PiSpace Sky

Use a location close to where you will stand

Start with observing locations or the comparison tool. If the listed places do not match, open the coordinate planner and use the site you intend to visit. Check date, local time, Moon position and cloud forecast together. Calculated twilight and a weather forecast have different meanings. A forecast can change and neither tells you about a wall, local lighting or a locked gate at the site.

Use the sources page to see where a feature gets its values. Bring a printed checklist so you can record the conditions you actually found on the night.

• Browse observing locations

• Open the coordinate planner

• Get the observing checklist