TIMMI 2

TIMMI2 Observing Modes

Imaging Spectroscopy Polarimetry Miscellaneous Imaging Available Filters   Filter Name Blue cut (mm) Blue (50%) Red (50%) Red cut (mm) L 3.60 3.73 4.11 4.13 M 4.30 4.36 4.91 4.99 N1 7.79 7.99 9.20 9.46 N2 9.43 9.74 11.33 11.78 N7.9 7.18 7.42 8.11 8.62 N8.9 7.90 8.29 9.07 9.46 N9.8 8.76 9.10 10.02 10.49 N10.4 9.46 9.80 10.82 11.21 N11.9 10.61 10.99 12.19 12.50 SIV   10.3752 10.5432   SiC 10.13 10.67 12.93 13.34 N12.9 11.54 11.62 12.79 12.98 [NeII] 12.57 12.68 12.90 13.02 Q1 17.04 17.35 18.15 18.48 Q2 ( 18.75) 18.321 19.176

• transmission has been measured with a monochromator in the lab under TIMMI-2 operation conditions
• approximate transmission curves are available here
• additional filters pending: narrow band Q2 (early 2002)

Scales

Spectroscopy

Available Grisms:

10 mm low-resolution grism for N-band spectroscopy:

• range: 7.56 - 14.04 mm
• resolution: 0.02 mm/pixel (l/Dl = 160)
• example spectrum: HD4128

20 mm low-resolution grism for Q-band spectroscopy:

• range: 14.55 - 24.15 mm
• resolution: 0.03 mm/pixel (l/Dl = 130)

Wavelength calibration tables are available here

Atmospheric transmission values: in Q-Band and in N-band here

Available aperture sizes:

.All filters are in principle available for polarimetry: please check status with onsite support astronomer.

Spectro-polarimetry: will be available for P73

Lunar Ocultations

Available for P72

Miscellaneous