Observers’ Forum – British Astronomical Association

Delta Cephei’s companion variables

It is common knowledge that the prototype Cepheid variable star, delta Cephei, was discovered by John Goodricke in 1784 from

Hydra is the largest constellation in the sky, but also one of the faintest. Apart from its brightest star,

The constellation Cancer is another rather faint and indistinct constellation, with no really bright stars. It has one landmark deep-sky

Historical round-up In the year 1054, a new star appeared in the sky, close to the star known today as

In this article I look at a range of planetary nebulae visible in the autumn skies. The objects chosen go

Very often, the visual variable star observer will find that in the crowded Milky Way areas of the night sky,

Here Paul outlines an observing project that does not require elaborate equipment, so is well suited to BAA members who

Life is full of compromises and for astronomers in spring, we have warmer but shorter nights. British Summer Time began

As outlined in an article on the Section web pages (bit.ly/3rUB1Bo), there are two main aims of the CCD target

There is a chance of a moderately bright comet at the beginning of the year for southern-hemisphere observers. Northern-hemisphere observers