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tokens: This paper used data from the JCMT Survey M16AL001 awarded by the East Asian Observatory. We thank the JCMT staff for carrying out the observations and contributions to the data reduction. We greatly thank K. Hodapp for help with the ephemeris for EC 53. We also thank S. Lee for help with the SED fitting. The authors appreciate valuable comments by A. Pon, A. Scholz, H. Kirk, Y. Aikawa, V. Chen, and C. W. Lee. This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) (grant No. NRF-2015R1A2A2A01004769) and the Korea Astronomy and Space Science Institute under the RD program (Project No. 2015-1-320-18) supervised by Ministry of Science and ICT. G.J.H. is supported by general grant 11473005 awarded by the National Science Foundation of China. D.J. is supported by the National Research Council of Canada and by an NSERC Discovery Grant. S.M. is partially supported by an NSERC graduate scholarship. M.K. was supported by by Basic Science Research Program through the National Research Foundation (NRF) of Korea funded by the Ministry of Science and ICT (No. NRF-2015R1C1A1A01052160). The JCMT is operated by the East Asian Observatory on behalf of The National Astronomical Observatory of Japan, Academia Sinica Institute of Astronomy and Astrophysics, the Korea Astronomy and Space Science Institute, and the National Astronomical Observatories of China and the Chinese Academy of Sciences (Grant No. XDB09000000), with additional funding support from the Science and Technology Facilities Council of the United Kingdom and participating universities in the United Kingdom and Canada. This research has made use of the Canadian Astronomy Data Centre operated by the National Research Council of Canada with the support of the Canadian Space Agency. This research used the services of the Canadian Advanced Network for Astronomy Research (CANFAR, specifically VOSpace), which in turn is supported by CANARIE, Compute Canada, University of Victoria, the National Research Council of Canada, and the Canadian Space Agency. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Maunakea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. Facility: JCMT (SCUBA-2) (Holland et al. 2013 ). Software: Starlink (Currie et al. 2014 ), Astropy (Astropy Collaboration et al. 2013 ), Python version 2.7, APLpy (Robitaille Bressert 2012 ).