Quote:
Originally Posted by theodog
Cheers Renormalised.
Unfortunately my cataloge states that "No variability detected (stable)".
But it's only early days and I have much to learn. I need to image more classes of stars to nail this technique.
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I'd find that a little incredulous....nearly all A, F and G class giants show some sort of variability. Unless it's in a quite period, of course. Polaris, for example, just went through one of these phases. It's a classic Cepheid, but the periodicity and the luminosity changes almost disappeared at one stage. They became so small it was almost impossible to measure them, but now it's slowly coming back to normal. Probably was going through some state in its evolution into a red supergiant, at a later stage.