130 years of spectroheliograms at Paris-Meudon observatories (1892-2022)

ARTICLE
version en francais (PDF)
English version (PDF)

FIGURES

fig01.jpg

(634 KO)
2943 x 893 fig02.jpg

(676 KO)
2657 x 1352 fig03.jpg

(2.13 MO)
3961 x 1755

fig04.JPG

(1.03 MO)
2336 x 1598 fig05.jpg

(341 KO)
1329 x 1215 fig06.JPG

(730 KO)
2926 x 1223

fig07.jpg

(808 KO)
2712 x 1523 fig08.jpg

(682 KO)
1958 x 1164 fig09.jpg

(645 KO)
2846 x 1161

fig10.jpg

(316 KO)
2340 x 758 fig11.jpg

(1.03 MO)
2944 x 1681 fig12.jpg

(910 KO)
1884 x 2420

fig13.JPG

(528 KO)
2387 x 806 fig14.jpg

(1.12 MO)
2813 x 1909 fig15.JPG

(125 KO)
1320 x 640

fig16.JPG

(245 KO)
1332 x 836 fig17.JPG

(251 KO)
1500 x 839 fig18.jpg

(657 KO)
2154 x 1251

fig19.jpg

(424 KO)
1519 x 1052 fig20.JPG

(552 KO)
2761 x 1448 fig21.jpg

(2.42 MO)
3815 x 2705

fig22.jpg

(404 KO)
2526 x 960 fig23.JPG

(131 KO)
1078 x 1127 fig24.jpg

(1.11 MO)
3931 x 1689

fig25.jpg

(1.34 MO)
3078 x 2598 fig26.JPG

(391 KO)
1780 x 1465 fig27.JPG

(389 KO)
1621 x 1166

fig28.jpg

(757 KO)
2043 x 2047 fig29.JPG

(317 KO)
1655 x 1005 fig30.jpg

(1.92 MO)
2650 x 2364

fig31.jpg

(458 KO)
2052 x 999 fig32.JPG

(594 KO)
2565 x 1435 fig33.jpg

(690 KO)
1996 x 1220

fig34.jpg

(666 KO)
2550 x 1169 fig35.jpg

(1.13 MO)
3208 x 2510 fig36.jpg

(670 KO)
2714 x 946

fig37.jpg

(1.04 MO)
2722 x 997 fig38.jpg

(1.26 MO)
3370 x 1107 fig39.jpg

(2.92 MO)
5552 x 2132

fig40.jpg

(600 KO)
2536 x 842 fig41.jpg

(771 KO)
2446 x 2122 fig42.jpg

(462 KO)
1525 x 1548

fig43.jpg

(828 KO)
3069 x 1421 fig44.jpg

(165 KO)
1422 x 896 fig45.jpg

(215 KO)
1991 x 986

ZIP Archive of the 45 figures

MPEG4 VIDEO CLIPS

The Meudon spectroheliograph in 1950
This short 16 mm black and white movie shows an observation of the Sun in the CaII K line with the spectroheliograph, in the fifties, together with the collection of 13 cm x 18 cm glass photographic plates.
MOVIE 1

The 2018 version of the spectroheliograph - Observation of 28 October 2021
Six sequences showing respectively:
(1) the Halpha line scan,
(2) the wavelength exploration of the Halpha data-cube (short exposure time),
(3) the wavelength exploration of the Halpha cube (long exposure time for prominences with the ND1 disk attenuator),
(4) the CaII K line scan,
(5) the wavelength exploration of the CaII K data-cube (short exposure time),
(6) the wavelength exploration of the CaII K cube (long exposure time for prominences).
MOVIE 2

ARCHIVES OF THE MEUDON SOLAR SERVICE (PDF)

Synoptic maps of solar filaments (D'Azambuja, 1921)
D'Azambuja, 1921
The "bible", research on solar filaments, summary and conclusions (L. d'Azambuja & M. d'Azambuja, 1948)
D'Azambuja & d'Azambuja, 1948
The 1907 congress at Meudon (D'Azambuja, 1967)
D'Azambuja, 1967
Memoirs of M. D'Azambuja (1980)
D'Azambuja, 1980
Deslandres's notebook (1907)
Deslandres, 1907
Meudon observatory in 1896 (Janssen, 1896)
Janssen, 1896
Biography of M. D'Azambuja (Martres, 1991)
Martres, 1991
Biography of L. D'Azambuja (Martres, 1996)
Martres, 1996
The 1989 version of Meudon spectroheliograph (Olivieri, 1980)
Olivieri, 1989
Memoirs of G. Olivieri (1993)
Olivieri, 1993
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