- ellipsoid – at a
particular observatory, is the
deflection of the
vertical. When the Airy
transit circle was built, a
mercury basin was used to
align the telescope...
-
Meridian circles,
Mural quadrants etc. P****age
instruments (transportable, also for
prime vertical transits)
Zenith telescope Photozenith tube (PZT) zenith...
- from the
plane established by the Airy
transit,
which is
affected by
vertical deflection (the
local vertical is
affected by
influences such as nearby...
- key
instrument for
determining time was the Airy
Transit Circle (ATC),
which was used
primarily from 1851 to 1938. It was
agreed that the (
Prime) "meridian...
-
after the end of the
transit of the Earth, or only one or two
minutes after the end of the
transit of the Moon. However, the
transit did not
interfere with...
- in
their 150-year history. The WHT is
equipped with a wide
range of
instruments operating over the
optical and near-infrared regimes.
These are used...
- Earth's flattening.: 5 The 1960s saw the
launch of the
Doppler satellite Transit-1B and the
balloon satellites Echo 1, Echo 2, and PAGEOS. The
first dedicated...
- TESS
Transiting Exoplanet Survey Satellite (TESS) is a
space telescope for NASA's
Explorer program,
designed to
search for
exoplanets using the
transit method...
- used the
transit circle or
meridian circle to
establish very
accurate longitude values for
their country,
often establishing their own
prime meridian...
-
equipped with
appropriate instruments to use
lasers ranging from
different directions. The 20 gram p****ive
optical instrument is
intended to
survive for...
