[AAVSO-HEN] GRB 070419A, Optical observations

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The following is a GCN Circular circulated via the AAVSO network.
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TITLE:   GCN CIRCULAR
NUMBER:  6320
SUBJECT: GRB  070419A, Optical observations
DATE:    07/04/19 19:36:25 GMT
FROM:    Shashi Bhushan Pandey at ARIES, INDIA  <shashi at aries.ernet.in>

S. B. Pandey, Rupak Roy and Saurabh Sharma (ARIES Nainital), on behalf of larger
Indian GRB collaboration

Optical afterglow candidate (GCN 6304) of GRB 070419A, localized by SWIFT
(GCN 6302, trigger 276205), was monitored from ARIES Nainital, India
using 1-m telescope in R_c and I_c filters around 4 hours after the burst.
The total exposure given in R_c filter was 300sec*6 in good sky conditions.
Photometry of the stacked R_c frame poses an upper limit of ~22 mag (around 4.3
hours after the burst) at the location of OT in comparison to nearby
USNO-B1.0 star (GCN 6306).
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