Forum Replies Created
-
AuthorPosts
-
16 July 2018 at 5:25 pm in reply to: interesting potential PHA discovered by an amateur team #579713
David SwanParticipantI believe the close approach was June this year (2018), so we’ve missed the best of it. It is low down in Capricornus now, and dimmer than mag 16, but I might have a go if I get a really clear southern sky.
David SwanParticipantThe coma looks like it has expanded significantly since last night. Still bright and quite something.
David SwanParticipantThanks very much Dominic – and Andy.
David SwanParticipantLooking quite spectacular as a big fuzzball moving through the star field.
David SwanParticipantThanks for pointing this out. I’ll have a look. David
David SwanParticipantThanks for pointing out this object. I have been wanting to have a look – and get a low res spectrum with my StarAnalyser – but cloud has been rolling in from the sea night after night after night!
David SwanParticipantFor anyone who is interested, here is a link to a new ATEL where the authors discuss photometry and spectroscopy of this transient. Not definitively a broad-lined type Ic supernova – previously, Robin raised uncertainty about this classification too.
David SwanParticipantYes, I am sure that is right! It will be interesting to see what happens. There was a suggestion of spectroscopy in the article too, wasn’t there? As well as giving people a peek through the scopes at bright targets, I think the operators should deploy the latest EAA software for showing essentially-live pics to a wider audience. Lucky imaging of planets and near-live imaging of asteroids, comets, globulars etc is possible even from that location. I know from my interactions with the public that people are amazed by what’s possible now with the right hardware and software.
David SwanParticipantThis object has gone ‘mainstream’, with articles in New Scientist (and the Daily Mail). The New Scientist article has a floating cow superimposed on a star field, in reference to the transient ID.
David SwanParticipantAn excellent image Peter – seems fitting that there should be one of the sun posted up here at the summer solstice. And there are a few active regions visible on the sun too, which is a bonus.
David SwanParticipantThanks Robin. I didn’t know that a CV in outburst has that spectral appearance. Hopefully with further work things will get cleared up as much as possible.
David SwanParticipantThanks Robin – makes sense.
David SwanParticipantVery nice. In the medium term I think I’ll look at buying a short focal length refractor. It is lovely to have a wide field of view.
David SwanParticipantIn addition to the maximum stacked image on my member’s page, I have created a short video from the same frames. It runs at 5fps. https://1drv.ms/u/s!Agvxu8wNOxpAcskxKKX5lQZyCh4
David SwanParticipantI’ll be looking as often as I can. I had trouble getting access to this patch of sky too!
David SwanParticipantV392 Per is noticeably dimmer than the nearby TYC star now. Here’s an image from this eve (13 May) – UV/IR block only. Time in filename is UT. I have measured the mag as 9.8 (CV).
David SwanParticipantI am perhaps extending this frivolous sidetrack beyond its natural life … notwithstanding this, the New Scientist for a long time ran letters on nominative determinism in its Feedback section. Weedon and Splatt published lots of urology research.
David SwanParticipantI took some frames through the StarAnalyser 100 this evening. I’m pleased to see that my spectrum looks very like yours – the expert’s – but of course mine is lower res. The Halpha emission was indeed striking in the images!
1 May 2018 at 9:26 pm in reply to: Question: proper motion of star, solar system object, artefact or other? #579409
David SwanParticipantThanks Robin. Hopefully the nova will remain bright enough till the weekend for me to deploy my C8 + StarAnalyser on it. I was a bit tired yesterday to attempt some low res spectroscopy. Your stuff looks great – I look forward to seeing how the spectrum evolves.
David SwanParticipantUnfortunately my experience is that fate is rarely on my side on these sorts of matters!
-
AuthorPosts
