Preliminary results on the calibration and color terms of the new
Mauna Kea IR filter set have been determined from a small data set
obtained on 12 March 1999 using NSFCam at the 0.15 arcsec plate scale.
The plot below presents the difference between the new filter set (MK)
and the standard JHKK' filter set as a function of IR color for 5
stars (4 UKIRT faint standards and an A0V star).
JPEG plots and ascii files of the transmission profiles for the MK
filters are also available.
The relationships between the new filters and the old ones can be summarized as follows:
|J (MK) - J||=||0.142 (± 0.013)||-||0.073 (± 0.030) * (J-K)|
|H (MK) - H||=||-0.213 (± 0.016)|
|K (MK) - K||=||-0.081 (± 0.026)||-||0.054 (± 0.139) * (H-K)|
|K'(MK) - K'||=||-0.287 (± 0.024)||-||0.073 (± 0.131) * (H-K)|
|K (MK) - K||=||-0.087 (± 0.020)|
|K'(MK) - K'||=||-0.293 (± 0.021)|
We have additional data sets and will provide updates to this page as these data are reduced and analyzed.
Return to IRTF Home Page
Maintained by Bobby Bus (email@example.com)