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Comet Hale-Bopp Images - November 1997

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Observer: Ian Griffin
Location: Astronaut Memorial Planetarium & Observatory, Cocoa, Florida
Date: November 3, 1997 10:07 UT

46 separate 50 second images of Hale Bopp have been flat fielded and combined to create this image. The image was obtained using a 12 inch Maksutov with 1524mm focal length and no filter. Image is 20 by 15 arc minutes.


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Observer: Ian Griffin
Location: Astronaut Memorial Planetarium & Observatory, Cocoa, Florida
Date: November 4, 1997 09:42 UT

62 separate 50 second images of Hale Bopp have been flat fielded and combined to create this image. The image was obtained using a 12 inch Maksutov with 1524mm focal length and no filter. Image is 30 by 20 arc minutes.


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Observer: Ian Griffin
Location: Astronaut Memorial Planetarium & Observatory, Cocoa, Florida
Date: November 5, 1997 09:50 UT

SINGLE 50 second image of Hale Bopp have been flat fielded to create this image. The image was obtained using a 12 inch Maksutov with 1524mm focal length and no filter. Image is 30 by 20 arc minutes.


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Observer: Ian Griffin
Location: Astronaut Memorial Planetarium & Observatory, Cocoa, Florida
Date: November 6, 1997 09:46 UT

50 separate 50 second images of Hale Bopp have been flat fielded and combined to create this image. The image was obtained using a 12 inch Maksutov with 1524mm focal length and no filter. Image is 30 by 20 arc minutes. This image was taken through a red filter.


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Observer: Ladislav Nemec
Location: Big Cypress, Florida
Date: November 7, 1997 09:50 UT

120 second exposure, ST8, Meade LX200 10 inch. 19x13 arcmins.


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Observer: Ian Griffin
Location: Astronaut Memorial Planetarium & Observatory, Cocoa, Florida
Date: November 8, 1997 09:56 UT

1. 40 separate 50 second images of Hale Bopp have been flat fielded and combined to create this image. The image was obtained using a 12 inch Maksutov with 1524mm focal length and no filter. Image is 30 by 20 arc minutes. This image was taken through a red filter.

2. The image has been processed using an unsharp mask, with mask sigma set to 3.0.


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Observer: Ian Griffin
Location: Astronaut Memorial Planetarium & Observatory, Cocoa, Florida
Date: November 10, 1997 09:24 UT

1. 60 separate 50 second images of Hale Bopp have been flat fielded and combined to create this image. The image was obtained using a 12 inch Maksutov with 1524mm focal length and no filter. Image is 30 by 20 arc minutes.

2. The image has been processed using an unsharp mask, with mask sigma set to


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Observer: Hal Weaver
Location: Hubble Space Telescope, Earth Orbit
Date: August 27, 1997 - February 19, 1998

The above figure shows the post-perihelion images of Hale-Bopp obtained with the Space Telescope Imaging Spectrograph (STIS) on the Hubble Space Telescope (HST). Each frame is only 1.25 x 1.25 arcsec in size (25 x 25 CCD pixels), which means that we are focussing here on the innermost regions of the coma. The horizontal bar in each case subtends a distance of 500 km at the comet.

All three images have been normalized to the same peak brightness and displayed using the same logarithmic intensity stretch. There has been no image processing to enhance, for example, any coma jets or shell structures that might be present. The images have not been rotated to a common orientation because that would involve resampling the images, which leads to degradation of the resolution. Instead, the compasses show the celestial orientation of each image.


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Observer: Ian Griffin
Location: Astronaut Memorial Planetarium & Observatory, Cocoa, Florida
Date: November 15, 1997 09:24 UT

26 separate 50 second images of Hale Bopp have been flat fielded and combined to create this image. The image was obtained using a 12 inch Maksutov with 1524mm focal length and no filter. Image is 30 by 20 arc minutes. This is an integrated white light image.


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Observer: Ian Griffin
Location: Astronaut Memorial Planetarium & Observatory, Cocoa, Florida
Date: November 17, 1997 09:24 UT

1 60 second image of Hale Bopp has been flat fielded to create this image. The image was obtained using a 12 inch Maksutov with 1524mm focal length and no filter. Image is 30 by 20 arc minutes.


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Observer: Ian Griffin
Location: Astronaut Memorial Planetarium & Observatory, Cocoa, Florida
Date: November 18, 1997 09:34 UT

1 60 second image of Hale Bopp has been flat fielded to create this image. The image was obtained using a 12 inch Maksutov with 1524mm focal length and no filter. Image is 30 by 20 arc minutes.


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Observer: Alberto Quijano Vodniza
Location: Mayaguez, Puerto Rico
Date: November 22, 1997 09:46:56 UT

Image was taken with a ST-6 CCD camera through a 16 inch, F10 reflector with 20 sec exposure. Image was processed with MIRA software.


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

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