Variable stars are an important topic of study for amateur and professional astronomers alike. Variable stars are those whose apparent brightness (or magnitude) changes over time, usually due to a periodic change in their luminosity.

There is a wide variety of variable stars, from long-period variables to Cepheid variables, and they can be observed with even modest equipment. As such, these stars make great targets for amateur astronomers who want to do some deep-sky observing.

In this blog post, we’ll take a look at a few of the most interesting variable stars that amateur astronomers should consider targeting.

R Coronae Borealis (RCB)

R Coronae Borealis is one of the most famous variable stars due to its unique variability pattern. This star normally fades away into obscurity before suddenly brightening again over the course of several months or years.

This behavior has puzzled astronomers since it was first discovered in 1795, but recent research suggests that it could be caused by dust clouds obscuring the star’s light periodically.

Whatever the cause may be, RCB is a fascinating target for amateur astronomers and should not be missed!

Miras

Mira-type variables are some of the longest-period variables known, with periods ranging from 80 days up to more than a thousand days.

These stars have large amplitudes (the difference between maximum and minimum brightness) and can easily be observed with binoculars or modest telescopes.

The iconic Mira Ceti is probably the best-known Mira-type variable; other notable examples include U Orionis and R Leonis Minoris.

Cepheids

Cepheid variables are intrinsically brighter than other types of variable stars, making them easier to observe even with smaller telescopes or binoculars.

These stars have periods ranging from 1 day up to 100 days and tend to have regular periodicity; this makes them ideal targets for studying stellar pulsations as well as measuring interstellar distances in our Milky Way galaxy!

Notable examples include Delta Cephei (which was actually used to discover the period-luminosity relation), Polaris (the North Star), and SZ Tau in the Taurus constellation.

Conclusion

Variable stars offer an exciting opportunity for amateur astronomers who want to explore beyond our solar system.

From long-period variables like Miras and semi-regulars like R Coronae Borealis, there are plenty of interesting targets out there waiting to be observed!

With some research and practice using your telescope or binoculars, you too can join in on the fun by tracking down some variable stars yourself! Happy hunting!