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This is a HADS (High Amplitude Delta Scutii) star the I am observing monthly for an astronomer in Belgium who is doing a long term project on HADS stars. This one is multiple 2 min exposures and analysed with free software AstroImageJ.

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Dave

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From 13.2-13.7 mag at 4 hr intervals it seems, (unless I’m misinterpreting the chart) Swiss watch like!

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2 minutes ago, Sunshine said:

From 13.2-13.7 mag at 4 hr intervals it seems, (unless I’m misinterpreting the chart) Swiss watch like!

Yes it's period is 3.20178 hours. It is the period that is being studied, I believe. There is the possibility of multiple periods.

Dave

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Great work Dave, way beyond what most of us are doing.

Looking forward to your exoplanet talk at CPAC.

Ed.

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