SARA_Obs

Live Astronomy @DragonCon 2023 - Dumbbell Nebula M27 in filter sets which are close to RGB, and using a narrow H-alpha filter for the red channel to emphasize the ionized gas. @SARA_Obs Kapteyn telescope, La Palma. @dconspacetrack

Live Astronomy from @DragonCon 2023: after a panel talked about the captured planet in the globular cluster M4, it was too low, but we could reach its cluster cousin M22 in Sagittarius with @SARA_Obs JKT at La Palma. Red giants really stand out in brightness + color. BVR filters.

Live Astronomy @DragonCon Space Track: Pinwheel galaxy M101 and fading supernova (reddish star at lower left). Raced twilight and telescope limits at @SARA_Obs 1m JKT on La Palma. @dconspacetrack

More from @DragonCon Live Astronomy - the ever-popular and striking Eagle Nebula M16 with its star-forming pillars of gas and dust, seen in H-alpha with the @SARA_Obs JKT on La Palma. @dconspacetrack

Moving outward in @DragonCon Live Astronomy images - Jupiter, from Sunday night. Great Red Spot, Ganymede to upper left and Io below it. @SARA_Obs Kapteyn telescope, La Palma. Color a bit enhanced using wavelength baseline from U to H-alpha filters. @dconspacetrack

Views from Live Astronomy sessions @DragonCon - landing site of Chandrayaan 3 (red circle) only a couple of hours before local sunset. U filter, @SARA_Obs Kapteyn telescope at La Palma. @dconspace

Chilean telescope of @SARA_Obs is currently unreachable, as a result of actions taken by @NOAOSouth following cyber attack, presumably the same one which affected @GeminiObs . So much for the "wild west" days of the Internet being behind us.

A colleague noticed this on the Kitt Peak all-sky webcam last night. This is why we unplug everything that has a plug @SARA_Obs for the monsoon season.

Quick look between galaxy series from @SARA_Obs La Palma: #esaeuclid @ESA_Euclid continues toward L2, range 1.18 million km in these 1-minute exposures.

Hey, La Palma telescopes are open after the wildfire! I can resume studies of EELRs and fading AGN with the @SARA_Obs Kapteyn telescope! How do they know which galaxy I'm looking at?

Telescopic look at @ESA_Euclid enroute to L2 at 809,000 km distance, 5-minute trail with @SARA_Obs Kapteyn telescope (JKT) on La Palma. Position from Project Pluto predictions.

Trying to finish another phase of an AGN survey with @SARA_Obs JKT on La Palma. First - well, those crossing satellite trails are unsightly, if distant from the galaxy. Lemme try that one again. Seriously???

Quick composite of M101+supernova in BVR filters, dodging humid periods with @SARA_Obs JKT on La Palma. It sure is getting to be bright.

Gratifyingly long-form look at LCO and what Chilean sites mean to astronomy more broadly. (+the striking thing about vizcachas is how much they act like philosopher-rodents at sunset; you just know they are staring into the heart of things)

Another showpiece of the deep southern sky, a tiny central portion of the Eta Carinae nebula in H-alpha. Center right, can just pick out the Rude Gesture Nebula. @SARA_Obs, Rainwater Obs. outreach session. (And YAY, new SAOImage-DS9 version restores direct image saving!)

More remote imaging from Rainwater outreach: globular cluster and likely former galaxy nucleus Omega Centauri, color composite. So many stars. Very distinct from @dconspacetrack Live Astro favorite 47 Tucanae, which has a sharp core.

From remote imaging last Friday during outreach event at Rainwater Observatory: NGC 4995 with SN 2023gfo (at 5 o'clock from nucleus), @SARA_Obs Chile, B+R filters.

In Nov. 2008, I did manage to rediscover Uranus via @SARA_Obs, as it wandered almost in front of the standard star Feige 110. Longer exposure showing its moons, plus noting F110 is near the ecliptic, clued me in.

Maybe not the most spectacular field of stars and galaxies, and I had to take out some scattered starlight due to clouds - but this demonstrates that the @SARA_Obs 1m telescope at Kitt Peak is indeed back at work after the June 2022 wildfire.

Quick look at comet 2022 E3 ZTF at start of morning twilight on Jan 10, 1m @SARA_Obs JKT on La Palma. R band, right=after median filtering to enhance streamers (along with residuals from stars). Field shown 7.8 arcminutes.