Imagine STELLA is a science detective with super cool gadgets! These gadgets are like tiny sensors that STELLA uses to collect clues about the world around us.
- STELLA’s Gadgets: These are the sensors that measure things like air quality, sunlight, and even how healthy plants are!
- The Detective’s Notebook: This is the microSD card! STELLA stores all the information it collects from its gadgets in these cards, kind of like a detective writing everything down in a notebook.
- Secret Code: Those .csv files are like a secret code that scientists use to understand the information STELLA collected.
The information STELLA gathers isn’t perfect, but it’s a great first step to becoming a real science whiz! Here’s what some of STELLA’s gadgets can do:
- Spectrometer: This gadget is like a special camera that can see the world in different colors, invisible to our eyes! It can tell the difference between healthy, green grass and dry, brown grass.
- STELLA-AQ: This one is like a tiny air quality sniffer! It can tell you if the air is cleaner in an open field compared to a busy street corner.
- Helio-STELLA: This gadget measures the strength of the sun’s rays. It can tell you if there’s more sunshine in an open meadow or under the shade of a big tree.
So next time you’re outside, remember STELLA might be there too, using its detective skills to learn more about our world through the amazing data it collects!
STELLA Spectrometer Data
(STELLA-Q, STELLA-1.0, STELLA-1.1, STELLA-2.0)
- Make sure the target area is away from your shadow. To keep out of the shadow the STELLA 1.0 and 1.1 can have a 1/2″ dowel rod inserted into the tapered hole in the back of the casing so you can hold the instrument away from you.
- Hold the instrument steady during its data collection.
- Take good field notes such as the batch number, what the target is your measuring, weather and atmospheric conditions.
- The angle and distance of the instrument from the target play a role in the measurements you receive. If the angle of the instrument is tilted it will have an effect on the measurements taken. The further away the instrument the larger the swath of area being measured.
STELLA spectrometer data is collected as a .csv (comma separated value) file on the micro SD card.
In individual sample (yellow) and continuous (blue) mode the data will be saved in batches on the data.csv file.
In sample and average (blue) mode the STELLA will take 20 measurements and put them into their own individual .csv file.
Data collected by the STELLA spectrometers is separated by Universal Identification (UID), batch number, date and time.
STELLA-Q collects air temperature, relative humidity, barometric pressure, and irradiance (µW/cm2) data between 450nm to 860nm.
STELLA-1.1 collects surface temperature, air temperature, relative humidity, barometric pressure, and irradiance (µW/cm2) data between 450nm to 860nm. As well as optional height measurement data using Lidar.
STELLA-2 collects surface temperature, air temperature, relative humidity, barometric pressure, irradiance (µW/cm2) between 450nm to 860nm, 3-axis acceleration (m/s2), 3-axis angular rotation (°/s), and 3-axis magnetic flux (μT) data.
STELLA Air Quality Data
(STELLA-AQ)
STELLA air quality data is collected as a .csv (comma separated value) file on the micro SD card.
Data collected by the STELLA-AQ is separated by Universal Identification (UID), batch number, date and time.
Measurement data it collects is air quality index for particulates, carbon dioxide in parts per million (ppm), air temperature, relative humidity, barometric pressure, and particle densities from 2.5µm and 10µm.
