Atmospheric Seeing Monitor

Real-Time Turbulence Analysis

Author: Alan Catovic | v2.0

Current Seeing

Live

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Arcseconds FWHM

r₀ (cm)

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τ₀ (ms)

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Coherence time

θ₀ (arcsec)

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Isoplanatic angle

σ_scint (%)

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Scintillation rms

Data: Open-Meteo API | —

Atmospheric Parameters

Temperature

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Wind Speed

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Humidity

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Pressure

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Dew Point

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ΔT dew

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✓

Moon & Sky

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🌑

Computing...

Illumination

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🌙 Rise

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🌙 Set

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Deep-Sky Impact:

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AO / Strehl Analysis

Aperture for Strehl (mm)

Strehl

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D/r₀

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Lucky %

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Good frames

Scintillation vs Airmass

AO / Lucky Imaging Recommendation:

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24-Hour Forecast

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🟢 Excellent (<1.5") 🔵 Good (1.5-2") 🟡 Fair (2-3.5") 🔴 Poor (>3.5") ⭐ Best observation windows

Loading forecast data...

Jet Stream Wind Profile

Wind speed through atmospheric layers (5-20 km). High jet stream speeds indicate turbulence at tropopause level, degrading seeing.

Transparency vs Seeing

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Transparency

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Limiting Magnitude

Note: Seeing affects resolution (turbulence). Transparency affects depth (extinction, aerosols).

Equipment Optimizer

Dew Point Calculator

Dew Point

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Temp Delta

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✓

Dew Status

Heater Recommendations:

Cloud Cover Forecast

Low (0-2km)

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Mid (2-6km)

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High (6-12km)

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Total Cloud Cover

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Atmospheric Dispersion Calculator

Temperature (°C)

Pressure (hPa)

Bandpass

Telescope Thermal Equilibration

Mirror Diameter (mm)

Mirror Thickness (mm)

Material

ΔT Storage-Ambient (°C)

Thermal equilibration is critical for image quality. A mirror that is warmer than ambient creates a convection column (tube currents) that severely degrades seeing locally, often worse than the atmosphere itself. Rule: allow 30 min per 5°C ΔT as a baseline.

FITS Header Generator

Generate FITS header keywords for calibration and metadata.

Target Calculator

ADC Recommendation:

Session Logger

Sky Quality Meter

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mag/arcsec²

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Naked Eye Limit:

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Multi-Site Comparison