zenithal
At the peak
Zenithal means at or relating to the zenith—the point in the sky directly overhead.
In astronomy, a zenithal angle measures how far something deviates from directly above.
The word appears in technical contexts: zenithal projection, zenithal hourly rate (for meteor showers).
Miniature painters use zenithal priming—spraying from above to simulate overhead light.
Pole-to-pole great circle
- celestialOf the sky above
- declinationAngular distance from equator
- altitudeMeasured height above reference
- horizonApparent earth-sky meeting
ecliptic · equinox · solstice · ascension · sidereal · nadir · celestial sphere · star chart
Flattening Earth for charts
- stereographicAngle-preserving projection type
- orthographicOf written representation
- polarOf extreme latitudes
- equidistantEqually far from each
planisphere · cartographic · aerial view · bird's-eye · topographic · chart · surveying · geodetic
Toward the firmament
- aloftHigh in the air
- verticalAt right angles groundward
- perpendicularAt right angles
- straight upUndiluted and unchilled
canopy · hovering · supernal · uppermost · high noon · plumb · overarching · elevation
meridian
Pole-to-pole great circle
- celestialOf the sky above
- declinationAngular distance from equator
- altitudeMeasured height above reference
horizon · ecliptic · equinox · solstice · ascension · sidereal · nadir · celestial sphere · star chart · observatory
map projection
Flattening Earth for charts
- stereographicAngle-preserving projection type
- orthographicOf written representation
- polarOf extreme latitudes
equidistant · planisphere · cartographic · aerial view · bird's-eye · topographic · chart · surveying · geodetic
skyward
Toward the firmament
- aloftHigh in the air
- verticalAt right angles groundward
- perpendicularAt right angles
straight up · canopy · hovering · supernal · uppermost · high noon · plumb · overarching · elevation · upward
zenithalnadir
Lowest possible point
basal · subterranean · nethermost · bottommost · lowest
zenithalhorizontal
Parallel to the horizon
azimuthal · level · flat · lateral · ground-level