Free course

Astronomy with an online telescope

The standard view of this forum does not always work well with assistive technology. We also provide a simpler view, which still contains all features. Switch to simple view.

You need to be enrolled on this OpenLearn unit before you can participate in this forum. Enrol now.

Picture of Paul Mckay

Paul Mckay Post 1

22 Dec 2020, 20:08

Binary Variable EB1

Hi Alan

I have completed the course except for the Week 8 and the Final Badge Quiz which I will delay until I have revised the course from my notes. It has been fascinating, although I must confess I was familiar with the basics in the first half of the course, having passed GCSE Astronomy in 2018 and several other Open Learn astronomy courses. I have also casually studied the early editions of the 2 excellent textbooks for OU Certificate in Astronomy, namely Sun and Stars and Galaxies and Cosmology.

I have looked for my chosen binary star EB1 on Stellarium using the co-ordinates and found nothing but empty space even with the maximum magnitude value of 21. The closest bright star seems to be epsilon Per. Are these stars just too dim or not significant enough to be shown in Stellarium?

Also what is the ISO rating of the camera used on the COAST telescope and the field of view. It could only image 2 of the main stars in M45.


Picture of Alan Cayless

Alan Cayless Post 2 (summarised) in reply to 1

23 Dec 2020, 15:17 Edited by the author on 23 Dec 2020, 15:18
Hi Paul; Thanks for your kind comments, and it's good to know that you've...
 [Expand all posts]

Take your learning further371

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 courses372.

If you are new to university level study, we offer two introductory routes to our qualifications. Find out Where to take your learning next?373 You could either choose to start with an Access courses374or an open box module, which allows you to count your previous learning towards an Open University qualification.

Not ready for University study then browse over 1000 free courses on OpenLearn375 and sign up to our newsletter376 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 prospectus371