Things were rockin' and rollin' at APO last night! We felt a 5.5 magnitude earthquake centered south of Carlsbad - check the telescope telemetry data that shows the movement! Photo courtesy of @ajlemma 🤩 earthquake.usgs.gov/earthqua…

Behold! Comet Tsuchinshan-ATLAS, Venus (at left), and our fabulous 3.5m telescope 🤩 Photo courtesy of Observing Specialist Mark Croom.

Beautiful aurora from APO tonight!!!

We caught the Starliner coming in for a landing at White Sands using our all-sky camera! It's the streak in the southwest corner (lower right) of each frame. Thanks for sharing these ⁦@ajlemma⁩ !

Did you hear about the fireball over the Philippines yesterday due to a 1m size asteroid impacting Earth?! The object 2024 RW1 was discovered by @catalina_sky and subsequently imaged by @bryce_bolin and C. Ingebretsen, with help from @ajlemma and V. Sutherland, using APO! ☄️🤩

A rare sighting of all of our amazing 3.5m observing specialists in one place! Thanks to everyone for being there for the exciting training session on APOLLO operations. Pew pew!!! 💚

We had a great eyepiece viewing session for the ARC Board and SDSS AC meeting attendees! Thanks to @ARedheadOfVenus and @ajlemma for the wonderful sky tour!

Case in point: @AstronomerBill split his time this week between #APOSS21 and summer shutdown engineering tasks!

Did you know that the upper atmosphere of the Sun emits extra light at certain wavelengths (or colors)? We can measure this excess emission with ARCES on the APO 3.5 m telescope.