30 Nov 2005 User Committee 1

Instruments: NAC

30 Nov 2005 User Committee 2

Instruments: NAC

30 Nov 2005 User Committee 3

NAC spectroscopy

• First-light spectra taken 1083-4666nm

• Four guest observing runs: A. Clark, D. Deming (2231nm), J. LoPresto (1600nm), C. Walker (1565nm)

30 Nov 2005 User Committee 4

NAC: X1.8 Flare 1083nm

30 Nov 2005 User Committee 5

NAC: X1.8 Flare 1083nm

30 Nov 2005 User Committee 6

NAC: X1.8 Flare 1083nm

30 Nov 2005 User Committee 7

NAC hardware issues

• Temperature drift in dewar (0.1K/day)

30 Nov 2005 User Committee 8

NAC hardware issues

• Higher read noise on spectrograph (80 e-)

30 Nov 2005 User Committee 9

NAC hardware issues

• Cooler vibrations from drive electronics

30 Nov 2005 User Committee 10

NAC software issues

• No scripting capability in observing command • No parallel port communication to LCVR controller• No communication to AO stepper motor• Small disk partition (33 Gbytes) for storing data• No system backup• Individual frames are stored as files• No dark/flat corrected real-time image• No processing capability (i.e. real-time spectroheliogram,

LCVR calibration, focusing, etc)• Several annoying GUI bugs

30 Nov 2005 User Committee 11

NAC future plans

• Spectroscopy– 1-3 microns: working now– 3-5 microns: order new filters, work on

systematic noise issues

• Polarimetry– (1-3 microns): parts in house and currently

testing – goal is Fall 2006– (3-5 microns): line list identified, substrates

identified – goal is 2006 test, early 2007 data, full system 2008.

30 Nov 2005 User Committee 12

CCD Guider

• Goals:– Test and verify TCS upgrade– Replace old limb guiders– Allow pointing to 1.5 solar radii– Provide full-disk solar image

• Hardware: – One flat pickoff mirror between M1 and M2– Beamsplitter, H-alpha filter, 2 imaging lenses,

CCD camera and video, PC control computer

30 Nov 2005 User Committee 13

CCD Guider