Question: "For some channels from the beginning of the band,
I get visibility values far away from where we would expect them and in many
cases they have negative values​​. What is happening?"

Answer: The strange visibilities are usually at the very beginning of the K band, where there is some contamination by the H band (meaning that the fringe pattern given by the P2VM cannot be reliable). You should restrict your domain to a smaller wavelength range. Checking the P2VM with amdlibShowP2VM would be a good idea to see the possible overlap.

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If you do not see any changes after some clicks into the filechoosers, some users get a better display using a different color map.
cp .../yorick/g/heat.gp $HOME/.gist/gray.gp
After this change, the selected files should be underlined or with a different background color.

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If you encouter the error "another instrument with same name already exists", you probably have built one settings with multiple oifits files. It is actually one limitation of the internal engine which should be fixed soon. To be able to fit such settings files, you actually need to modify manually the name INSNAME keywords of each given files. It must be done in all the OI_VIS, OI_VIS2, OI_T3 plus the corresponding OI_WAVELENGTH tables. Each values must be different to be fitted by LITpro. Apologize for the actual limitation. We are working on this issue for the next releases.

An alternative is to merge multiple oifits files into a single file. This can be done using the oifitslib software available at the following address: ftp://ftp.mrao.cam.ac.uk/pub/jsy1001/oifitslib/oifitslib.tar.gz

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If you encounter this problem for the "plot 1D chi2" and "plot 2D chi2" actions, you probably have bounds problems. Please check that your parameters have compatible minimum and maximum limits.

This bug affects the Version 1.0.4.

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The maximum size is:
- 240 minutes for RA range;
- 30 degrees for DEC range.

By the way, no bigger values can be entered in the query fields !

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Visit http://www.jmmc.fr/amberdrs. You will also find other external urls to get more informations about AMBER.

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Visit http://www.jmmc.fr/searchcal

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Visit http://www.jmmc.fr/aspro

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Visit http://www.jmmc.fr/litpro

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