Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998pasa...15...33p&link_type=abstract
Publications Astronomical Society of Australia, vol. 15, no. 1, p. 33-37
Astronomy and Astrophysics
Astronomy
24
Instrumentation, Photometric Techniques
Scientific paper
We briefly describe technical aspects and specifications of the new UKST H-alpha interference filter which is probably the largest of its kind available in astronomy. Preliminary exposures show that the filter gives excellent imaging with high overall transmission and uniformity at H-alpha wavelengths. This is achieved over a circular area of about 305 mm diameter or about 5.7 degrees (the so called `clear aperture'). The prospects for the new UKST H-alpha survey of the Southern Milky Way with this new filter are excellent.
Bland-Hawthorn Jonathan
Parker Quentin A.
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