GONG Hα Instrument

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Outline• Overview• Optical design• Hα Filter• Camera• Mechanical• Remaining issuesSeptember 22, 2009 GONG H-alpha Review 2
Instrument Design Goals• No significant impact on normal GONGdata or operations.• Provide an Hα image 1 per min using full 7cm aperture of GONG instrument.• Match ISOON format.• Rapid transfer of image to AFWA via theInternet.September 22, 2009 GONG H-alpha Review 3
Page 1: GONG Hα InstrumentJ. Harvey & GONG
Page 5 and 6: Prototype Optical DesignPBSFCCDL1L2
Page 8 and 9: Field Curvature & DistortionSeptemb
Page 10 and 11: Optics Summary• Simple system mee
Page 12 and 13: Hα Filter Selection• Considered
Page 14 and 15: Filter Test SetupCMOScamera,lens an
Page 16 and 17: Sample Filter HWHM•Fit Fabry-Pero
Page 18 and 19: Solar Test Setup• Rooftop light f
Page 20 and 21: Filter Status• 10 filters on orde
Page 22 and 23: Filter StatusC:\Documents andSettin
Page 24 and 25: September 22, 2009 GONG H-alpha Rev
Page 26 and 27: Filter Concerns• Delivery.• Wav
Page 28 and 29: CCD Camera Requirements 2• Robust
Page 30 and 31: Camera Tests• Tested cooled and u
Page 32 and 33: Camera Dark Noise vs Exposuredark n
Page 34 and 35: Camera Noise vs LightNoise vs Signa
Page 36 and 37: Camera Results• Cameras show expe
Page 38 and 39: Mechanical Requirements• Simple i
Page 40 and 41: Sled DetailSeptember 22, 2009 GONG
Page 42: Remaining Issues• Optics- Quality

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