Deep narrow band interference filter photographs of selected extended planetary nebulae

Details Deep narrow band interference filter photographs of selected extended planetary nebulae Deep narrow band interference filter photographs of selected extended planetary nebulae

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26as...88..245r&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 88, no. 2, May 1991, p. 245-254.

Astronomy and Astrophysics

Astrophysics

4

Astronomical Photography, Interstellar Matter, Narrowband, Optical Filters, Planetary Nebulae, Emission Spectra, H Alpha Line, Line Spectra

Scientific paper

Narrow band interference filter photographs in H-alpha, forbidden S II (6717 + 6731 A), forbidden N II (6584 A), and forbidden O III (4363 A) lines of three extended PNe are shown. The nebulae photographed this way were: Abell 13, We Sb 1 and De Ht 5. Also, the two-dimensional forbidden N II line (6584 A)/H-alpha and the forbidden S II line/H-alpha ratios of De Ht 5 and the forbidden N II line (6584 A)/H-alpha ratio of Abell 13 were obtained from these photographs.

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