Received a neat message from Andy, variable star expert.
I just ran a light curve at aavso.org and it looks like VX Sgr is right at its peak. I don’t think many apps do live tracking of variable star brightness, it may be running with ancient data or they might not even bother. Good catch, though.
I asked if this was nominal, the high brightness, or a blip. Shared my 16 Jun '20 image.
Cool.
I was using SkyTools 3 Pro through all this. Maybe I'll have a look in ST4V...
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Launched the new version of SkyTools Visual. Centred on VX Sgr. It shows a medium bright star. But in my photo, the variable is brighter than nearby HD 165689 (8.1). I'd argue it is a brighter by a hair than V4382 Sgr (8.0). It's definitely brighter than HD 165594 (8.0).
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Ha. Learned that HD 165689 is a double. It's sort of obvious now, looking at the image. The C star is to the north-east, well away. A is white; C is pale blue.
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