David Swan

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Viewing 20 posts - 41 through 60 (of 314 total)
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  • in reply to: Nova Cas 2021 #583988
    David Swan
    Participant

    Wow, it’s bright – and so nicely placed in Cas next to M52 and the Bubble Nebula! I carried out a 41 x 5s stack this eve: not scientifically useful, but a pretty pic, I think.

    in reply to: possible supernova AT 2021gmj in NGC3310 (UMa) #583977
    David Swan
    Participant

    Astrometrica puts it ~ mag 15.6

    in reply to: possible supernova AT 2021gmj in NGC3310 (UMa) #583976
    David Swan
    Participant

    Captured at 20:32 UT this evening (20 Mar).

    in reply to: ZWO and Skywatcher #583736
    David Swan
    Participant

    Getting the spacing right can indeed be a faff. I’m sorted also with my RASA 8: a 7.5 mm spacer has given me nice circular donuts all the way to the corners of my largest sensor. My calculations suggested 12.5 mm would be required to get me there, but no – trying and testing got me to the solution. Phew!

    in reply to: possible supernova AT 2021aai in NGC 2268 #583728
    David Swan
    Participant

    Thanks Robin.

    On the topic of atypical phenomena, others may be interested that there is a nice article on transients, written by Anna Ho, in the December 2020 issue of Scientific American. Amongst other things, she talks about SN2018gep and the famous ‘cow’, which spawned many strange illustrations of floating cows, AT2018cow.

    in reply to: possible supernova AT 2021aai in NGC 2268 #583726
    David Swan
    Participant

    I captured the transient this evening (2021/01/16 20:30) – it is still dimmer than the nearby field star.

    in reply to: possible supernova AT 2021aai in NGC 2268 #583725
    David Swan
    Participant

    Do you have any guesses / good ideas about what it might be, Robin?

    in reply to: Two comets at an eclipse #583713
    David Swan
    Participant

    Impressive contrast.

    in reply to: Astronomy during lockdown #583672
    David Swan
    Participant

    My observing has been quite badly affected by lockdown. I have a yard that is light polluted and affords access to only a very limited part of the sky. Normally I would go to a observing spot closer to the sea, which is much darker and has better sky access, but I have been wary during the stringent lockdown periods – even though it is just myself at the scope.

    Of course I am not saying this is significant disruption in the grand scheme of things (before there is a pile-on).

    in reply to: Update to member pages #583507
    David Swan
    Participant

    Superb – thanks Dominic for all your hard work.

    in reply to: Jonathan Shanklin honoured #583458
    David Swan
    Participant

    Congratulations, Jonathan. I think we should use the area and volume of the glacier as the ‘in-house’ BAA standards for the dimensions of minor bodies. Probably not very stable standards, mind… Better stick with Giraffes and the principality that is Wales.

    in reply to: Nova in Perseus #583407
    David Swan
    Participant

    Whoa, that’s bright. Unfortunately it is (still) really cloudy here.

    in reply to: IX Dra: observations requested #583355
    David Swan
    Participant

    I measured IX Dra = 14.926 CV at 2020/11/10 22:33 UT.

    in reply to: IX Dra: observations requested #583351
    David Swan
    Participant

    Conditions in NE England have been terrible over the past week: lots of mist and fog. If the Met Office forecast is right, there may be the odd break over the next few days. I’ll be sure to do measurements if conditions permit.

    in reply to: IX Dra: observations requested #583273
    David Swan
    Participant

    Measured IX Dra at 15.650 CV this evening, 2020/10/22 21:07 UT.

    in reply to: AY Lac #583223
    David Swan
    Participant

    An image of the nova. Lots of stars around here!

    Image details: Centre RA 22h 22m 32.3s,  Dec +50° 23′ 42.5″; Pos Angle +316° 35.2′; FL 196.3 mm; 2.52″/Pixel

    in reply to: Chocolate telescope #583157
    David Swan
    Participant

    Not good for solar, but at least – after a time – you’d be left with a Milky Way leading up to the observatory.

    in reply to: possible supernova in nearby NGC 5002 #582983
    David Swan
    Participant

    About 3deg from Cor Caroli in CVn, for those who don’t speak NGC or can’t be bothered to look it up 😉

    in reply to: Nova in Cas #582982
    David Swan
    Participant

    I took images last night through a V filter and measured a calibrated stack in Maxim (AAVSO X25582AO) 

    N Cas 2020 measured 11.548 CCD-V

    REF 112 set 11.186

    CHK 126 measured 12.599

    in reply to: C/2020 F3 (NEOWISE) #582977
    David Swan
    Participant

    Very nice, Robin. Is there very much in the literature on the spatial distribution of the various components in comets longitudinally through an apparition? If only bright-ish comets coming close-ish to Earth were more frequent…

Viewing 20 posts - 41 through 60 (of 314 total)