Selected night
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Pick a square from the matrix to pull its logbook entry.
Station PRH-04 · 44.09°N 12.57°E
Seeing measured in arcseconds, clarity in observable hours per night.
Volume XI · Annual Clarity Report
Every square is one night at Perihelion Station. Colour encodes usable observing hours — from a washed-out zero to the six-and-a-half-hour windows we live for.
Hover, or focus a cell and steer with the arrow keys. Click to pin a night.
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Pick a square from the matrix to pull its logbook entry.
| Month | Nights | Hours | Median seeing | Shape |
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