#occultation — Public Fediverse posts

L’hétérosexualité comme régime de domination politique 🧶

📻🎧 Écoutez Sara Garbagnoli : https://www.radiofrance.fr/franceculture/podcasts/questions-du-soir-l-idee/la-renaissance-wittig-4279570

#clarté #radicalité #croyances #subjuguer #naturalisme #appropriation #sexisme #hétérosexisme #saphisme #hétéroNormativité #féminismes #histoire #conseilPodcast #MoniqueWittig #Wittig #antiracisme #littérature #homosexualité #MLF #féminisme #internationalisme #matérialisme #radicalité #patriarcat #linguistique #écrire #savoirsMinoritaires #universalisme #queer #constructivisme #antagonisme #utopie #histoireDesIdées #lacune #occultation #hétérosexualité

Here our observation of stellar #occultation #Betelgeuse by asteroid (319) #Leona on 2023 Dec 12, observed from #Makroskooppi remote observatory in Fregenal de la Sierra, Spain. Occultation lasted about 7 seconds, which is less than predicted 11.6 seconds in central path. Our observatory's position was a bit north of central occultation path at N 38⁰ 13′ 10.89″ – W 6⁰ 37′ 54.32″ – 560m.

https://www.taivaanvahti.fi/observations/show/120387

To avoid the inevitable disappointment associated with #Leona #asteroid #occultation of #Betelgeuse, I set up my own, not-so-rare, #occultation event.

The streetlamp a few hundred metres down the road is occulted by a chickpea suspended from a thread in front of an upstairs window as the camera is moved slowly sideways.

The early collection https://call4obs.iota-es.de/observations-of-the-occultation-of-betelgeuse-by-319-leona of reported observations of the #occultation of #Betelgeuse by #Leona last night demonstrates the great success of the campaign - a bewildering variety of data, now waiting to be analyzed!

The first video I've seen showing the complete constellation Orion - and
#Betelgeuse blinking out (from 0:07 to 0:12 roughly) when #Leona did the #occultation thing over Spain: https://www.youtube.com/watch?v=KlIjVjqcnmE (everything is a bit dim, so watch it with maximum size in a dark room).

Whoa! Here is the #occultation of #Betelgeuse by #Leona as seen from Calabria by Andreas Schweizer: https://twitter.com/aschweiz77/status/1734385330801815705 - the lowest horizontal line is zero. What he saw in H-Alpha: https://twitter.com/aschweiz77/status/1734391190227710123. And two video clips from elsewhere with the slight dimming discernible: https://twitter.com/ElbesoenlaLuna/status/1734388885705158939 and https://twitter.com/geologoenapuros/status/1734389096791859598. Yes, sorry, so it was X FTW again tonight ... as (still) always when dramatic things happen in the sky. The sheer number of users over there makes the difference.

The webcasts https://www.youtube.com/watch?v=ieTyBBNT7ws and https://www.youtube.com/watch?v=4h7qdZwV0_Q - both from Portugal - are the only ones mentioned in https://call4obs.iota-es.de/news-feed-occultation-of-betelgeuse-by-319-leona and https://occultations.org/publications/rasc/2023/20231212Leona.htm showing a live image of #Betelgeuse now. #Occultation by #Leona expected there in 3 minutes.

@IOTA_European_Section

I’ve been updating the relevant #Wikipedia articles. How many amateur astronomers are out there?

#astronomy #occultation #Betelgeuse #stellaroccultation #cititzenscience #Leona

The stellar #occultation by (319) #Leona on 13 September 2023 in preparation for the occultation of #Betelgeuse: https://arxiv.org/abs/2309.12272 -> "The effective diameter in projected area derived from the positive detections at 17 sites turned out to be 66 km ± 2 km using an elliptical fit to the instantaneous limb. The body is highly elongated, with dimensions of 79.6 ± 2.2 km x 54.8 ± 1.3 km in its long and short axis, respectively, at the occultation time."

An update about the star #occultation by asteroid #Leona on 13 September was just given at the #ESOP 42 conference in #Armagh: chords were observed successfully from 17 (!) different sites in Spain, and a paper about what was learned will become available early next week! More sites than expected saw the star disappear (e.g. Calar Alto was expected to miss it but didn't), so Leona seems to be bigger than thought - but whether it will cover #Betelgeuse completely in December is still not clear.

The star #occultation by asteroid #Leona this morning (which will occult #Betelgeuse in December) was observed successfully in Spain: here is the current reports table from https://cloud.occultwatcher.net/event/985-319-80946-648881-U014751 (which *may' indicate a larger or longer body than expected) while another observers group is reporting at least 8 chords. Frantic analysis is under way, in order to refine predictions for the December event, and early results may be presented already this weekend at the meeting https://www.armagh.space/meetings-conferences/esop42

In a few hours the asteroid (319) #Leona will occult a faint star - but getting chords across it is important to refine predictions for the #occultation of #Betelgeuse by the same asteroid in December. In Spain in particular observers are on alert: updates in the thread https://twitter.com/IOTAEuropeanSec/status/1701641777487253888 = https://nitter.net/IOTAEuropeanSec/status/1701641777487253888