Low Resolution Spectrum of the Orion Nebula in the 60–300 μ Range

C. D. Swift, F. C. Witteborn, E. F. Erickson, L. J. Caroff, G. C. Augason, A. J. Mord, L. W. Kunz, L. P. Giver
1973 Symposium - International astronomical union  
Airborne observations of the Trapezium region of the Orion Nebula in the 60–300μrange have been made from 13.7 km altitude using a Michelson interferometer with the Rice University 12-in. Flying Infrared Telescope. Fourier analysis of five interferometer scans provided spectra with resolution ranging from 7 cm–1to 20 cm–1. These spectra were compared with lunar spectra taken with the same instrument at the same altitude to correct for instrumental and atmospheric effects. A weighted combination
more » ... eighted combination of these scans provides a low resolution spectrum. The radiation per unit frequency interval at 190μwas found to be at least 40% of that measured between 75 and 90μ.Neglecting possible features in the spectrum, its general shape is consistent with a blackbody near 70 K. The resolution is inadequate to resolve spectral lines.
doi:10.1017/s0074180900054619 fatcat:dgjfytlybzdrpaqzagaisvp554