I would have posted this in the Spectroscopy section but there is not one.
If you are interested in Spectroscopy to determine the properties of stars and novae there has recently been a workshop in New Mexico. The presentations are available here :https://www.shelyak.com/whorkshop-spect ... 2/?lang=en .
Some are missing but with luck may arrive in due course.
For those interested in imaging and image processing with DSLR, CCD, webcam or film.
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