Jump to content


Supernova AT2021yaf

Mike JW

Recommended Posts

I saw this SN in the list on the Skytools 4 software and the other night when looking at SN 2021wuf in NGC 6500 (see earlier post by Martin) I gave it a go.

At the time I had no idea if I was in the right area until today when I have spent time cross referencing to star charts/DSO images.

There were so many stars in view that there was no way I was going to spend observing time tracking it down. It does not lie in an obvious galaxy. Looking at DSO images of the area it would seem to coincide with a faint tiny fuzz patch.

What a lark and test of scope alignment and syncing to actually get this "little white dot" in a view full of other little white dots.



  • Like 4
Link to comment
Share on other sites

A very satisfying lark though! I'm personally loathe to take automation too far. It would be no fun to select an object and have it perfectly centred and labelled each time...

I see you using linear stretch here which is perhaps why the host galaxy isn't visible?


Link to comment
Share on other sites

Nice capture but note that AT objects are not necessarily supernovae (in fact most probably are not). To be confirmed as a supernova it needs to have spectrum taken. In this case it turns out to be a Cataclysmic Variable (a dwarf nova) in outburst in our own galaxy. You can see the classification on the Transient Name Server (where AT numbers are generated and where, if they do turn out to be supernovae, the name is changed to SN yyyyabc , the point at which it officially becomes a supernova





Edited by robin_astro
  • Like 2
  • Thanks 1
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.