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David SwanParticipant
I look forward to this one meeting expectations: Gideon van Buitenen forecasts it reaching m1=2.5 at perihelion; Jon has it a little dimmer.
There must be a way of exploiting my surname if this does become a significant object and enters the news. Presumably the tabloids would appreciate my commenting on the matter, purely by virtue of my name not knowledge of the matter at hand?
David SwanParticipantStill has satellite leaving Algieba in Leo for Arcturus in Bootes.
(50MB file)
David SwanParticipant[External link]
https://twitter.com/Yeqzids/status/1252256328841523200
Likely first glimpse at Y4 by the HST.
David SwanParticipantHow annoying I missed the train – the skies are great this evening, and I was just waiting for it to get a little darker before going out. C/2019 Y1 is looking very nice this evening.
David SwanParticipantThanks for posting this. My interpretation of this is that because the ISS has a visible pass over the UK on 27th May (it’s expected to be at 21:20), then it is reasonable to suppose that an object launched just a little later on an intercept path might become visible in our skies too. (I am not an expert, so do let me know if this isn’t correct 🙂 ). Anyway I hope Dragon is visible on that day – if so, I’ll be looking up!
13 April 2020 at 7:43 pm in reply to: Forum “Last Post” button and new posts getting lost up the thread #582280David SwanParticipantThanks – I hadn’t seen this, and it is pretty much on the topic I expected! So the near IR pattern has continued as expected.
13 April 2020 at 4:53 pm in reply to: Forum “Last Post” button and new posts getting lost up the thread #582278David SwanParticipantThere is indeed something weird going on: I saw Betelgeuse go back to the top, and clicked on it only to be confronted with an old message. I thought there might be some comments on its evolution up to the end of the Orion season.
David SwanParticipantThat is very impressive Nick. It is great to see those components – four fairly distinct ones. The sky was excellent this evening and I was pleasantly surprised with how – overall – C/2019 Y4 looked on individual subs, so I did a stack of 32 x 20s (2020-04-11T21:39:41 / Middle of exposure).
David SwanParticipantIt has passed on! This comet is no more! It has ceased to be …and joined the choir invisible. THIS IS AN EX-COMET. (Well not quite.)
10 x 20s, not great transparency, 2020-04-08T20:50:20.164 /UT of midpoint of exposure.
23 March 2020 at 12:33 pm in reply to: Unidentified moving object in field of C/2019Y4 (ATLAS) #582131David SwanParticipantI agree with Denis. I got all sorts of artifacts like this with Hyperstar imaging until I got the right filter. Also, I’ve done a 30arcmin MPCChecker job and there wasn’t anything around.
David SwanParticipantNice! I like the website you’ve got going, too.
David SwanParticipantHello,
I have a few ASI cameras and am familiar with ASIcap. I’ve been using the Studio suite for (I think it’s) two weeks now, but am not impressed with the live stacking app (issues around autocalibr with flats and darks) or the Img app (not configurable enough). I would get started with ASIcap for your 290mc: that app is just a little bit more configurable with regard to setting gain and offset etc. Once you get familiar with it, you’ll be able to capture both high frame rate planet videos and image stacks for things like small bright DSOs. I’m happy to put together a brief walkthrough if you wish.
David SwanParticipantT2 is in closest conjunction with the Double Cluster over the next few days. Managed to capture an image this evening during a break in clouds. I’ve finally got the ASI294MC spacing right for my Hyperstar. It has only taken a year’s work, on and off!
David SwanParticipantQuite.
David SwanParticipantThis argument is analogous to that been grammar descriptivists and prescriptivists. Oliver Kamm did, for some years, lay into the latter in his characteristically trenchant style in the Pedant column of The Times. IMHO, the community overwhelming thinks that 2020 is the first year of the new decade, and therefore it is the first year of the new decade. We are not talking about constants of the universe here. Nonetheless, I am willing to tolerate pedants who think otherwise. This isn’t Twitter 😉
David SwanParticipantIt was unexpectedly clear for a period this evening. I caught the comet with a 200mm lens: 50 x 10s. 2020/01/21 21:40.
David SwanParticipantYes, great to hear you got a good view Andrew. I imagine the high altitude of T2 is really helping evening visual observers.
David SwanParticipantVery nice, Robin. I was disappointed not to pick up the green outer coma with my OSC cam and Hyperstar last time, particularly with the comet being so nicely placed at the moment. But it is clear in your spectrum.
7 January 2020 at 7:24 pm in reply to: BAA 2020: Highlighting Women in Astronomy From BAA President Alan Lorrain #581875David SwanParticipantThe National Science Foundation has announced the LSST is now named the Vera C. Rubin Observatory.
David SwanParticipantThanks Robin.
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