Previous image Index At last image
Index Previous image At last image Start slideshow (5 s)

Image 6 of 6


An early experiment in HDR, this image reveals the point spread function of the telescope (Takahashi CN212 at f/12) including the diffraction spikes of the secondary mirror vanes. The dim star is at magnitude-10; Vega is 10,000 times brighter. The apparent "loops" in the image of Vega are due to imperfect motion deblurring and frame alignment.

© Copyright 2007 Thor Olson