Astronomical Photos

Sunspot AR 12665, taken with Celestron Nexstar 8SE

Saturn (taken 2014) & Jupiter (taken 2016) with Keck in infrared, shown as blue (for fun). The image is from the guiding part of the NIRSPEC spectrometer. The black line is the spectrometer slit, measuring 24 arcseconds tall in angular size in our sky (about 0.007 degrees) - for reference, the moon occupies 0.5 degrees in our sky. Light passes through this slit and it is then split up by a grating, which acts like a prism to separate light into its component colours.

Saturn (taken 2014) & Jupiter (taken 2016) with Keck in infrared, shown as blue (for fun). The image is from the guiding part of the NIRSPEC spectrometer. The black line is the spectrometer slit, measuring 24 arcseconds tall in angular size in our sky (about 0.007 degrees) – for reference, the moon occupies 0.5 degrees in our sky. Light passes through this slit and it is then split up by a grating, which acts like a prism to separate light into its component colours.