Tints the whole app dim red to protect your dark-adapted eyes at the telescope. Stays on as you move between pages.
Sky Finder Zoom
Camera field of view
If the Moon or Milky Way markers drift as you pan the camera — sitting right when centered but sliding off toward the edges — nudge this until a marker tracks a known object across the whole frame. Lower = the markers move faster across the screen.
Narrow (15°)70°Wide (110°)
Tip: open the Sky Finder, turn on the Moon, aim at the real moon and tap Calibrate to fix the starting point. Then come back here and fine-tune this zoom so the marker stays locked on as you sweep around.
Advanced
Two-point star calibration
Calibrate the Sky Finder precisely by tapping two known stars at their actual on-screen positions. The app solves for both the aim offset and the exact camera zoom automatically — much more accurate than the single-point Moon calibrate.
Open the Sky Finder, start the camera, then tap this. You’ll be prompted to tap two named bright stars on the live view. Reset clears the saved calibration if it ever goes wrong.