- 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 the
Northern Hemisphere at
which the Earth's
magnetic field points vertically downward. It is
close to but
distinct from the
Geographic North Pole and...
- 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...
-
Wikinews has
related news: NASA
launches exoplanet-hunting
satellite TESS
Transiting Exoplanet Survey Satellite (TESS,
Explorer 95 or MIDEX-7) is a
space telescope...
- in
Singapore on 20
April 2004 at 3:30 pm
local time when a M****
Rapid Transit (MRT)
tunnel construction site
caved in,
leading to the
collapse of the...
- 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...
