Charles Messier: Connaissance des Tems, an VII (1798-99), pp. 207-234 (1797)
- Observations Astronomiques de 1785 à 1796, par Charles
Messier. Connaissance des Tems pour l'année sextile, VIIe de la
République; Du 22 Septembre 1798 au 22 Septembre 1799,
anc. st., pp. 207-234.
Made at the Observatory of the Navy, at Paris,
By the Citizen Messier.
During ten years, from the month January, 1785 to the
month April, 1796.
Month Day True Time Object Details of Observation
h m s
Eclipses of the Sun, 1787 (1).
June 15 4.27.25 Sun Begin of the Eclipse.
April 3 0.33.46 Sun Begin of the Eclipse.
3.17.39 ... End of the Eclipse.
Eclipses of the Moon in 1790 (2)
April 28 10.19.46 Moon Begin of the Eclipse.
11.15.52 .... Total immersion of the moon into the umbra.
[begin of totality]
12.53.25 .... Emersion of the moon leaving the umbra.
[end of totality]
12.13.30 .... End of the Eclipse.
Oct. 22 11. 5. 6 Moon Begin of the Eclipse, doubtful.
11. 6.36 .... Begin of the Eclipse, certain.
12.13.30 .... Total immersion of the moon into the umbra.
12.14.15 .... Immersion more certain.
13.55.19 .... Emersion of the moon leaving the umbra.
13.56. 9 .... Emersion more certain.
15. 2.29 .... End of the Eclipse, doubtful, clouds.
(1) The full observation printed in Mém. of the Academy of Sciences,
year 1787, page 76.
(2) The observations printed in Mém. of the Academy of Sciences,
Discovered and observed in 1785.
- Jan. 7
- Comet discovered, in the neck of the Whale [Cetus]; the citizen
Méchain has discovered it at the same hour as me, at the great
observatory; observed to the 16th of the same month. The memoir of the
observations, with the elements, is printed in the volume of the academy
of sciences, year 1785, page 639.
- March 13
Some of the preceding observations have been published in the volumes of the
former academy of sciences, where I refer to, because one will find there
more details; but the Connaissance des tems being more widespread than the
Mémoires, it will be useful that the astronomers find here an
indication. The observations which I have reported have been made with two
achromatic refractors of three and a half feet focal length, forty lignes
aperture, and the magnification adjusted for each of the observations; the
first of these refrectors, previously cited several times in the volumes of
the academy, as one of the better which have left the hands of Dollond, is
the refractor having belonged to the former Borchart-de-Saron. The second,
equally by Dollond, with the same focal length, joined the instruments of
the observatory of the navy; it is equally good.
All the comets I have observed during these ten years, have well diverted me
from other observations; I have been even more diverted in the last years,
by the misery of circumstances; I had lack, for my observatory, of oil and
candles, and couldn't purchase, by the suppression of the salary which I have
enjoyed, as the fruits of forty years of work; but in the month of June 1796,
one came to compensate me, by attaching me to the Bureau of Longitudes.
Last Modification: February 6, 2005