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GCN Circular 7929

Subject

GRB 080702A: MITSuME Akeno optical upper limits

Date

2008-07-03T00:07:25Z (16 years ago)

From

Nobuyuki Kawai at Tokyo Tech <nkawai@hp.phys.titech.ac.jp>

Y.A. Mori, T. Shimokawabe, Y. Kudou, H. Nakajima and N. Kawai (Tokyo
Tech) report on behalf of the MITSuME collaboration: 

The 3-color 50cm MITSuME Telescope at Akeno, Japan, responded to GRB
080702A (de Pasquale et al. GCN 7920Not found
 
 
) at 43 sec after the trigger,
though we obtained the first sky image 20 min after the trigger
due to the poor sky condition with frequent cloud coverage.  
In the co-added images of Ic, Rc, and g' bands, we did not detect any
afterglow candidate in the XRT error circle.  The 3-sigma limiting
magnitudes based on USNO-B1.0 (I-band) and NOMAD (R-band,g'-band)
stars are following.

Filter   start UT    end UT    Exposure   LimitMag   
---------------------------------------------------
  g'    12:16:37    13:11:35   23 x 60 s    16.6   
  Rc    12:16:37    13:11:35   23 x 60 s    17.7
  Ic    12:16:37    13:11:35   23 x 60 s    16.5
---------------------------------------------------