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Observers: Mats Dahlgren, Felix Lahulla
Location: European Southern Observatory, La Silla, Chile
Date: August 31 - September 1, 1995 UT

This photo is a false-colour reproduction of the central part of a CCD frame taken with the Dutch 0.90-metre telescope at the ESO La Silla observatory in Chile. The pixel size is 0.44 arcsec and the field measures approx. 1.2 x 1.2 arcmin. North is up and East is to the left. It is a 2-min exposure, taken through a red filtre. It clearly shows the now famous jet extending from the centre towards upper right (North-West).

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Observers: Dave Tholen, Richard Wainscoat
Location: University of Hawaii
Date: September 1, 1995 UT

True-color image from obtained from separate B (blue), V (green) and R (red) exposures from the University of Hawaii's 2.2-meter telescope. The observations were performed by Dave Tholen, and the images were processed and combined into this color composite by Richard Wainscoat. Each exposure was 30 seconds, and the CCD was read out very quickly. Only 57 seconds separate the start of each exposure, meaning that since the comet was moving rather slowly, the movement of the comet was very small. This meant that the stars could be well aligned to make a true-color composite. This image has been color calibrated so that the Sun would appear white. The comet's coma is slightly redder than the Sun; many of the background stars are redder than the Sun. The field shown is 105 x 105 arcseconds, and the seeing is approximately 1 arcsecond.

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Observers: Mark Kidger
Location: Teide Observatory, Canary Islands, Spain
Date: August 15 - September 4, 1995

These images were taken by M.R. Kidger with the IAC80 Telescope (0.82m) pertaining to the Instituto de Astrofisica de Canarias in the Canary Islands, Spain, and they show the arm formation of the comet.

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Observers: Birgitta Nordstrom, Hector Vega
Location: European Southern Observatory, La Silla, Chile
Date: September 5, 1995

ESO image of the spectrum of Comet Hale-Bopp obtained with a CCD on the Boller & Chivens spectrograph at the ESO 1.5-metre telescope at La Silla. The exposure lasted 30 minutes and the slit was placed in the East-West direction. The spectrum covers the region from about 3848 A (left) to 4841 A (right). The scale is linear and the pixel size in the direction of dispersion is 3 A.

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Observers: Francesca Figueras, David Galadi-Enriquez
Location: Calar Alto Observatory, Spain
Date: September 7, 1995 19:14-19:31 UT

Addition of two images obtained with Jonhson's R filter, with exposition times of 200s for both of them.

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Observers: Francesca Figueras, David Galadi-Enriquez
Location: Calar Alto Observatory, Spain
Date: September 8, 1995 UT

First Image: Addition of three images obtained with Jonhson's R filter, with exposition times of 120, 390 and 300s. Field height: 2 arcmin. Comments: it is easily seen a satellite trail westwards from the comet.

Second Image: 332s of exposition time. Beginning Field width: 2 arcmin. Comments: the faint spiral arm can be glimpsed in north-west direction from the nucleus.

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Observers: Francesca Figueras, David Galadi-Enriquez
Location: Calar Alto Observatory, Spain
Date: September 10, 1995 UT

First Image: Additon of three images taken with Jonhson's R filter, with exposition times of 200, 250 and 200s. Field width: 2 arcmin. Comments: in the images obtained this night, the cometary coma extends on a sky zone occupied by several stars whose brightness is similar to thar of the comet itself. So, the coma is difficult to see. Another feature can be seen north-eastwards from the nucleus, something that could resemble a second jet. But most probably this is an effect of the presence of two or three background faint stars.

Second Image: Addition of two images taken with Jonhson's I filter, with exposition times of 219 and 250s. Beginning times: 19:37 and 19:42.

100K 86K
Observers: Adam Block, Carl Hergenrother
Location: Steward Observatory, Arizona
Date: September 12, 1995 00:20 UT

Image taken with the 21" University of Arizona, Steward Observatory Campus scope and ST6 CCD camera.

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Observer: Ladislav Nemec
Location: Lebanon, New Jersey
Date: September 12, 1995 00:50 UT

Image taken with a Meade LX200 10" f/10, Mead Pictor 416. Exposure was 2 minutes and the field was 9x6 arcminutes.

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Observer: Diego Rodriquez
Location: Madrid, Spain
Date: September 13, 1995

Two jets are visible in this 20-second unfiltered CCD exposure taken with 25 cm reflector f/2. Comet is at mag 10.5. Dia. 40 second of arc. DC 4. 30 second Jet p.a.340 degrees. 20 second Jet p.a.25. degrees N =0 east= 90.

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Observers: Kazuyuki Ito
Location: Sengamine Observatory, Hyogo, Japan
Date: September 15, 1995 1134 UT

30 second exposure taken with a 0.20-m f/6.0 Reflector.

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Observer: Antonio Jose Cidadao
Location: Oeiras, Portugal
Dates: September 16-17, 1995

Images taken with a Schmidt-Cassegrin, Meade LX200, 10", f/10, equatorially mounted.

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Observers: Salvador Sanchez, Antonio Garcia
Location: Observatorio Astronomico de Mallorca, Costitx, Spain
Date: September 19-30, 1995

Mosaic of 9 images taken between September 19 and 30, 1995

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Observer: Ralph Pass
Location: Andover, Massachussetts
Date: September 19, 1995 00:39 UT

A Cookbook 245 camera was used with a Meade LX200 8" F/6.3. There was no guiding during the exposure. The bright star (with the bloom or tail) just to the right of the comet is SAO 186576 and is magnitude 8.8. The bright star to its right and at the top edge is 186572 and is magnitude 8.5.

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Observers: Salvador Sanchez, Antonio Garcia
Location: Observatorio Astronomico de Mallorca, Costitx, Spain
Date: September 20-27, 1995

Images taken with S/C 14" f/11.

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Observer: Pedro Re
Location: Portugal
Date: September 1995 - July 1996

All images were obtained from central Portugal with a C14 and HISIS22 CCD Camera.

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Observer: Al Kelly
Location: Danciger, Texas
Date: September 23, 1995

225-second image of Comet Hale-Bopp using a CB245 CCD camera and a 32" f4 Newtonian. Fifteen 15-second exposures were calibrated and co-added.

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Observers: Adam Block, Carl Hergenrother
Location: Steward Observatory, Arizona
Date: September 25, 1995

Image taken with the 21" University of Arizona, Steward Observatory Campus scope and ST6 CCD camera.

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Observers: Hal Weaver
Location: Hubble Space Telescope
Date: September 26-27, 1995

Incredibly, by pure coincidence these HST images were taken shortly after an outburst. The HST images seem to show a clump of dust ~1.4 arcsec from the nucleus. It appears that a substantial (TBD) chunk of material was shed by the nucleus and is disintegrating as it leaves the near-nucleus region. From the HST and Tenerife data we find that the projected velocity of the material is ~30 meters per second.

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Observers: Ricard Casas, Luis Chinarro, Angel Gomez, Luis Manade, Santiago Lopez and Miquel Serra-Ricart
Location: Teide Observatory, Canary Islands, Spain
Date: September 26-28, 1995

These images show the development of what appears to be a new jet in Comet Hale-Bopp (1995 O1). The comet has been observed virtually every night in September and October with the 82cm IAC-80 Telescope in Teide Observatory (Tenerife, Canary Islands, Spain). Sequences of 300s exposures were taken in R for as long as the comet was visible each night (horizon limit approximately 20 degrees altitude).