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Optical Engineering • Open Access

Large-field high-resolution mosaic movies
Author(s): Robert H. Hammerschlag; Guus Sliepen; Felix Bettonvil; Aswin P. Jägers; Peter Sütterlin; Yong Lin; Sara F. Martin; Olga Panasenco; Eugene Romashets

Paper Abstract

Movies with fields-of-view larger than normal, for high-resolution telescopes, will give a better understanding of processes on the Sun such as filament and active region developments and their possible interactions. New active regions can serve as an igniter of the eruption of a nearby filament. A method to create a large field-of-view is to join several fields-of-view into a mosaic. Fields are imaged quickly, one after another, using fast telescope-pointing. Such a pointing cycle has been automated at the Dutch open telescope (DOT), a high-resolution solar telescope located on the Canary Island La Palma. The number and positions of the subfields are calculated automatically and represented by an array of bright points in the guider image which indicates the subfield centers inside the drawn rectangle of the total field on the computer screen with the whole-sun image. Automatic production of flats is also programmed. For the first time, mosaic movies were programmed from stored information on automated telescope motions. The mosaic movies show larger regions of the solar disk in high resolution and fill a gap between available whole-sun images with limited spatial resolution of synoptic telescopes including space instruments and small-field high-cadence movies of high-resolution solar telescopes.

Paper Details

Date Published: 31 January 2013
PDF: 11 pages
Opt. Eng. 52(8) 081603 doi: 10.1117/1.OE.52.8.081603
Published in: Optical Engineering Volume 52, Issue 8
Show Author Affiliations
Robert H. Hammerschlag, Leiden Observatory (Netherlands)
Guus Sliepen, Royal Swedish Academy of Sciences (Netherlands)
Felix Bettonvil, Leiden Observatory (Netherlands)
Aswin P. Jägers, Utrecht Univ. (Netherlands)
Peter Sütterlin, Royal Swedish Academy of Sciences (Netherlands)
Yong Lin, Univ. I Oslo (Norway)
Sara F. Martin, Helio Research (United States)
Olga Panasenco, Helio Research (United States)
Eugene Romashets, Helio Research (United States)


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