Astronomy with an online telescope
Astronomy with an online telescope

Start this free course now. Just create an account and sign in. Enrol and complete the course for a free statement of participation or digital badge if available.

Free course

Astronomy with an online telescope

3.3 Request further images

If you have time this week you can add additional data points to the light curve by requesting further images using the exposure time that you determined in Activity 2. When these return from COAST, process them in the same way. This will give you another observation of the variable star on a different date and time, which you can add to the light curve.

You may also want to check back from time to time to see if other participants have added any new points. As more data points are added, the light curve will continue to build up.


Take your learning further

Making the decision to study can be a big step, which is why you'll want a trusted University. The Open University has 50 years’ experience delivering flexible learning and 170,000 students are studying with us right now. Take a look at all Open University courses.

If you are new to university level study, find out more about the types of qualifications we offer, including our entry level Access courses and Certificates.

Not ready for University study then browse over 900 free courses on OpenLearn and sign up to our newsletter to hear about new free courses as they are released.

Every year, thousands of students decide to study with The Open University. With over 120 qualifications, we’ve got the right course for you.

Request an Open University prospectus