This picture of Comet Hyakutake was taken by Adam Block on March 23, 1996 (closest approach) from Empire Ranch (near Tucson, AZ). 50mm camera lens (zoomed out), Exposure time: 15 minutes (guided), Film: Fuji ASA 800, Notes: Disconnection event in tail, Tail extends well outside picture some 10 degrees further.
Another picture of Comet Hyakutake taken by Adam Block on March 23, 1996 (closest approach) from Empire Ranch (near Tucson, AZ). 200mm camera lens (zoomed in), Exposure time: 15 minutes (guided), Film: Fuji ASA 800, Notes: Ionized coma glows green, Parabolic dust tail is yellow...material streams along magnetic field lines easily seen.
Photographed from dark skies at Vega-Bray observatory (Benson, AZ) on Saturday March 16th by Detrick Branston and Mike Terenzoni, using a 300mm lens and Ektachrome P1600 film.
Photographed from just off Highway 83 near Sonoita, AZ, by Scott Gottily, using a 200mm telephoto lens and Kodak TriX 400 film.
Photographed from the parking lot atop Kitt Peak by Ted von Hippel on Monday March 25th, using a 35mm Pentax SLR with 50mm lens and 400 ASA film. In this larger frame (1.2Mb) of the same image the Ursa Minor bowl stars can be seen near the comet, while the Ursa Major handle stars can be seen near the opposite side of the picture.
These comet pictures were taken by Tod R. Lauer using a 35mm camera on a tripod with ASA 1000 color print film on Kitt Peak Mountain. Exposures times were about 30s.