Chad Bender's Avatar

Chad Bender

@chadfbender.bsky.social

Astronomer at University of Arizona's Steward Observatory. Instrument builder: LFAST, NEID, HPF. Building giant telescopes! Hobbyist woodworker. Decent vinyl collection.

285 Followers  |  265 Following  |  206 Posts  |  Joined: 23.11.2024  |  2.1843

Latest posts by chadfbender.bsky.social on Bluesky

This literally just happened in our house.

07.02.2026 04:57 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I've been looking for this system for 25 years.

06.02.2026 15:26 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Finally finished Ken Burn's American Revolution. If you haven't made it through it, the last 15 minutes of Episode 6 are worth skipping ahead to, particularly in these trying times that we live in today: a true encapsulation of what it means to be the United States of America and an American.

06.02.2026 05:23 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

No animals were serious harmed in this experiment, but the cat is trying to figure out how to dry his tail. I presume the fish are amused.

01.02.2026 02:46 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Tonight is the night that the dumb cat discovered what happens when he jumps on top of the fish tank while the lid is open for feeding. Turns out the fish are protected by more than glass.

01.02.2026 02:46 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

And this is why I'll order from almost anyone except for Uline.

31.01.2026 03:26 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Ah Tucson in January, where the local public radio host gives the hourly weather update and describes it as "a chilly 55".

25.01.2026 22:03 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Ah, the classic astronomer "version control in the filename" scheme. Just add "_THISONE" after your edits are complete.

21.01.2026 20:09 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Indeed. It's almost as if we're not good at only signing up for things we can reasonably accomplish.

18.01.2026 23:40 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Yikes

17.01.2026 02:47 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I went into my lab yesterday and the hood was off. Fortunately no chemicals under it since we hadn't restarted work there yet. Fan is in the roof. FM turned it on in 24 hours, but no word why it was off and no placard about non-use.

15.01.2026 15:09 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0
Preview
If You Think This Instrument Is Hard to Play, Try Building One

As a recovering oboist myself, this is a great article (and the comments section is pretty wild...) www.nytimes.com/2026/01/14/a...

15.01.2026 04:55 β€” πŸ‘ 2    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

I rearranged my desk in my office so I can stare out the window. It has the side benefit that I'm not staring down the hallway, so I'm not continuously distracted by people walking past. Minor downside is that folks occasionally sneak up on me when I'm blueskying.

12.01.2026 23:25 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

That doesn't seem right...

12.01.2026 18:53 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Statement by Federal Reserve Chair Jerome H. Powell
YouTube video by Federal Reserve Statement by Federal Reserve Chair Jerome H. Powell

Video message from Federal Reserve Chair Jerome H. Powell:
www.youtube.com/watch?v=KckG...
www.federalreserve.gov/newsevents/s...

12.01.2026 00:35 β€” πŸ‘ 24068    πŸ” 9227    πŸ’¬ 1156    πŸ“Œ 2904

Only organized when I put things back where they belong. There is "almost" a home for everything. I cannot recall any time where everything was actually in its home.

12.01.2026 01:53 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Hobbies are important for happiness, and particularly in this era of non-stop chaos that we are in. Hobbies that can draw blood, and so require close focus, are particularly interesting. Fortunately, the only blood this weekend came from a potato peeler, when i was not paying attention. 4/4

12.01.2026 01:37 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

The dimensions for the dresser come from one of the excellent books published by Robert Lang, which has held an important place on my woodworking bookshelf for nearly 20 years. 3/4

12.01.2026 01:37 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Wooden boards laid out in a garage for inspection.

Wooden boards laid out in a garage for inspection.

I'm making this out of curly cherry from PA that I purchased in a matched set from Irion Lumber a few years back. This way all of the wood should age the same color, and have the same grain pattern. Hidden bits of the frames and the future drawer sides use plain cherry. 2/4

12.01.2026 01:37 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
A wooden dresser being fitted up, on its side in a workshop

A wooden dresser being fitted up, on its side in a workshop

Finally managed to get some time in my wood shop this weekend, and made good progress test fitting a dresser I've been working on for a while. This is modeled after the Harvey Ellis designed #913 in the Gustav Stickley catalog. I've used paneled sides and back, and full web-frames inside. 1/4

12.01.2026 01:37 β€” πŸ‘ 6    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Picard management tip: Suppress your inner alarm. Be the calmest person in the room.

11.01.2026 19:04 β€” πŸ‘ 152    πŸ” 18    πŸ’¬ 2    πŸ“Œ 1

No kidding. I think we all need a nap.

10.01.2026 05:45 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
Google’s Former C.E.O. Wants to Build a Cosmic Search Engine

why you need big telescopes for spectroscopy -- β€œYou have to collect enough photons because you’re spreading them out,” said @chadfbender.bsky.social, an astronomer at the University of Arizona, which is in charge of LFAST. www.nytimes.com/2026/01/09/s...

09.01.2026 16:05 β€” πŸ‘ 4    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
Preview
Google’s Former C.E.O. Wants to Build a Cosmic Search Engine

www.nytimes.com/2026/01/09/s...

#LFAST in the NY Times.

09.01.2026 16:40 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Yes, but I have some caveats. I need to better understand the development status of fiber beam lines. But I have other ideas that may not require them. Maybe should chat offline.

09.01.2026 02:28 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Nominally 1 -
it's a single object fiber feed, with high-res in mind. But, at some (potential) array scales, there are different answers to that.

08.01.2026 14:44 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Post image Post image Post image Post image

Packed splinter session at #AAS247 for the announcement of The Eric and Wendy Schmidt Observatory Systemβ€”a modular, rapid-response network of four novel observatories designed to democratize access to the cosmos.

Read more about the initiatives here: www.schmidtsciences.org/focus-area-a...

07.01.2026 23:05 β€” πŸ‘ 22    πŸ” 9    πŸ’¬ 1    πŸ“Œ 2
Preview
Ex–Google CEO funds private space telescope bigger than Hubble Schmidt Sciences announces investments in orbiting observatory and three ground-based instruments

Just spent the day doing a thing: www.science.org/content/arti...

Roger Angel and I are Co-PIing the LFAST telescope, which is being built at @stewardobservatory.bsky.social and provides the ground based spectroscopic component of this venture.

@schmidtsciences.bsky.social #AAS247 #Arizona #LFAST

08.01.2026 05:53 β€” πŸ‘ 13    πŸ” 3    πŸ’¬ 1    πŸ“Œ 0

Happening now!

07.01.2026 22:02 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Crowded convention room with no empty seats.

Crowded convention room with no empty seats.

Standing room only for the Schmidt Sciences presentation at AAS.

07.01.2026 21:55 β€” πŸ‘ 17    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0

@chadfbender is following 20 prominent accounts