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Chad Bender

@chadfbender

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

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23.11.2024
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Latest posts by Chad Bender @chadfbender

Discovering exoplanets with machine learning Develop a machine-learned model of stellar spectra and instrumental quirks, and use it to discover exoplanets in radial velocity data.

Do you already have a Masters? Do you want to do a PhD in exoplanet radial velocity surveys with me at Macquarie University in Sydney?

Then have I got an ad for you!

04.03.2026 05:13 ๐Ÿ‘ 21 ๐Ÿ” 11 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Post image

Virgil is contemplating the meaning of the door...

28.02.2026 17:46 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Oh god, it's happening. Not ready...

25.02.2026 01:14 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Tonight is the night I learned why cloves are not in the standard apple pie recipe. Seemed like a good idea at the time, but it was not. My tongue is tingling.

23.02.2026 04:45 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Add @lynncarter.bsky.social ...

23.02.2026 03:11 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Once in a while the pipeline goes awry, and many things end up radical.

20.02.2026 14:55 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

No, certainly not.

20.02.2026 14:54 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

That's just terrible and senseless. Condolences to his IPAC friends and the astronomy community as a whole. I didn't know him personally, but his work spoke for itself.

20.02.2026 04:45 ๐Ÿ‘ 4 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

If it's a temperature that would get you in trouble if you replicated it in the lab, it's hot.

17.02.2026 03:05 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

I bet they would prefer that you let it out of the cup. Even more enrichment (protein, fiber, etc.)

17.02.2026 00:52 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0
Post image Post image

Spent the afternoon resawing some truly spectacular figured cherry for drawer fronts.

16.02.2026 01:25 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

I've found the most effective way to suppress the gremlins is to get a comfortable chair and a book and camp out next to the hardware. Virtually guaranteed to get through the experiment without error, unless you fall asleep, at which point things will break.

14.02.2026 20:33 ๐Ÿ‘ 7 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Finally found a use for AI: it's very good at debugging my one off bash scripts.

13.02.2026 03:52 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Research Scientist/Engineer 2 (E S UAW Research) Job Description The University of Washington (UW) Astronomy Department has an outstanding opportunity for a researcher who will have responsibilities in the design, development, construction, and test...

Hey y'all. I'm hiring. Are you interested in building instruments for astrophysics?

wd5.myworkdaysite.com/recruiting/u...

09.02.2026 19:51 ๐Ÿ‘ 118 ๐Ÿ” 87 ๐Ÿ’ฌ 9 ๐Ÿ“Œ 7

This literally just happened in our house.

07.02.2026 04:57 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

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

06.02.2026 15:26 ๐Ÿ‘ 4 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“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 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“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 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“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 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

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

31.01.2026 03:26 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“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 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“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 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“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 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Yikes

17.01.2026 02:47 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“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 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 2 ๐Ÿ“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 ๐Ÿ‘ 2 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“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 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

That doesn't seem right...

12.01.2026 18:53 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Statement by Federal Reserve Chair Jerome H. Powell
Statement by Federal Reserve Chair Jerome H. Powell YouTube video by Federal Reserve

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 ๐Ÿ‘ 24037 ๐Ÿ” 9202 ๐Ÿ’ฌ 1150 ๐Ÿ“Œ 2892

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 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0