TITLE:   GCN CIRCULAR
NUMBER:  37199
SUBJECT: EP240816a: BOOTES-6/DPRT optical upper limit
DATE:    24/08/17 22:15:46 GMT
FROM:    Youdong HU at INAF-OAB <huyoudong072@hotmail.com>

I. Perez-Garcia, E. Fernandez-Garcia, M.D. Caballero-Garcia, R. Sanchez-Ramirez, S. Guziy, S.-Y. Wu, A. J. Castro-Tirado and G. Garcia-Segura (IAA-CSIC), Y.-D. Hu (INAF-OAB), P. J. Meintjes and H. J. van Heerden (UFS), A. Martin-Carrillo and L. Hanlon (UCD), C. J. Perez del Pulgar (UMA) and D.-R. Xiong (YNAO) on behalf of a larger collaboration, report:

Following the detection of EP240816a by EP-WXT (Yang et al., GCNC 37188), the BOOTES-6/DPRT 0.6m robotic telescope at Boyden Observatory in Maselspoort (South Africa) observed the fast X-ray transient location starting on Aug. 16, 16:25 UT (~ 13 hrs after trigger) in different optical bands. No new optical source is detected on the co-added images (6 x 120 s, clear filter) within the EP error box down to 19.8 mag.  Further imaging is ongoing.

We thank the staff at Boyden Observatory for their excellent support.