a WCS library for the web http://t.co/D7aU4ZLu1N #JavaScript #emscripten #astrojs #hackAAS
— Amit Kapadia (@amitinho) January 9, 2014
I’m not at #hackAAS but I’ve been hacking this: https://t.co/hbGGxzkYQe It’s a new python tool to diff/watch/package/… latex manuscripts.
— Jonathan Sick (@jonathansick) January 9, 2014
So I made a cool hack inspired by #hackAAS.
Some tweets of folks working on cool creative projects at AAS (and elsewhere) spurned me on. Thanks strangers.
I made a completely automatic demo so you can push an arcade style button and see a live video of a Hydrogen Balmer spectrum.
I have a high voltage power supply and a hydrogen spectrum tube
a Raspberry Pi, and peripherals. Peripherals are merely for setup.
a Powerswitch Tail 2.
an arcade style button.
a GPIO cable connected to the Raspberry Pi and a Pi Cobbler.a Raspberry Pi camera and a toy diffraction grating.
I followedthis tutorial closely.
Here is my simple code on GitHub.
The code takes advantage of the Raspistill command line option to show a preview video, without actually laboriously saving a video. The power only runs for 11 seconds because the spectrum tube vendor discourages continuous use over 30 seconds, as to avoid burnout of the Hydrogen tube. Besides, a viewer gets the idea after about 11 seconds. They can hit the button again, after a few seconds delay.
Here is a picture of the prototype setup.
Some tweets of folks working on cool creative projects at AAS (and elsewhere) spurned me on. Thanks strangers.
I made a completely automatic demo so you can push an arcade style button and see a live video of a Hydrogen Balmer spectrum.
I have a high voltage power supply and a hydrogen spectrum tube
a Raspberry Pi, and peripherals. Peripherals are merely for setup.
a Powerswitch Tail 2.
an arcade style button.
a GPIO cable connected to the Raspberry Pi and a Pi Cobbler.a Raspberry Pi camera and a toy diffraction grating.
I followedthis tutorial closely.
Here is my simple code on GitHub.
The code takes advantage of the Raspistill command line option to show a preview video, without actually laboriously saving a video. The power only runs for 11 seconds because the spectrum tube vendor discourages continuous use over 30 seconds, as to avoid burnout of the Hydrogen tube. Besides, a viewer gets the idea after about 11 seconds. They can hit the button again, after a few seconds delay.
Here is a picture of the prototype setup.
And a picture of the final H Balmer spectrum. H alpha, H beta, H gamma are all perceptible. Cool!
This demo is destined for a large display case in the hallway of the University of Texas at Austin Department of Astronomy RLM hall's 15th floor.
Passersby will be able to hit the button and see the spectrum. There will be places for smart phones to take photos directly through a diffraction grating, and eye-level diffraction gratings to look directly. There will be supplemental information about spectroscopy and hydrogen, and their importance in astronomy.
I'm considering adding a timestamp recorder so that it will log every time someone hits the button to see how often it is used.
Hope you enjoyed my hack, inspired by #hackAAS.
-gully
This demo is destined for a large display case in the hallway of the University of Texas at Austin Department of Astronomy RLM hall's 15th floor.
Passersby will be able to hit the button and see the spectrum. There will be places for smart phones to take photos directly through a diffraction grating, and eye-level diffraction gratings to look directly. There will be supplemental information about spectroscopy and hydrogen, and their importance in astronomy.
I'm considering adding a timestamp recorder so that it will log every time someone hits the button to see how often it is used.
Hope you enjoyed my hack, inspired by #hackAAS.
-gully