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Ron Arbour has asked me to post this message in his behalf:
The object AT2021 recently discovered in NGC 4631 has been classified as a Luminous Red Variable which is a sub group of Intermediate Luminosity Optical Transients. This group included Intermediate Luminosity Red Transients and intermediate Red Novae among others and bridged the gap between Novae and Supernovae. The first discovery and hence archetype of all these objects was discovered by an amateur and member of the Association, namely myself. A paper on the object was published in the Journal.
J.Br.Astron.Assoc. 126, 3, 2016
Further doubt cast on the ALMA detection of phosphine in Venus’s atmosphere: “Complications in the ALMA Detection of Phosphine at Venus”
I’ve just heard from Tonny Vanmunster that both a recording of the webinar and the PowerPoint slides used can be accessed from the Peranso website.
Highly recommended.
Yes the webinar was very good, Lars. I’m pretty impressed with Peranso 3. I’m looking forward to the forthcoming updates with the extra functionality that Tonny was demonstratino.
Not sure if it was recorded. I see a couple of folks have asked Tonny, but not seen his reply yet
Yes you can download all the data from both databases. There is a link to the VSS db under “observations” at the top right of this page.
There is an updated light curve on the VSS website: https://britastro.org/vss/
Your dara show just how active this nova is!
Graeme,
you are welcome to write a note or article containing ToM’s for the VSS Circular. Or you can send ToM measurements directly to Des Loughney and he will include in the Eclipsing Binary News section. The VSSC is sent to Krakow.
Jeremy
Hello Tony,
I am not an EB observer so I haven’t used that database. You could drop a line to Des Loughney, VSS EB officer (contact details in the VSS Circular) to see if he knows.
Jeremy
There’s a Forum thread here Tracey: https://britastro.org/node/10166
Was this also with your 80mm frac, Graeme? Really shows what’s possible with a small scope plus CCD.
I wouldn’t worry too much Darren. For photometry try what you have at hand first before shelling out on more stuff. If you want to go to the nth degree in photometry you can try something else later. If it helps, I generally run my CCD camera 2 x 2 binned for photometry. There is nothing inherently wrong with binning.
I just updated the LC with data up to 2021 Jan 2. The last data points hint that might be beginning to fade a bit faster. Keep watching!
When making this plot, I was struck by the undulations in the LC at ~daily intervals. I’ve not looked into whether these are artefacts or genuine.
A quick reminder that we are only a few days away from the next superoutburst of IX Dra (perhaps 3 to 7 days). Hence observations are encouraged.
I had it at mag 17.1 last night (NY Eve) – just declined from the last “normal” outburst”. The next outburst could well be the super…keep watching!
Nice work Hugh.
There is also a paper by Mark Kidger on Betelgeuse in the December Journal.
The original Betelgeuse Forum thread you mentioned is here.
Here’s a light curve of the Nova which Philip Jennings just showed at the BAA meeting.
Prepared yesterday (Dec 4). Latest obs early this AM put it at mag 8.9
