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Comet Hale-Bopp Images - April 1997

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Observers: Jean Lecacheux, Francois Colas
Location: Pic du Midi Observatory, France
Date: April 15, 1997 UT

The images were taken with a Gunn 6 filter on April 14th and April 15th. They show rapid change in the inner coma. The more interesting new evolution is the apparition a an helicoidal dust jet even at the opposite side of the sun.


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Observers: Francois Colas, Jean Lecacheux
Location: Pic du Midi Observatory, France
Date: April 15, 1997

As the sunlighted cometary dust observed through different broadband filters in the visible spectrum exhibits the same spatial repartition of luminosity, it is possible to cancel the dust tail accurately by subtracting two CCD images taken in different colours, providing that we have chosen the good cooefficient of proportionality. Here we have subtracted a R image to a B image, the result of the process is an enhancement of the ion tail, whose brightness is manly due to the blue-violet CO+ emissions. Although modern photographic emulsions give excellent detection of the external ion tail, its near-nucleus part is hopelessly drowned in a ocean of light due the dust luminosity. Only computer processing of CCD images can restore it.


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Observer: Bob Yen
Location: Mojave Desert, California
Date: April 15, 1997


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Observer: Rainer Timm
Location: Planegg, Germany
Date: April 15, 1997

Nikon EM Kodak Pro Gold 400 20 sec 50mm f1.4.


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Observer: Tom Newport
Location: Fenton, Michigan
Date: April 15, 1997

1. This image was taken with a Canon AT-1 with a 100 mm lens at f1.8 for 18 seconds on Fuji 800 Plus film.

2. This image of Hale-Bopp was taken with a Canon AT-1 with a 250 mm lens at f3.5 for 20 seconds on Fuji 800 plus.


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Observer: Bob Melton
Location: Oklahoma City, Oklahoma
Date: April 15, 1997

Minolta XK 35 mm camera. The pictures were taken with a 28 mm lens, 50 mm lens, 100 mm lens, and a 200 mm lens. The film was Fuji 800.


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Observer: Joe Gerry
Location: Plum Island, Newbury, Massachusetts
Date: April 15, 1997

Fuji super G 800 film, Nikon 6006 camera with Quantary 70-300mm zoom lense and 7 second exposure time.


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Observer: Brian Josephson
Location: Cambridge, United Kingdom
Date: April 15, 1997


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Observer: Nicholas DelRaso
Location: Wright-Patterson AFB, Dayton, Ohio
Date: April 15, 1997

Image was taken using a Rico 35 mm camera with a 200X Zoom lens mounted on a tripod. Black and White Kodak 400 Pan X film was used. Exposure was ~40 sec at f/3.5.


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Observer: Lasse Olsson
Location: Uddevalla, Sweden
Date: April 15, 1997 00:00 UT

1. Film Fuji 400 Canon EOS 1 28-70 30 sek. 15 april time 24.00.

2. Film Fuji 400 Canon Eos 1 Fisheye 16 mm 30 sek. 15 april 24.00.

3. Fuji 400 Canon EOS 1 80-200 30 sek. 15 april 24.00.


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Observers: Alberto Quijano Vodniza, Jose Alonso
Location: Mayaguez, Puerto Rico
Date: April 15, 1997 00:05 UT

The first image was taken with a ST-6 CCD camera through a 5 inch, F10 reflector. 1.0 sec exposure. The field of view is 23.1 X 17.4 arc min.

The second image was taken with a ST-6 CCD camera through a 16 inch, F10 reflector. 0.5 sec. exposure . The field of view is 7.3 X 5.5 arc min.


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Observer: Ralph Pass
Location: Andover, Massachussetts
Date: April 15, 1997 00:13-02:07 UT

This is a montage of three images taken about an hour apart. The images show the rotation of Hale-Bopp. A Meade Pictor 416 was used with a Meade 10" F/6.3 LX200 for these 2 second exposures.


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Observer: Stephane Potvin
Location: St-luc Dorchester, Quebec, Canada
Date: April 15, 1997 00:32 UT

This is a 1 second exposure at prime focus of 6'f7 Astro-physic refractor whit SBIG ST-7 ccd.


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Observer: George Varros
Location: Mt. Airy, Maryland
Date: April 15, 1997 00:32, 01:03 UT

First image:
1/4, 1/2 & 1 second images 8" SCT EDC-1000 CCD.
Unsharp masked applied.

Second image:
Comments: 1 second images, left 00:32 right 01:03 UT. 8" SCT f.10,
EDC-1000 CCD. Observable rotation in 31 minutes.

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Observer: Elliot Gould
Location: McKinney, Texas
Date: April 15, 1997 00:35 UT

Nikon 43-86 mm zoom lens set at 43 mm, f2.8, 60 sec exposure, on Kodak Royal Gold 400.


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Observer: Denis Bergeron
Location: Quebec, Canada
Date: April 15, 1997 01:00 UT

Images taken with a Meade SCT 10" F10 (FL:2500mm). I used a CCD camera SBIG ST6 and have taken 66 images exposed 1 sec each (Total exposure= 66 sec). All the 66 images were added and processed by unsharp masking and other processing technics. The blue color was added to increase the appearance of the comet and is not the real color of Hale-Bopp.


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Observer: Darrell Cochran
Location: Alexandria, Virginia
Date: April 15, 1997 01:20, 01:40 UT

1. Exposure: Ricoh Xr10, 50mm lens @ f2, Fuji SuperG 800 ~16 seconds. Just after sunset, the comet outshines the evening star.

2. Exposure: Ricoh Xr10, 50mm lens @ f5.6, Fuji SuperG 800 ~30-40 seconds.


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Observer: Mike Garnsey
Location: Pierrepont Manor, New York
Date: April 15, 1997 01:20 UT

Pentax W/40mm, Fuji Super G 800, 30 seconds.


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Observer: William Griffiths
Location: Marietta, Ohio
Date: April 15, 1997 01:49, 02:30 UT

Both images were taken with a Canon Elan 2E camera with a 28mm to 80mm zoom lens.


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Observer: Donato O. Cacciapaglia
Location: Sinking Creek Mountain, Craig County, Virginia
Date: April 15, 1997 01:50 UT

210 mm f/4.0 20 sec Fuji 1600.


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Observer: Patrick Dyer
Location: San Antonio, Texas
Date: April 15, 1997 01:50, 02:34 UT

1. Pentax K-1000, projection from 18-mm eyepiece on Criterion RV-6 (6", f/8 Newtonian). Fuji 800, 5 seconds clockdriven ("hat trick").

2. Pentax K-1000, f/2, 50-mm with 2x teleconverter. Kodak 400, 30 seconds piggyback on clockdriven Criterion RV-6.


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Observers: Glenn Ray, Richard Bannerman
Location: Sealy, Texas
Date: April 15, 1997 02:00-02:01:30 UT

Camera:     Pentax Super ME (35mm), 50mm f/2.8
Film:       Fuji SG 800, hypersensitized
Exposure:   15 & 30 seconds
Time:       02:00:00 and 02:01:30 UT (21:00 CDT)
Notes:      Guided (PB on 8" SCT).

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Observer: David Hanon
Location: Fort Oglethorpe, Georgia
Date: April 15, 1997 02:15 UT

The image is a 30 second exposure on Fuji Super HG 400 film with a 50mm lens at f/2.0. About 15 degrees of the gas tail can be traced out and the pink object above and to the left of the comet is the California Nebula.


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Observer: H.T. Van Housen
Location: Burlington, Wisconsin
Date: April 15, 1997 02:50 UT

Lens setting 200mm@45sec. This photo was 3 exposures of 15 sec each. Equipment used Canon EOS Rebel w/ EF 80-200 zoom lens.


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Observer: Calvin Hill
Location: Grand Prairie, Texas
Date: April 15, 1997 04:05-04:15 UT

1. Comments: first attempt at true-color imaging, IR exclusion filter, processed with Color 245. Exposure: 1 sec. red filter, 6 sec. green filter, 15 sec. blue filter.

2. Comments: broadband nebula and IR exclusion filter. Exposure: 4 secs.

3. Comments: #25 red filter and IR exclusion filter. Exposure: 2 secs.


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Observer: Mike Cecile
Location: Calgary, Alberta, Canada
Date: April 15, 1997 04:45 UT

210 mm telephoto on guided telescope, 400 ASA Kodakrome slide film, 12 minute exposure.


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Observer: Paul Cichocki
Location: Rhyolite, Nevada
Date: April 15, 1997 05:35, 05:55 UT

1. 50 mm lens, fuji super G 800 film.

2. 28mm lens, fuji super G 800 film.


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Observer: Paul Cichocki
Location: I-95 Freeway near Las Vegas, Nevada
Date: April 15, 1997 05:45 UT


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Observer: Paul Cichocki
Location: Rhyolite, Nevada
Date: April 15, 1997 06:10 UT

1st image is of a train caboose at the edge of the ghost town. lighting was from a streetlamp nearby. 28mm lens, 50 second exposure, fuji super G 800 asa print film.

2nd Image is of a building. I light painted the inside of the old bank building with a video camera light and colored gels. 28mm lens, 40 second exposure, fuji super G 800 asa print film


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Observer: Paolo Bussola
Location: Pacengo, Garda Lake, Italy
Date: April 15, 1997 19:45 UT

20 seconds exp. on Scotch Chrome 800-3200P. First image: 28 mm Minolta lens at f2.8; the others: 50 mm Minolta lens at f2.


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Observer: Fred Stauffer
Location: St.Urban LU, Switzerland
Date: April 15, 1997 20:00 UT

Camera: Olympus OM-2n, 50mm/f=1.4 lens, Kodak Royal Gold 1000. Exposure time 5 sec.


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Observer: Herman Mikuz
Location: Crni Vrh Observatory, Slovenia
Date: April 15, 1997 20:00-20:03 UT

Color image of comet Hale-Bopp, taken in moonlight conditions with 20-cm, f/2 Baker-Schmidt camera and Fujicolor 400 SG+ film.


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Observer: Bengt Ask
Location: Svalov, Sweden
Date: April 15, 1997 20:23, 20:42 UT

The first picture was taken at 20.23 UT with a 135 mm lens stopped down to f/4. Exposure time 8 minutes.

The second one was taken at 20.42 UT with a 400 mm lens used wide open at f/5,6. Exposure time 6 minutes.


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Observer: Jan-Erik Tervo
Location: Raisio, Finland
Date: April 15, 1997 21:00 UT

Film: Fuji Super G-800 color negative, camera was a Fujica AX-1 with a 70-210mm Tamron zoom lens at 85mm, f/4, exposure time about 15 second.


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Observer: Yves Dodet
Location: Monnaie de Paris, Paris, France
Date: April 15, 1997 21:08:29 UT

First image was taken with a Pictor 416 camera through a celestron 8. 1.0 sec exposure. Second image is in false color was processed with Meade Epoch 2000ip.


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Observers: Francesca Lucentini, Marco Paolo Pavese
Location: Genoa, Italy
Date: April 15, 1997 21:10, 21:45 PM

1)
FUJI 800 ASA
camera NIKON F4
lens Nikon AFD 500mm+TC14B
F.5,6
TIME 7 sec.

2)
SCOTCH 640T ASA
camera NIKON F4
lens Nikon AFD 50mm
F.1.4
TIME 5 sec.

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Observer: Edgar Rincon
Location: Caracas, Venezuela
Date: April 15, 1997 23:45 UT

Camera fotografica Cannon EOS 1000


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Observers: Dewey Vanderhoff, Mack Frost, Sean Campbell, Andrew Frazier
Location: Wapiti Valley, Wyoming
Date: April 15-16, 1997


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Observer: Dewey Vanderhoff
Location: Wapiti Valley, Wyoming
Date: April 15-16, 1997


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Observer: Theo van de Mortel
Location: Deurne, The Netherlands
Date: April 8-16, 1997

These drawings of the shell structure are based on observations from a 222mm reflector f/6 (104x).


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Observer: Denis Bergeron
Location: Quebec, Canada
Date: April 10-16, 1997

Meade Telescope 10" f10, CCD Camera SBIG ST6.


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Observer: Guy Westscott
Location: Winnipeg, Canada
Date: April 16, 1997

First image shot at 210mm piggybacked on a C5 for 4 minutes using Fuji 1600 at f4. The comet was tracked and the second shot is at prime focus of the C5 for 8 seconds.


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Observers: Francesca Lucentini, Marco Paolo Pavese
Location: Genoa, Italy
Date: April 16, 1997

FUJI 800 ASA, NIKON F4, Nikon AFD 50mm.


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Observer: Alberto Quijano Vodniza
Location: Mayaguez, Puerto Rico
Date: November 9, 1996 - October 11, 1997

Images taken with a ST-6 CCD camera through a 16 inch, F10 reflector.


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Observer: Denis Bergeron
Location: Quebec, Canada
Date: April 16, 1997 00:45 UT

Images taken with a Meade SCT 10" F10 (FL:2500mm). I used a CCD camera SBIG ST6 and have taken 35 images exposed 1 sec each (Total exposure= 35 sec). All the 35 images were added and processed by unsharp masking and other processing technics. The blue color was added to increase the appearance of the comet and is not the real color of Hale-Bopp.


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Observer: Allen Bell
Location: Wells, Maine
Date: April 16, 1997 00:45 UT

Both images were taken with a Nikon F3 using a 105mm f 2.5 Nikkor lens. Images taken on Fuji ISO 1600 print film.


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Observer: Glenn French
Location: Brattleboro, Vermont
Date: April 16, 1997 01:00 UT

50mm, f2.8, 3min exp.


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Observer: Thomas Collin
Location: Quebec, Canada
Date: April 16, 1997 01:00 UT

2 minute exposure with a 200 mm.


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Observer: William Griffiths
Location: Marietta, Ohio & Pleasants County, West Virginia
Date: April 16, 1997 01:00-01:30 UT

Canon Elan 2E camera with a 28mm to 80mm 3.5 to 5.6 lens and kodak gold 1000 speed film. Exp time from 20 to 30 sec.


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Observer: Patrick Dyer
Location: San Antonio, Texas
Date: April 16, 1997 01:00-02:42 UT

1. Pentax K-1000, projection from 18-mm eyepiece on Criterion RV-6 (6", f/8 Newtonian). Kodak 400, 6 seconds clockdriven ("hat trick"). west at top, south at right.

2. Pentax K-1000, projection from 40-mm eyepiece on Criterion RV-6 (6", f/8 Newtonian). Kodak 400, 3 seconds clockdriven ("hat trick"). west at top, south at right.

3. Kodak 400, 60 seconds piggyback on clockdriven Criterion RV-6.


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Observers: Rebecca Price, Patrick Price
Location: Cooper's Rock State Forest, West Virginia
Date: April 16, 1997 01:30 UT


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Observers: Joseph M. Sivo, Joseph R. Sivo, Thomas Sivo
Location: Sunrise Mountain, Stokes State Forest, New Jersey
Date: April 16, 1997 01:30 UT

Both photos were taken using a Pentax k-1000, 50mm lens at f/2.8, Fuji Super HG V 400 ASA film, and 15 second exposures.


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Observer: Jim Yolda
Location: Warrenton, Virginia
Date: April 16, 1997 02:00 UT

Hasselblad 500C/M camera, 80mm f2.8 @ 25 seconds, Kodak PPF 400.


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Observer: David McDavid
Location: Limber Observatory, Pipe Creek, Texas
Date: April 16, 1997 02:24-02:56 UT

This image is a composite of eighteen 60 s exposures of the inner 7 arcmin of the coma of Comet Hale-Bopp, taken in blue light (Johnson B filter with polarizers) 16 with a Photometrics CCD camera (Thomson 512 chip) on the 0.4 m telescope.


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Observer: Spencer Holter
Location: Rochester, Minnesota
Date: April 16, 1997 02:30 UT

Minolta camera, mounted on a tripod, 50mm lens at f2, Kodacolor Gold 400, about 10 seconds exposure.


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Observer: Geoff Simon
Location: Pierre, South Dakota
Date: April 16, 1997 02:55 UT

The photo was taken on Kodak Royal Gold 1000 film, using a 25-second exposure at f 2.0, with the photographer's hand covering the bottom half of the lens for all but the final second of the exposure.


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Observers: Alicia deGroot, Kylene Compaan
Location: Visalia, California
Date: April 16, 1997 10:45-11:30 UT

The pictures were taken with Kodak ISO 1000 at f/2.8 The basketball shot was exposed for 60 seconds. No flash was used. The other two were exposed for 45 seconds.


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Observer: Takashi Nakashima
Location: Kumanmoto Civil Astronomical Observatory, Japan
Date: April 16, 1997 20:34 UT

60 second exposure, Bitrun BT-11C, C-8, 2000mm.


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Observer: Ragnar Johnskaas
Location: Lillehammer, Norway
Date: April 16, 1997 21:00 UT

Kodak Gold 400, 50mm at f/2.8, 30 sec. The foreground illuminated with photoflash.


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Observer: Joe Silke
Location: Dublin, Ireland
Date: April 16, 1997 21:45-22:30

1. 20 seconds at f 2.8 50mm on Fujicolor 800 Super G Plus film.

2. 10 seconds at f 2.8 50mm on Fujicolor 800 Super G Plus film.

3. 10 seconds at f 2.8 50mm on Fujicolor 800 Super G Plus film.


If you would like to submit a new image to this home page, contact:
Ron Baalke
ron@jpl.nasa.gov

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