1. Department of Physics & Astronomy, East Tennessee State University , Johnson City TN 37614 , USA
2. Department of Physics & Astronomy, University of Toledo , Toledo OH 43606 , USA
3. NSF’s NOIRLab/US-ELTP , 670 N. Aóhoku Place, Hilo, Hawaií 96720 , USA
4. Département dePphysique, Université de Montréal , C.P. 6128, Succ. C-V, Montréal, QC H3C 3J7 , Canada