and stacking night-sky photos on iPhone and iPad. Start with the files you have, learn what each processing step does, and choose the workflow that fits your setup.
How to stack astrophotography photos on iPhone
From a set of sharp night-sky photos to one cleaner image, with checks that prevent soft or noisy stacks.
Read the guide →02 · Telescope filesHow to stack FITS files on iPad
Move compatible light frames into Files, choose a consistent sequence, and process it without a computer.
Read the guide →03 · The basicsHow astrophotography stacking works
What an astro image stacker does with your frames: alignment, stacking methods, calibration and the limits of each.
Read the guide →04 · Coming from desktopDeepSkyStacker and Sequator users: stacking on iPhone and iPad
An honest comparison of what carries over, what works differently and what Astro Stacker doesn’t do yet.
Read the comparison →05 · In the appQuick, Quality or Max Detail: choosing a stack mode
What each mode does to your frames, how many it keeps, and which to use for your session.
Read the guide →06 · Whole workflowHow to get the best results from Astro Stacker
Capture, calibration frames, stack modes, finishing and export, in the order you’ll need them.
Read the guide →07 · TroubleshootingHow to fix “Not Enough Usable Stars”
Why alignment needs stars, the fixes that work, and other common stacking errors.
Read the guide →New to the app? See the six-stage Astro Stacker workflow or read the common questions.