Hourly seeing, transparency and dew timeline
97·Boulder, CO · Sharp Seeing & Dry AirInspect hourly arcsecond seeing, transparency, moon illumination, dew risk and wind speed for Boulder, CO before setting up your rig.
Deep-sky forecast · Premium
Is the air steady enough to stack tonight?
Sky Sync scores each night for tracked imaging at your site: seeing, transparency, moon and wind.
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Eldorado Canyon, Colorado · Comet tail in deep twilight
What it checks
Seeing and transparency
Weighted toward seeing, because steady air decides fine detail.
The jet stream
Upper-level wind shear is the usual cause of soft stars on a clear night.
The moon and your sky
Scattered moonlight at the zenith, measured against the darkness of your site.
Dew and wind
Condensation risk and gusts that shake a tracking mount.
What you see
7-night Deep-Sky outlook
97·4.9/5 Seeing · Above Avg TransparencyCompare seeing stability, transparency and moon-free imaging windows across the full week at a glance.
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How Rayleigh and Mie lunar scattering affect broadband and narrowband contrast.
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How fine smoke and dust aerosols degrade transparency even when cloud cover reads zero.
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Check tonight before you commit the drive.
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