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Mr Ian David Sharp
ParticipantLooks like the system is bright at about 10.8 – 10.6 V mag and quite active. (Please ignore dim measurements – I think clouds interfered, so the whole ensemble was skewed. I will avoid submitting that to the database.) Can anyone confirm?
Max
Hi Max,
Looks like business as usual. Here are my V results from last night and also all my obs. since April. No major changes going on as far as I can tell.
Cheers
IanMr Ian David Sharp
ParticipantI took a series of 17 exposures early this morning from my C11 in Spain over an hour. It varied at between 16.7 and 16.8 in the V band. See attached.
Sorry, here’s the graph which I neglected to attach!
Mr Ian David Sharp
ParticipantHi all,
I took a series of 17 exposures early this morning from my C11 in Spain over an hour. It varied at between 16.7 and 16.8 in the V band. See attached.
I’ve also attached a screen shot with the field in AstroArt with the 5 ref and one check star I used. All the comp stars came from the AAVSO chart X36870MV.
WE have 2 entries in the BAA photometry database – one for TCP J20023703+3947002 and one for AT 2024lwu and I’ve uploaded my results to both. As Magnus mentions above, the AAVSO use TCP J20023703+3947002 in VSX.
Cheers
Ian.Attachments:
Mr Ian David Sharp
ParticipantGreat multi-band series, Ian!
Thanks Max!
It’s still very quiet…
Ian.
Attachments:
Mr Ian David Sharp
ParticipantWell, the outburst is definitely over, and much narrower that the previous one. See attached.
Cheers
Ian.Attachments:
Mr Ian David Sharp
ParticipantHi Max,
Here are my results from last night. I’ll try and get longer runs tonight.
Cheers
Ian.Attachments:
Mr Ian David Sharp
ParticipantHi all,
Looks like the recent outburst is, all but, over. An interesting divergence of the R and V magnitudes as it faded. See attached.
Cheers
Ian.Attachments:
Mr Ian David Sharp
ParticipantT CrB oscillations tonight.
Hi Maxim,
Yes, I see considerable variability (and variability of variability night on night!). You can see the vertical spread over each night on this plot. I usually take 40 to 60 images per filter per night. It’s hard to display as the points get very bunched and I would have to expand just one or two nights to see the details.
Also, overall since April, T CrB has been quite steady especially in the past two or three weeks.
Cheers
Ian.Attachments:
Mr Ian David Sharp
ParticipantGood morning,
I’m pleased to report I haven’t missed a night in both V and R since the outburst. Here’s the light curve to date.
Cheers
Ian.Attachments:
Mr Ian David Sharp
ParticipantFrom the album: “There is no dark side of the Moon really – as a matter of fact it’s all dark”
Mr Ian David Sharp
ParticipantThanks Jeremy!
I’ve added a batch of R and V from last night. Looks like it’s at, or near to its peak.
Cheers
Ian.Attachments:
Mr Ian David Sharp
ParticipantNow all my R and V data from last night is in the database. Here’s a zoom in to it.
Ian.
Attachments:
Mr Ian David Sharp
ParticipantI’ve processed one set of V and one of V so far.
Should be R and V – sorry.
IanMr Ian David Sharp
ParticipantYes!! I’m thrilled!
I captured 120 exposures in both R and V last night here in the UK and also in Spain. I’ve processed one set of V and one of V so far. See the attached light curves from both AAVSO and BAA databases. I’ve caught the rise right in the middle by the looks of things.
Ian.
Attachments:
Mr Ian David Sharp
ParticipantThanks Gary,
I’m going to image it as long as I can tonight from here and Spain. Maybe I will detect a brightening over the night?
Ian.
Mr Ian David Sharp
ParticipantMy years ago, when I was a Physics undergraduate, we were shown this marvellous film (projected on film of course).
31 January 2024 at 12:54 pm in reply to: AT2024bch – A potentially bright supernova in NGC3206 #621509Mr Ian David Sharp
ParticipantThanks Robin,
I measured it at V=14.59 and R=14.52 last night (2024-01-31 00:30)
Cheers
Ian.Mr Ian David Sharp
ParticipantHi all,
Difficult to quantify, but one statistic I can quote is that I submitted 37,974 variable star measurements to the BAA Photometry database during 2023. This may sound a lot, but I regularly upload 100+ data points in any one observation as I focus on PCEB systems.
It’s only because I have a system in Spain that I was able to do this. Having said that, there was a period from late May for 6 weeks in the UK where I had almost entirely clear skies.
Cheers
Ian.24 December 2023 at 11:57 am in reply to: PHOEBE2 Eclipsing Binary Modeling Software – Help! #621007Mr Ian David Sharp
ParticipantHave you tried the AAVSO ? I may be mistaken but I seem to remember that Bert Pablo, the staff astronomer, had some involvement with the development of PHOEBE2.
Hi Tony,
That’s a very good idea – thanks, I might try that.
In actual fact, I have persisted with this myself and I am now making quite good progress. I have finally managed to understand some of the key concepts and am getting some results out of Phoebe. This is good as I won’t have to ask so many very basic questions if I do contact someone.
Cheers
Ian.Mr Ian David Sharp
ParticipantFolks,
My initial thoughts after successfully observing the occultation last night:Excellent! Certainly more interesting than my drift trail!
Cheers
Ian. -
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