David Swan

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Viewing 20 posts - 61 through 80 (of 302 total)
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  • in reply to: C/2020 F3 (NEOWISE) #582763
    David Swan
    Participant

    Nice Bill! I am at 55deg N and have the same problem. Isn’t it notable that this comet has received almost no coverage in the mainstream press. I wonder if there has been a Y4 effect.

    in reply to: C/2020 F3 (NEOWISE) #582750
    David Swan
    Participant

    I agree with Nick – get out there, and perhaps pray the evening before for good weather. The object is clearly visible to the naked-eye as a point object (you can pick it up by just scanning the sky by eye in the right area), but through binoculars it is transformed into the classic comet appearance. Leaves a real impression. I used 10 x 50 bins which framed it nicely.

    in reply to: C/2020 F3 (NEOWISE) #582747
    David Swan
    Participant

    Here’s a compressed jpg from this morning.

    in reply to: C/2020 F3 (NEOWISE) #582745
    David Swan
    Participant

    Fantastic comet through binoculars. Well worth getting up for. Thank goodness it was clear in the NE!

    in reply to: C/2020 F3 (NEOWISE) #582730
    David Swan
    Participant

    The provenance seems legit… C/2020 F3 from the ISS

    https://twitter.com/ivan_mks63/status/1279466839823847426

    in reply to: C/2020 F3 (NEOWISE) #582729
    David Swan
    Participant

    Yes 🙂 , I noticed he used his superfast 11in RASA. The good thing is that light gathering capacity isn’t the limiting factor here. It’s the weather that has to play ball – as you say.

    in reply to: C/2020 F3 (NEOWISE) #582726
    David Swan
    Participant

    I agree. I didn’t post a link to the animated image series because such things appear to be strangely unpopular.

    in reply to: C/2020 F3 (NEOWISE) #582724
    David Swan
    Participant

    A nice capture here [external link]

    https://twitter.com/Komet123Jager/status/1279303106728275970

    There may be a patch of clear weather up here Mon morning…

    in reply to: Jet in 3C273 #582722
    David Swan
    Participant

    Convincing to me. It is faintly visible on the DSS plate that I am currently browsing on Aladin. The PA and extent of the jet match nicely in the two images.

    in reply to: Observability Tool #582703
    David Swan
    Participant

    Excellent – thanks!

    in reply to: Signal to Noise Ratio (SNR) estimates #582670
    David Swan
    Participant

    Hi Tim. AstroImageJ (often seen contracted as AIJ) – built on Image J, which is used widely in research – does it quite nicely.

    in reply to: A ring around a red star #582648
    David Swan
    Participant

    Hi Alan. Thanks for posting this. I’m browsing through images of the star on Aladin. The star is so bright that unfortunately the star image is associated with artifacts in all the plates. I’m not saying your colleague hasn’t found something – we need further obs. But not from me I’m afraid – I’m at 55 degrees north and the summer solstice approaches!

    BTW: North is left, East is down.

    in reply to: PQ And in very rare outburst #582592
    David Swan
    Participant

    This implicit reference to posterior probability in Bayesian statistics is just the sort of intellectual high-brow stuff one would expect on our forum 🙂

    in reply to: C/2020 F8 (SWAN) #582481
    David Swan
    Participant

    Sorry Nick. I am happy for you to delete ‘my’ thread to focus all the stuff here.

    in reply to: C/2020 F8 (SWAN) #582465
    David Swan
    Participant

    The Forbes article is measured, with wise comments from you.

    in reply to: C/2020 F8 (SWAN) #582463
    David Swan
    Participant

    So I went to the Daily Mail for the latest authoritative information on C/2020 F8 … and to my great surprise came across some commentary by Nick!

    in reply to: C/2020 F8 (SWAN) #582460
    David Swan
    Participant

    This is great, thanks. Good to see it has arrived in the northern sky. It is obviously quite a bright object (would you say mag 5 – 6  is about right?) from looking at the stars that are visible in your image. Unfortunately we’ve had a lot of cloud at the NE coast these past weeks, and I haven’t been able to observe for some time. I’m ready with binoculars and a DSLR. The latest images do show a dust tail, which I hope develops further.

    in reply to: C/2020 F8 (SWAN) #582446
    David Swan
    Participant

    Hergenrother (credible observer) reported mag 5.7 at 2020/05/13.46

    in reply to: Raspberry Pi Camera #582402
    David Swan
    Participant

    Thanks for posting this, Grant – I am quite interested in the all-sky cam set up.

    in reply to: Large TV Dishes #582393
    David Swan
    Participant

    It is BAA member Robin Leadbeater at the Three Hills Observatory.

Viewing 20 posts - 61 through 80 (of 302 total)