Full-resolution version

This image shows the green coma and blue gas tail of Comet Lovejoy (C/2014 Q2) and the Pleiades star cluster.

Equipment: Nikkor 85mm f/2 lens/ST-8300C/Paramount ME
F-ratio: f/4
Exposure: 20 minutes
Date: January 16, 2015
Location: Landers, California, USA

Full-resolution version

For this image, the mount followed the comet's motion across the background stars, which resulted in trailing of the star images.

Equipment: Nikkor 300mm f/4 lens/ST-8300C/Paramount ME
F-ratio: f/5.6
Exposure: 20 minutes
Date: January 16, 2015
Location: Landers, California, USA

Full-resolution version

Equipment: Nikkor 85mm f/2 lens/ST-8300C/Paramount ME
F-ratio: f/4
Exposure: 20 minutes
Date: February 21, 2015
Location: Landers, California, USA