GONG Hα Instrument
GONG Hα Instrument
GONG Hα Instrument
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Mechanical Status/Issues• Installation space checked at all sites.• Prototype built and installed.• Simplified beamsplitter mount designed.• Waiting for production go/no-go decision.• New, shortened version (filter problem)• Dust shield design TBD (not critical).September 22, 2009 <strong>GONG</strong> H-alpha Review 41