Fig. 2.
COBE 2.2 μm data of the ONC plotted in equatorial coordinates (CSC; COBE quadrilateralised spherical cube projection). The × marker denotes the position of the ONC with the surrounding red square signifying a 5′ width, which is the estimated angular size of the ONC. The size of a DIRBE pixel is 0.32°. The blue circle highlights the four pixels selected for the flux determination.
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