Jump to content

SkySurveyBanner.jpg.21855908fce40597655603b6c9af720d.jpg

Recommended Posts

Tonight I observed the nova with 11x70 binoculars. It looked around the same brightness that it has for the past few nights.

With the more transparent skies this evening M52 showed quite nicely with the binoculars.

 

Link to comment
Share on other sites

My first look for a few days. 30 x 30 sec stacked in ASTAP.

Photometry (such as it is in my hands) gives a magnitude of 8.42, holding up nicely. I was surprised to see it still outshining it's neighbour.

 

2094451739_NOVA_CAS2021-04-0930x30LEQMODHEQ56ZWOASI178MC_stacked.thumb.jpg.3a35b7a8f61335cb7715bd1e68c837ed.jpg

  • Like 4
Link to comment
Share on other sites

9 minutes ago, John said:

Just had another look at this nova. Still looking around magnitude 8.0 or thereabouts.

 

Had it about that last night John. Not checked tonight yet.

This one is certainly hanging around 👍🏻

  • Like 2
Link to comment
Share on other sites

10 hours ago, laudropb said:

Do we know if this a classic nova Jeremy involving a white dwarf and a close companion main sequence star ?

I assume so, but not seen any reports. White dwarf primary, certainly but not seen spectral classification of the 2ndary 

  • Like 1
Link to comment
Share on other sites

10 minutes ago, JeremyS said:

I assume so, but not seen any reports. White dwarf primary, certainly but not seen spectral classification of the 2ndary 

My simple understanding of the way that novae work is that the white dwarf is accreting matter from the secondary star so I wonder if that, over time, changes the spectral classification of the latter ?

I also wonder if this one will result in a nova remnant ?

I'm probably over-simplifying a complex process :rolleyes2:

 

Edited by John
  • Like 2
Link to comment
Share on other sites

1 hour ago, John said:

My simple understanding of the way that novae work is that the white dwarf is accreting matter from the secondary star so I wonder if that, over time, changes the spectral classification of the latter ?

I also wonder if this one will result in a nova remnant ?

I'm probably over-simplifying a complex process :rolleyes2:

 

During the eruption the spectrum will be dominated by the hot accretion disc rather than the stars. Need a quiescent spectrum to get the stars. even that can be tricky 

The nova eruption certainly blows off gas into space so there will be a remnant shell. Might take a while to become large enough to be visible on large pro scopes, if at all

  • Like 1
  • Thanks 1
Link to comment
Share on other sites

My first peek in a good while.

Poor sky, high cirrus illuminated by the waxing gibous Moon! Surprised I got anything. 22 x 30 sec exposures, live stacked in ASTAP. Photometry by my hand reports a magnitude of 9.1 but there looks to be vistually no difference between now and my last image.

L_2021-04-22_23-05-34_Bin1x1_30s.thumb.jpg.3eac9b1d5d7eda7e6fe12efabceec61b.jpg

 

Edit: Here is a more fully processed version. Still limited by the poor conditions:

image.thumb.png.da15a2895364a0bf50794c8a9734e980.png

 

Edited by Paul M
  • Like 3
Link to comment
Share on other sites

I have just drawn a light curve of the nova until today (Apr 25). It has maintained its brightness very well and is still mag 7.8 to 8.0.

Keep watching as it will fade at some point!

Data are from the BAA Variable Star Section and the AAVSO databases. The pink horizontal line at the bottom is what is thought to be the nova's quiescent magnitude

1514566895_NovaCas2021LC.png.d6cbea286d5b89b511dc84d4f57d0c79.png

  • Like 6
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.