168K 40K
Copyright 1996 Gordon Garradd
Observer: Gordon Garradd
Location: Loomberah, New South Wales, Australia
Date: February 1, 1996 16:58 UT

120 sec exposure. North is up in this 13.5' X 12' field. Taken a 25cm f/4.1 Newtonian and HI-SIS 222.

102K 169K
Observer: R. Casas
Location: Teide Observatory, Canary Islands, Spain
Date: February 4, 1996

Images taken with IAC80 Telecope (0.82m).

101K 60K
Observer: P. Hammerleys
Location: Teide Observatory, Canary Islands, Spain
Date: February 4, 1996

Infrared images taken with Carlos Sanches Telescope (1.5m).

79K 31K
Observer: Tuyasima Takaaki
Location: Kumanmoto Civil Astronomical Observatory, Japan
Date: February 4, 1996

120 second exposure.

42K 42K
Observer: Osamu Ohshima
Location: Bisei Astronomical Observatory, Bisei, Okayama, Japan
Date: February 5, 1996 20:17 UT

Image taken with 1.0-m telescope and SBIG ST-6 CCD camera. 2 minute exposure in the R-band at F/6.

35K 51K
Observers: H. Cabot, F. Colas, S. Jancart, L. Jorda, J. Lecheux
Location: Pic du Midi Observatory, France
Date: February 5, 1996

Observed at the 1.05 m telescope with a Thomson 7863 CCD of 388 x 284 pixels and a focal reducer F/6. The comet was at a heliocentric distance of 2.0 AU and at a geocentric distance of 1.7 AU. The phase angle is 30 degrees.

35K 51K
Observer: Jean-Marie Will
Location: European Southern Observatory, La Silla, Chile
Date: February 9, 1996 08:21 UT

This false-colour was obtained with the DFOSC instrument at the Danish 1.54-metre telescope at the ESO La Silla Observatory. It is a reproduction of a 20-min CCD frame. The instrument was DFOSC with the Danish Loral/Lesser CCD (2052 x2052 pix; field of view 13.3 x 13.3 arcmin). At the time of this observation, the comet was at a distance of 1.52 AU (227 million kilometres) from the Earth and 1.88 AU (281 million kilometres) from the Sun.

133K 59K
Observer: Jean-Marie Will
Location: European Southern Observatory, La Silla, Chile
Date: February 9, 1996 08:00 UT

These false-colour photos were obtained with the DFOSC instrument at the Danish 1.54-metre telescope at the ESO La Silla Observatory. The images have been reproduced from two CCD frames with 6 and 20 min exposure time, respectively. They were obtained through a standard V-filter. The instrument was DFOSC with the Danish Loral/Lesser CCD (2052 x 2052 pix; 0.39 arcsec/pix; field of view 13.3 x 13.3 arcmin). For this presentation, the original CCD frames were bias-subtracted, flat-fielded, cleaned and the field was trimmed to 10.4 x 10.4 arcmin. North is up and East is to the left.

415K 107K
Observer: Jean-Marie Will
Location: European Southern Observatory, La Silla, Chile
Date: February 9, 1996

Image visualizing the bias and flat fielding processes of the 20 min V exposure of comet Hyakutake.

64K 24K
Observers: Don Pollacco, Alan Fitzsimmons
Location: La Palma Observatory, Spain
Date: February 9, 1996

This is a false colour image is a 15 second V-band exposure obtained with the 2.5m Issac Newton Telescope on La Palma.

111K 31K
Observer: Terry Lovejoy
Location: Jimboomba, QLD, Australia
Date: February 11, 1996 15:50 UT

Exposure is 60 seconds with Kodak based CCD camera operating in 2x2 binned mode attached to a Takahashi 16cm f3.3 reflector. The moon is only 10 degrees or less from the comet. Note the beginning of the tail. Field size is 45' x 30'.

281 108K
Observer: Masami Ohkuma
Location: Shirahama, Chiba, Japan
Date: February 11, 1996

Image taken with a Pentac 400mm F2.8 Telephoto lens (F4.0). 10 minute exposure.

39K 8K
Observers: Alessandro Dimai, Giuseppe Menardi
Location: Col Druscie Observatory, Cortina d'Ampezzo, Italy
Date: February 12 03:36 UT

540 second exposure using the CCD Hi-Sis 22 and Telescope Newton 0.5 m f/3.8.

86K 18K

74K 12K
Observers: Tim Puckett, Ingrid Siegert
Location: Villa Rica, Georgia
Date: February 13, 1996 7:58 UT

These images were obtained with a 12" Lx200 working at f/7. This is a 300 second exposure the ST6 camera. North is up and the field is 13.5 x 9.5 minutes.

177K 78K
Observers: Thomas Rauch, Victor Merino
Location: European Southern Observatory, La Silla, Chile
Date: February 13, 1996 08:11-08:18 UT

This false-colour photo demonstrates the asymmetry, now apparent in the coma of Comet C/1996 B2 (Hyakutake). The images to the left are reproductions of two CCD frames obtained with the EFOSC1 instrument at the Cassegrain focus of the ESO 3.6-metre telescope. A total of four exposures were made through four standard optical filtres (U, B, V and R) with exposure times from 20 to 50 seconds; those in B and R are shown here after suitable image processing.

56K 63K
Observers: B. Christophe, O. Dechambre, T. Midavaine, D. Silly, T. Zemmour
Location: Pic du Midi Observatory, France
Date: February 15, 1996 04:30-04:50 UT

The picture on top is the sum of height CCD frames ie a 600 sec total integration time. These were shot with a Hi-SIS 22 (KAF 400 chip, providing 12bit digitalising) at the primary Newton focus of the T60 telescope. This telescope with a primary focal legth of 70 inches (2.1 m) and a 20 inches ( 60 cm ) diameter is provided for amateur astronomers and managed by the Association T60 located in SW France. In an attempt to catch the outer coma, a 2*2 binning process vas used. Each original frame covers an area of 11'.2*7'.3, 384x256, 1.76 arcsec/pixel. The exposures were made without filter. The sky transparency was decent, some snow beeing flying all-around, and the seeing was no less than 2 to 4 arcsecs.

   While the image on top is but a sum, the height original images were processed in order to let the asymmetrie of the coma appear on the lower image: they were enlarged 8 times (ie 1 pixel becomming an 8*8 square)

177K 78K
Observer: David Strange
Location: United Kingdom
Date: February 15, 1996 05:20 UT

This image is a 4x40 sec exposure using a Starlite Xpress + 50cm f/4 Newtonian at 0520h U.T. A bright central condensation is visible. A false colour image reveals a coma offset slightly towards the west It was taken in fairly hazy skies, and at Dec -24deg the seeing conditions were far from perfect. The image has south to the top and is 7x5 arcmin in size.

63K 14K
Observer: David Toth
Location: West Summerland Key, Florida
Date: February 15, 1996 08:48 UT

A 5 min ST6 shot, guided on stars by ST4 ... Astrophysics 7" f/7 refractor.

10K 3K
Observer: Bob Stephens
Location: Lake Arrowhead, California
Date: February 15, 1996 11:06 UT

This is a combination of 3 images using a Celestron C11 at F/3.3. All three images were 5 minutes long. They were then processed using Hidden Image using a log streach to show the inner regions. They were then combined using SkyPro.

57K 19K

53K 22K
Observers: S. Larson
Location: Steward Observatory, Arizona
Date: February 15, 1996

The above image has been processed in two different ways to enhance the visibility of the comet's ion tail (the straight thin line coming out at about 1 o'clock from the nucleus). The image is a 1320 sec exposure taken with the 1.5m Catalina scope.

21K 9K
Observer: Masami Okyudo
Location: Misato Observatory, Japan
Date: February 15, 1996

Image obtained in a CCD camera attached with 105-cm reflector.