SIMULTANEOUS OPTICAL AND IR MONITORING OF THE SEYFERT NUCLEUS NGC-7469

We present results of a four night's optical monitoring of the Seyfert nucleus NGC7469 in search for microvariability. At visible wavelength s we used the same instrumentation, data and error analysis as in a pr evious monitoring (Dultzin-Hacyan et al. 1992 -paper 1-) and found (as opposed to the result of paper 1) a negative result: no microvariabil ity. During two nights, simultaneous monitoring was done at 1.65 mum ( H band) and significant (7.8sigma) variations with DELTA H approximate ly 0.39 mag were observed in DELTAt = 1.65 hrs during the first night and marginal evidence (2.5sigma) of variability with DELTAH = 0.12 mag in DELTAt = 1.04 hrs during the second night. This observational resu lt should be taken with caution and it is important to confirm it with future observatios, although this may not be easy, due to the transie nt character of microvariability. We briefly discuss some models.