› Forums › Spectroscopy › Introduction to spectroscopy › Alioth through clouds
14 January 2018 at 1:57 pm
#578966
David Swan
Spectator
I’ve carried out my first capture. Not an ideal target I gather, but the weather isn’t cooperating! I’ve done the wavelength calibration – with the star image and hydrogen alpha line. Focus is definitely something I’ll work on; and exposure time too. David