IRTS/FILM CH1(155 micron Continuum) Map

Ver.1.0 01/Dec/2000 by K.Okumura
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The continuum maps at 155 micron are observed by IRTS/FILM
with an 8 arcmin by 13 arcmin beam size. The spactral resolution
in the continuum channel is lambda/delta_lambda = 130.

The absolute uncertainty at 155 micron is in the range of +26 and -19%.
It was obtained from the pre-launch tests of the FILM. On the other hand,
The relative error of the flux density maps is estimated to be about 
6e-7 W/m2/sr (3-sigma). The detector noise was only 2e-7 W/m2/sr occupied.
The major part of the error is due to insufficient correction in the 
responsivity changes of the FILM detectors (Ge:Ga photoconductor), which
are occured in passages through the radiation regions and hits of cosmic rays. 
The detector noise was about 2e-7 W/m2/sr.

The fits plate files cover a 13x13 degrees and are sampled in 4 arcmin bins  
in the galactic coordinate on the gnomonic projection as follows:

Plate Number
North-Scan:	from ns01 to ns37
South-Scan:	from ss01 to ss53

Plate Type
flux density map  :	ss??_filmc1_flux.fits
the number of data:	ss??_filmc1_no.fits
error map         :	ss??_filmc1_error.fits