- 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...
-
equipped with
appropriate instruments to use
lasers ranging from
different directions. The 20 gram p****ive
optical instrument is
intended to
survive for...
- 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...
-
astronomical instruments,
including a 9.6-inch
achromatic refracting telescope, a 5.5-inch
transit instrument, a 4-inch
meridian circle, and a 5-inch
prime vertical...
-
Transiting Exoplanet Survey Satellite (TESS) is a
space telescope for NASA's
Explorer program,
designed to
search for
exoplanets using the
transit method...
-
allow its
instruments to take
images without any
distortions caused by vibrations. The
total cost of the MRO
through the end of its
prime mission was...
