Double Star Planner

Double Star Planner Night of

Category

Physical Uncertain Optical Dubious (WDS "X")

Telescope

Preset

Aperture (inch)

Focal ratio f/

Eyepieces (mm)

Only pairs my eyepieces can separate

Sky conditions

Naked-eye limit (mag)

Seeing (arcsec)

Show

Observing window

Start

Start time

End time

Minimum altitude (°)

Visible at least (min)

Narrow down

Primary brighter than

Separation (″) –

Constellation

Find

Hide pairs with infrared-only magnitudes

Tonight's list

Number of targets

Max per constellation

Select a pair to see its details, altitude through the night and position-angle sketch.

Observing site

Name

Latitude (°N +)

Longitude (°E +)

Times are shown in this computer's time zone.