The Chandra X-ray Observatory is the U.S. follow-on to the Einstein
Observatory. Chandra was formerly known as AXAF, the Advanced X-ray
Astrophysics Facility, but renamed by NASA in December, 1998.
Originally three instruments and a high-resolution mirror carried in
one spacecraft, the project was reworked in 1992 and 1993. The Chandra
spacecraft carries a high resolution mirror, two imaging detectors,
and two sets of transmission gratings. Important Chandra features are:
an order of magnitude improvement in spatial resolution, good
sensitivity from 0.1 to 10 keV, and the capability for high spectral
resolution observations over most of this range.
The Chandra X-ray Observatory is the U.S. follow-on to the Einstein
Observatory. Chandra was formerly known as AXAF, the Advanced X-ray
Astrophysics Facility, but renamed by NASA in December, 1998.
Originally three instruments and a high-resolution mirror carried in
one spacecraft, the project was reworked in 1992 and 1993. The Chandra
spacecraft carries a high resolution mirror, two imaging detectors,
and two sets of transmission gratings. Important Chandra features are:
an order of magnitude improvement in spatial resolution, good
sensitivity from 0.1 to 10 keV, and the capability for high spectral
resolution observations over most of this range.
The First Byurakan Survey (FBS) is the largest and the first systematic objective prism survey of the extragalactic sky. It covers 17,000 sq.deg. in the Northern sky together with a high galactic latitudes region in the Southern sky. The FBS has been carried out by B.E. Markarian, V.A. Lipovetski and J.A. Stepanian in 1965-1980 with the Byurakan Observatory 102/132/213 cm (40"/52"/84") Schmidt telescope using 1.5 deg. prism. Each FBS plate contains low-dispersion spectra of some 15,000-20,000 objects; the whole survey consists of about 20,000,000 objects.
Measurements of comet Halley in the spectral channel of IKS on board
the Vega-1 spacecraft. Data are retrieved from the PDS Small Bodies
Node data set (2011 reformatted version) and updated. The data set
consists in 101 tables providing the radiance spectrum of comet Halley
from various distances, plus two composite spectra. For details and
further references, see: Combes M. et al., 1988, The 2.5-12 micron
Spectrum of Comet Halley from the IKS-VEGA Experiment, Icarus, 76,
404-436 [1988Icar...76..404C]
Planetary Atmospheres Research Unit - Royal Belgian Institute for
Space Aeronomy
Description:
Derived data from measurements of the NOMAD instrument on board ESA's
Trace Gas Orbiter. For more info on NOMAD, see Vandaele et al. (2018)
https://doi.org/10.1007/s11214-018-0517-2 Vertical profiles of CO2
density and temperature of the Martian atmosphere: See papers Trompet
et al. (2023a,b) https://doi.org/10.1029/2022JE007277,
https://doi.org/10.1029/2022JE007279. Vertical profiles of H2O
density: see paper Aoki et al. (2022)
https://doi.org/10.1029/2022JE007231. Vertical profiles of O3 density:
see paper Piccialli et al. (2022) https://doi.
org/10.1029/2022EA002429 Vertical profiles of aerosols: see paper
Flimon et al. (in rev.)
Planetary Atmospheres Research Unit - Royal Belgian Institute for
Space Aeronomy
Description:
Profiles of species in Venus atmosphere terminator. Data retrieved
from calibrated spectra obtained with the SPICAV-SOIR instrument on
board the Venus Express spacecraft. These spectra can be checked on
the ESA PSA repository. See: A.C. Vandaele et al., Contribution from
SOIR/VEX to the updated Venus International Reference Atmosphere
(VIRA), Adv. Space Res. (2015),
http://dx.doi.org/10.1016/j.asr:2015.08.012.
