Physics – Optics
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.118...87i&link_type=abstract
(IAU, Asian-Pacific Regional Meeting, 3rd, Kyoto, Japan, Sept. 30-Oct. 5, 1984) Astrophysics and Space Science (ISSN 0004-640X),
Physics
Optics
Astronomical Observatories, Astronomy, Telescopes, Cameras, Cassegrain Optics, Electrophotometers, Mirrors, Spectrographs, Variable Stars
Scientific paper
Two topics of research, namely extragalactic and variable star studies represent the main attitudes of astronomical work at the Helwan Observatory. The 74 inch telescope at Kottamia (476 m, 2h.12, 29°.93 N) some 60 km to the east of Cairo is the main instrument. Some other auxiliary equipment (Cassegrain and echelle spectrographs, Westinghouse and Japanese cameras and photoelectric photometer) can be attached at both Cassegrain and Newtonian foci.
Gamal El Din A. I.
Issa I. A.
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