Hello everyone, here's a quick little trick to quickly check astro filters with just a phone and a basic "spectroscope".📷 Capture.JPG
Ciao
Astro filters quick check
This is interesting to see but it’s really not telling you much. Yes, you can see that you are passing more or less the correct bands but you have no way to measure anything. No way to tell if the band passes and center frequencies are correct.
Concise
Yes, you're right, I did this fun experiment just to illustrate the differences between the filters. It's no substitute for a real spectrometer!
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