In recent VLTI/MIDI observations (see Leão et al. [Astron. Astrophys. 466, L1 (2007)] for more details), we collected N-band dispersed (7.5–13.5 μm, λ/Δλ=230) visibilities of RY Sgr using two telescope pairs: UT1–UT4 and UT3–UT4. We obtained 5 different baselines with 7 runs (see Fig. 1) under rather good atmospheric conditions. The data represent a snapshot obtained within June 2005.
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References
P. de Laverny, D. Mékarnia, Astron. Astrophys. 428, L13 (2004)
I.C. Leão, P. de Laverny, O. Chesneau et al., Astron. Astrophys. 466, L1 (2007)
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Leão, I.C., de Laverny, P., Chesneau, O., Mékarnia, D., De Medeiros, J.R. (2009). The Closest Dusty Cloud Ever Detected Around a R CrB Variable Star Using the VLTI/MIDI Instrument. In: Moorwood, A. (eds) Science with the VLT in the ELT Era. Astrophysics and Space Science Proceedings. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-9190-2_22
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