Only 12 days until the spectroscopy conference! Apparently they have sold out. About 80 attendees have registered from all over the world!
In the last spectroscopy post I discovered that my camera was oriented upside down and since then I have corrected that. I have also oriented my spectrum horizontally. The results are shown here. Notice in the previous spectrum of Alhena, a strong type A star, the H-alpha absorption line is “blue shifted” which is not the result of some bizarre physical phenomenon of this star but a disoriented camera! After reorienting the camera the absorption line occurs at the 6563 Angstrom point- which is correct! Remember this star is the calibration star meaning that is what I am using to correct for aberrations in my optical set up and seeing conditions. The target star is shown below which is a Be star and has emission lines as well as absorption lines. So it would appear that I am now essentially prepared to do the demonstration on acquiring a spectrum with the Lhires III!
Thanks for reading!