TNTCAM MARK II: a new mid-IR array imager/polarimeter

Details TNTCAM MARK II: a new mid-IR array imager/polarimeter TNTCAM MARK II: a new mid-IR array imager/polarimeter

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3354..853k&link_type=abstract

SPIE Proc. Infrared Astronomical Instrumentation, Vol. 3354, p. 853. Edited by A. M. Fowler.

Astronomy and Astrophysics

Astronomy

3

Polarimetry, Mid-Infrared, Imaging, Cryogenic, Motors, Dewar, Adaptive

Scientific paper

We present design considerations for a mid-IR imaging polarimeter, TNTCAM2. Using a 256 by 256 Si:As BIB array, the camera will be unparalleled as an polarimeter/imager by any instrument currently in use at these wavelengths. Thanks to NSF support, access by the general astronomical community will be arranged. In polarimetry mode, TNTCAM II will be sensitive to linear polarizations as small as 0.2 percent. Polarized emission from cosmic sources will be modulated at a frequency high enough to remove atmospheric and system noise fluctuations. Dewar design and the optical system are discussed, including CCD assisted digital shift and ad tip- tilt correction and use of a rotating entrance window assembly allowing on-the-fly f-ratio adjustment and optimal throughput across the entire 5-25 $mu@m band. The camera can contribute to the understanding of YSOs(Young Stellar Objects) and evolved stars, obtaining high resolution mid-IR observations of dusty environments immediately surrounding these objects. In imaging mode mosaics of extended objects can be made in 2' by 2' sub-fields. In polarimetry mode, B-fields in YSOs can be probed by dust emission from hot cores, incidentally constraining grain alignment scenarios in young stellar environments.

Affiliated with

Also associated with

No associations

Rating

TNTCAM MARK II: a new mid-IR array imager/polarimeter does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with TNTCAM MARK II: a new mid-IR array imager/polarimeter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and TNTCAM MARK II: a new mid-IR array imager/polarimeter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1539488