Double Stars

Delta Cephei


Delta Cephei A is a pulsating variable in Cepheus, a star which is very important when it comes to calculating cosmic distances.

delta Cephei

Cor Caroli in Canes Venatici


alpha Canum Venaticorum, better known as Cor Caroli in Canes Venatici. A star with a very strong Zeeman-effect.

Cor Caroli

Castor (alpha Gem)


Castor (alpha Geminorum), again a very beautiful multiple star (triple) in Gemini. The views of the A and B components were stunning in the 12-inch, including the diffraction spikes :))

Castor