On October 6, 1997 at 05:16:57.44 UTC (Oct 5, 21:16:57.44 PST) BATSE detected GRB 971006 (Trig. 6414). LOTIS received the Original GCN coordinates of RA=241.14°, Dec=49.23° at 05:17:06.6 UTC, approximately 9.2 seconds after the trigger. After slewing to the coordinates (~7.9 s) LOTIS began imaging the Original GRB position at 05:17:14.5 UTC, just 17.1 seconds after the BATSE trigger.

The plot above illustrates the LOTIS response time to GRB 971006. The BATSE light curve ( > 20 keV) shows the burst with a duration of ~150 s. The grey area represents the integration time (10.0 s) of the first LOTIS image. LOTIS began imaging during prompt gamma-ray emission and continued to image the area for the remainder of the night.

The plot above illustrates the LOTIS coverage of the Final BATSE error circle centered at RA=249.79°, Dec=53.29°, approximately 6.8° from the Original coordinates. The inner and outer ellipses represent the BATSE 1-sigma (0.6° statistical and 1.9° systematic errors) and 3-sigma error circles. The narrow arc represents the IPN annulus calculated using data from the BATSE and Konus instruments. The annulus is centered at RA=166.838°, Dec=15.53° and has a radius and width of 74.162° and 0.051° respectively. The pseudo-rectangles represent the area covered by the LOTIS cameras and each of the dots is a stellar object detected by the system.