amateur astronomy and astrophotography
The Lowspec project The Lowspec DIY spectroscope was designed by Paul Gerlach and placed on Thingiverse.com. The project is made around the idea to create a slit spectroscope on a budget. Commercially available slit spectroscopes generally cost in acces of
This animation was build up from the Luminance frames taken for the photometry run which resulted in lightcurves of 15 pulsating RR Lyrea stars. In total 130 frames of 3 minutes each were used. For the animation 10 frames were
de periode-helderheidsrelatie van pulserende RR Lyrea sterren Ik heb geprobeerd aan de hand van helderheidsmetingen van pulserende sterren in Messier 3 de afstand tot deze bolhoop te bepalen.Lang verhaal kort: het is niet gelukt. De periode-helderheidsrelatie voor deze sterren in