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 Dennis Ramirez

Dennis Ramirez Post 1

6 Jan 2021, 20:48

folded curve

I would like to ask why most of the folded curves are ploted 

in a graph of flux v phase? But that is not the case in the one we use.

I also would like to ask how long can I use the remote telescope after

 finishing the course?

Tnak you Dennis

Picture of Alan Cayless

Alan Cayless Post 2 (unread) in reply to 1

7 Jan 2021, 09:11 Edited by the author on 7 Jan 2021, 09:11

Hi Dennis;

The normal plot has each observation plotted against the date - but this means that the plot is spread out over many periods of the variable star.  The folded plot combines these into a single period, overlaying the data points to make an average curve for a single orbit of the stars.  The "phase" of a light curve refers to the time from the start of each period and on our plots we plot this in terms of days from the start of each period.

There's a more complete description here:

https://www.open.edu/openlearn/ocw/mod/forumng/discuss.php?d=6631#p24228

Your account will remain active for a few months, and there is some more information on what you can do after completing the course in the FAQ thread:

https://www.open.edu/openlearn/ocw/mod/forumng/discuss.php?d=6615#p24163

Alan

AOT_1

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