Narrow-band Imaging In Ihe Cn Band Head

Details Narrow-band Imaging In Ihe Cn Band Head Narrow-band Imaging In Ihe Cn Band Head

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spd....37.0717u&link_type=abstract

American Astronomical Society, SPD meeting #37, #7.17

Astronomy and Astrophysics

Astronomy

Scientific paper

We report on results of an observing campaign intended to revive an old CN Lyot filter originally built by Bernhard Lyot himself, but modified at Sacramento Peak. The filter has two band-width settings of 0.025 nm and 0.05 nm which can be fine tuned thermally. We characterise the passband of the Lyot filter and the employed prefilter based on osbervations performed with a spectrograph. We also performed an imaging experiment in an attempt to obtain data visualizing the imaging capability of the filter. Our results show that the CN filter is in a surprisingly good condition and is most suited for observations to verify theoretical predictions about the brightness of magnetic elements in the CN bandhead at 388.3\,nm.

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