AstroCubic01
See Your Open Sky
Explore terrain and building obstruction from your current or selected position in Wide View and Horizon View.
SkyWindow · iPhone & iPad
Beyond the buildings.
Your window to the sky.
How much sky can you see beyond the buildings? Explore open sky and celestial directions from your position, and plan stargazing and Milky Way photography.
Observe From Where You Are
From sky directions to observing time.
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Match Your Viewing Height
Adjust height above ground, obstruction radius and Horizon View field of view to compare with your surroundings.
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Stars, Moon, Planets & Milky Way
Change time and position to explore celestial directions and altitudes before observing or photographing the sky.
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Best Weather in the Next 24 Hours
Compare suitable clear, dry two-hour nighttime windows. Check clouds, rain chance and visibility, then view the sky at the recommended time.
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Explore Observing Candidates
Search by name or coordinates and compare distance, terrain and observing criteria. Confirm access and site conditions yourself.
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Location-Aware Saved Widgets
See the saved location name, coordinates and calculation time. Widgets show saved calculations rather than continuously tracking live GPS.
Start in Three Steps.
- Use your current location or select an observing position on the map.
- Check observing time, height above ground and obstruction radius.
- Explore the open sky and celestial objects, then compare weather windows and nearby candidates.
Compare the Prediction With the Real Sky.
Obstruction is predicted from available terrain and structure data. Missing geometry or heights, trees, wires, balconies and site conditions can change the real view. Weather recommendations are separate from overall observing scores; missing forecasts are not treated as clear skies.