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David SwanParticipant
I thought that they covered the item reasonably well too. Hopefully everyone will be gazing south later this evening, peering through the firework smoke to look at Orion’s right shoulder…
David SwanParticipantNot that often a variable star is featured on the BBC Radio 4 six o’clock news!
David SwanParticipantIt just doesn’t jump out of my skies. Whilst eta Ori is visible, it is so much less prominent than the belt stars that the arrow pattern does not emerge naturally in my mind. I think that Betelgeuse, Bellatrix and Rigel also frame the middle stars to be perceived as a belt.
David SwanParticipantThanks David. The clouds are forecast to part this evening…. If they do, I will look for the arrow asterism. I have never thought this myself or even been told about it prior to your post.
David SwanParticipantFollowing on from Paul. Defo Bennett. Print 6, morning of 11 Apr 1970; print 7, morning of 10 Apr 1970. I may be wrong, but the bright star to the right of the comet in print 6 may be omicron And, with 2 And even further to the right.
David SwanParticipantDavid SwanParticipant8P/Tuttle in Nov 1966?
David SwanParticipantFollowing on from Paul:
I suggest this is C/1969 Y1 (Bennett) at around 1970/04/12 02:00 UT.
David SwanParticipantI suggest this is C/1956 R1 (Arend-Roland) at approx 1957/05/20 01:00 UT. Sky Safari places the comet at that time 07 04 55 +63 26 46 J2000.
David SwanParticipantI suggest this is 96P/Machholz 1 at approx 1970/06/04 23:00 UT
David SwanParticipantPeter, I’ve had a look in Sky Safari and you are right.
P2, the brightest star in the frame is Segin, epsilon Cas
P3, ” ” gamma Cas
P4, ” ” gamma Cas
Nicely placed comets!
David SwanParticipantThanks for the info. I read about the project with great interest. On my Twitter account (astro only, no craziness) I’m always retweeting the LSST news feeds to excite my followers about the project.
David SwanParticipantNo doubt the data scientists at the LSST who are developing methods for transient discovery and monitoring are all over this issue.
David SwanParticipantGood point, Grant.
On the other thing – I’m sure he’s learned his lesson, notwithstanding the outcome of the case.
David SwanParticipantI don’t know about the credentials of this news source. But it looks like SpaceX may be testing ways of reducing the reflectivity of the Starlink satellites.
https://spacenews.com/spacex-working-on-fix-for-starlink-satellites-so-they-dont-disrupt-astronomy/
David SwanParticipantGoing east from Anaxagoras I think you may be looking at craterlets in Goldschmidt – and then on to Barrow. Perhaps the northmost dark feature is Scoresby. There is indeed a ray between Barrow and Scoresby.
David SwanParticipantVery well deserved Merlin medal. (I missed the early bit of the YouTube stream, but have caught up with all of it now.)
David SwanParticipantThanks all. Excellent talks.
6 December 2019 at 8:28 pm in reply to: SN 2019vxm – a bright IIn supernova in a faint galaxy #581730David SwanParticipantI’ll mention the issue to Dominic Ford at the next webops (if he doesn’t pick this up before that).
6 December 2019 at 6:31 pm in reply to: SN 2019vxm – a bright IIn supernova in a faint galaxy #581727David SwanParticipantTaken through a luminance filter only, with zeropoint from UCAC4 R mags, the SN comes out around R = 14.4
The timestamp is slightly wrong. I leave Astrometrica to take the start of exposures from individual FITS for track and stack (which is correct). It won’t automatically read the midpoint value put in the header by Maxim when I do a prior stack in that software. Of course I could input the midpoint manually into Astrometrica using the image parameters menu…
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