7 Minute ReadA few years ago I built a couple of diffraction grating spectrographs. At that time I was a keen amateur astronomer with some degree of traditional photographic, as well as digital, imaging experience. I was hoping (no doubt optimistically and probably naively with hindsight) to connect a spectrometer to my telescope to record the spectra […]
Homemade Spectrometers (Part I) Read More »
2 Minute ReadIntroduction Several years ago I connected the MS125 spectrometer to a 12 inch Meade LX200 telescope to test its suitability for recording stellar spectra. In order manually to guide on the star’s image the Oriel Sighting Optic was employed which you can clearly see in the photo here: Exposure times were limited to under 5
Some Early Stellar Spectra Read More »
5 Minute ReadReflection is simply the return of a light ray from any surface without any change in wavelength. It is also referred to as Reflectance, defined as the effectiveness of any material in reflecting (returning) radiant energy of any wavelength, not just visible light. It comes in two types: (1) Specular Reflection, in which the angle
Diffuse Reflectance Spectroscopy Read More »
