Measure a marked star in a crowded synthetic CCD field: place the aperture and separate background annulus, mask contaminating pixels, then publish flux with sufficient signal-to-noise and bounded bias. Source: https://github.com/astropy/photutils (BSD-3-Clause). Metadata tags: github-source, game.

aperture-night-signal-workshop.skillsafe.ai

Run app here

PricingCompletely free

Security scanClean — skill and frontend scanned

Source astropy/photutils

Created2026-10-30

Updated2026-10-30

Every public app is built from a security-scanned skill and must pass a clean scan — skill and frontend — before it can be listed. Have a skill of your own? Turn it into an app — or read the step-by-step walkthrough.