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Jeremy ShearsParticipant
Good to hear the clouds have finally parted, Max.
Jeremy ShearsParticipantThanks Max. A very petite eclipse!
Jeremy ShearsParticipantLooks like normal service has been resumed, Max! 👍🏻
Jeremy ShearsParticipantNice to see you continuing despite the inclement wx, Max.
Jeremy ShearsParticipantThe digitally remastered images are truly remarkable
Jeremy ShearsParticipantImpressive set up, Max. Looks very reliable indeed.
Jeremy ShearsParticipantWelcome back, Max. I was getting worried! Good to see that data have been collected in the meantime
Jeremy ShearsParticipantYes, probably poor transparency and moonlight interference, Max.
Jeremy ShearsParticipantInteresting to see them superposed on the brightening trend line
Jeremy ShearsParticipantThat is a dramatic eclipse Max! Seems to be enhanced by the preceding hump.
Jeremy ShearsParticipantLooks slightly shallower, as expected, Max
Jeremy ShearsParticipantI see the dilemma, Max (also shows rage pitfalls CV observers can get into with less than ideal data). If you can confidently and consistently compensate that would be the way to go (sorry!). In any case, it would be important to identify those eclipses where there is some kind of uncertainty in assignment of type.
3 August 2022 at 2:09 pm in reply to: Public release of JWST’s first images and spectra – July 12 #611761Jeremy ShearsParticipantInteresting to see JWST papers already appearing: https://arxiv.org/abs/2208.01630
This one on flattened disc, reddened galaxies.
No doubt a trickle will soon become a torrent
Jeremy ShearsParticipantThey may even be a fraction deeper that’s the last pair, Max. Asymmetric, as before, as you noted, perhaps steeper entry…
Jeremy ShearsParticipantThose 2 look very similar indeed! Slightly quicker fade than recovery
27 July 2022 at 9:44 pm in reply to: Talk about Irish Astronomer: John Birmingham (1816–1884) #611636Jeremy ShearsParticipantThis is excellent news – thanks for sharing the link, Ronan.
Jeremy ShearsParticipantWould need to think about that Max 🙂
It’s great fun having these speculations. We’d probably not be in the position to do so with your intense and precise data.Jeremy ShearsParticipantSuperhumps are characteristic of a DN superoutburst. There are indeed caused by the AD becoming elliptical. So there would need to be a series of humps, the period of which would be slightly longer than Porb. Have you measured the “hump period” to check that it is consistent with the eclipse period?
Jeremy ShearsParticipantThose data are truly remarkable regarding their precision, Max. I suppose technically this is a bright outburst (no superhumps modulated with the Porb, which is too long to be a UGSU system).
I wonder if there is any way of probing (or estimating) how much of the disc goes into outburst. There is an idea that only part of the AD goes into outburst, resulting in these “stunted” outbursts. I therefore wonder if the eclipse width of this bright outburst is wider. Or perhaps this current outburst is a “normal” one, like the one 5 outbursts ago at the beginning of your second plot above, the intervening 4 being “stunted” outbursts……
Jeremy ShearsParticipantI can’t believe its almost a year since the RS Oph eruption!
An MNRAS pre-print on the “Study of 2021 outburst of the recurrent nova RS Ophiuchi: Photoionization and morpho-kinematic modelling”, on ArXiv today, presents the evolution of the optical spectra of the eruption, includes amateur spectroscopy and photometry: https://arxiv.org/abs/2207.10473
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