astrophotography by bill w

Narrow band imaging is a technique astronomers use to demonstrate the spatial distribution of specific ion emission lines in an astronomical...

On 3/21-22 Jupiter put on a juggling display Io, Europa and their shadows crossed Jupiter's face along with the great red spot over th...

jupiter's up and in prime form right now here's my first of the season: might be my imagination,  but the red spot (which ha...

I'd planned to image a very faint planetary binned x 4, but felt compelled to shoot something binned x 1 when I realized the seeing was ...

first, a more aesthetically pleasing version in Ha OIII OIII, then the helium: Abell 78 is a rare type of planetary nebula who's exha...

Sharpless-188 (SH2-188, Simeis 22 or the Dolphin Nebula) is one of the largest planetary nebulae known (9 light year diameter).  Extremely f...

Here's NGC 6210, the turtle nebula in hercules: This fairly sharp RGB-OIII image from 2007 shows at least two pairs of jets or ansae ...