* * * * * Image gallery of 17P/Holmes * * * * *


Image by Albert van Duin, Beilen, The Netherlands.
Exposure: stack of 11 180s exposures with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph.
Date: 27 February 2008, 19:39 - 20:16 UT.

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Image by Albert van Duin, Beilen, The Netherlands.
Exposure: stack of 12 300s exposures with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph.
Date: 6 February 2008, 19:26 - 20:28 UT.

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Image by Emiel Kempen, Hoogeveen, The Netherlands.
Exposure: stack of 11 240s images with a modified Canon 350D, set at ISO1600, through a 150mm Meade Schmidt-Newton.
Date: 30 January 2008, 20:20 - 21:06 UT.

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Image by Albert van Duin, Beilen, The Netherlands.
Exposure: stack of 15 120s exposures with a Canon 40D, set at ISO1600, through a 20-cm f/2.75 ASA astrograph.
Date: 30 January 2008, 19:50 - 20:24 UT.

This is a 2x2binned image from the original.
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Image by Albert van Duin, Beilen, The Netherlands.
Exposure: stack of 11 180s exposures with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph.
Date: 12 January 2008, 17:37 - 18:12 UT.

This is a 2x2binned image from the original.
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Note also the presence of quite a few faint galaxies in the field!

Image by Albert van Duin, Beilen, The Netherlands.
Exposure: stack of 5 300s exposures with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph.
Date: 6 January 2008, 20:29 - 20:55 UT.

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Image by Albert van Duin, Beilen, The Netherlands.
Exposure: stack of 6 300s exposures with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph.
Date: 29 December 2007, 19:50 - 20:21 UT.

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Image by Emiel Kempen, Hoogeveen, The Netherlands, with some moonlight interference.
Exposure: stack of 29 120s images with a modified Canon 350D, set at ISO1600, through a 150mm Meade Schmidt-Newton.
Date: 18 December 2007, 17:11 - 18:13 UT.

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Image by Emiel Kempen, Hoogeveen, The Netherlands, with some moonlight interference.
Exposure: stack of 22 180s images with a modified Canon 350D, set at ISO1600, through a 150mm Meade Schmidt-Newton.
Date: 17 December 2007, 17:11 - 18:25 UT.

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Image by Albert van Duin, Beilen, The Netherlands.
Exposure: stack of 12 300s exposures with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph.
Date: 15 December 2007, 22:15 - 23:19 UT.

This is a 2x2binned image from the original.
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Image by Albert van Duin, Beilen, The Netherlands.
Exposure: stack of 12 300s exposures with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph.
Date: 11 December 2007, 18:09 - 19:13 UT.

This is a 2x2binned image from the original.
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Image by Emiel Kempen, Hoogeveen, The Netherlands.
Exposure: stack of 12 300s images with a modified Canon 350D, set at ISO1600, through a 150mm Meade Schmidt-Newton.
Date: 11 December 2007, 17:53 - 18:56 UT.

This is a 2x2binned image from the original.
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Image by Albert van Duin, Beilen, The Netherlands.
Exposure: stack of 5 300s exposures with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph.
Date: 10 December 2007, 17:41 - 18:08 UT.

This is a 2x2binned image from the original.
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Image by Emiel Kempen, Hoogeveen, The Netherlands.
Exposure: stack of 14 120s images with a modified Canon 350D, set at ISO1600, through a 150mm Meade Schmidt-Newton.
Date: 10 December 2007, 16:55 - 17:40 UT.

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Image by Albert van Duin, Beilen, The Netherlands.
Exposure: stack of 5 300s exposures with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph.
Date: 9 December 2007, 17:05 - 17:31 UT.

This is a 2x2binned image from the original.
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Image by Albert van Duin, Beilen, The Netherlands.
Exposure: stack of three images with exposure times of 270s, 120s and 60s, with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph.
Date: 7 December 2007, 18:42 - 19:08 UT.

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Image by Albert van Duin, Beilen, The Netherlands.
Exposure: single 90s exposure with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph.
Date: 1 December 2007, 20:30 UT.

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Image by Emiel Kempen, Hoogeveen, The Netherlands.
Exposure: stack of 27 90s images with a modified Canon 350D, set at ISO1600, through a 150mm Meade Schmidt-Newton.
Date: 1 December 2007, 17:44 - 19:36 UT.

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Marco Langbroek, Leiden, The Netherlands, combined several images taken between 8 and 29 November 2007 with a Canon Digital Ixus 400 at maximum zoom to show the slow movement of 17P through Perseus past Mirfak aka α Persei.

It also nicely shows the increasing size, and decreasing surface brightness.
Nevertheless, visual observers found that the comet was only very slowly decreasing in total brightness over this 3 week period.

Image by Emiel Kempen, Hoogeveen, The Netherlands.
Exposure: stack of 5 180s images with a modified Canon 350D, set at ISO1600, through a 150mm Meade Schmidt-Newton.
Date: 29 November 2007, 19:50 - 20:39 UT.

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Image by Albert van Duin, Beilen, The Netherlands.
Exposure: stack of 2 60s and 2 180s exposures with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph.
A LPR filter was used to reduce the effects of light pollution.
Date: 29 November 2007, 19:17 - 19:27 UT.

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Image by Emiel Kempen, Hoogeveen, The Netherlands, in strong moonlight.
Exposure: stack of 25 60s images with a modified Canon 350D, set at ISO1600, through a 150mm Meade Schmidt-Newton.
Date: 23 November 2007, 17:03 - 17:30 UT.

This is a 2x2binned image from the original.
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Image by Albert van Duin, Beilen, The Netherlands.
Exposure: stack of 7 60s exposures with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph.
A LPR filter was used to reduce the effects of moonlight and light pollution.
Date: 22 November 2007, 19:20 - 19:29 UT.

This is a 2x2binned image from the original.
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Image by Emiel Kempen, Hoogeveen, The Netherlands, in strong moonlight.
Exposure: stack of 20 60s images with a modified Canon 350D, set at ISO1600, through a 150mm Meade Schmidt-Newton.
Date: 22 November 2007, 19:05 - 19:29 UT.

This is a 2x2binned image from the original.
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Image by Emiel Kempen, Hoogeveen, The Netherlands, in strong moonlight, showing 17P moving further away from Mirfak.
Exposure: stack of 20 60s images with a modified Canon 350D, set at ISO1600, through a 150mm Meade Schmidt-Newton.
Date: 21 November 2007, 19:15 - 20:17 UT.

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Image by Albert van Duin, Beilen, The Netherlands, further showing 17P's slow motion past Mirfak.
Exposure: stack of 10 120s exposures with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph.
A LPS filter was used to reduce the effects of moonlight and light pollution.
Date: 19 November 2007, 19:16 - 19:37 UT.

This is a 2x2binned image from the original.
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3D-image by Albert van Duin, Beilen, The Netherlands.

He combined two sets of images obtained on the evening of 17 November 2007 with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph to create this 3D impression.

The first set was made around 19:30 UT, the second set around 21:50 UT.

Image by Albert van Duin, Beilen, The Netherlands, showing 17P again closer to Mirfak than on the previous days.
Exposure: stack of 4 300s exposures with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph.
Date: 17 November 2007, 19:38 - 19:59 UT.

This is a 2x2binned image from the original.
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Image by Albert van Duin, Beilen, The Netherlands, showing 17P moving even closer to Mirfak.
Exposure: stack of 5 60s exposures with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph.
Date: 16 November 2007, 16:56 - 17:02 UT.
Twilight. Note the heavy satellite traffic!

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Image by Emiel Kempen, Hoogeveen, The Netherlands, clearly showing the tenuous nature of the large dustcoma.
Exposure: stack of 15 60s images with a modified Canon 350D, set at ISO800, through a 150mm Meade Schmidt-Newton.
Date: 15 November 2007, 18:09 - 18:53 UT.

This is a 2x2binned image from the original.
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Image by Emiel Kempen, Hoogeveen, The Netherlands, with longer exposure time to bring out the full extent of the coma.
Exposure: stack of 3 600s images with a modified Canon 350D, set at ISO800, through a 150mm Meade Schmidt-Newton.
Date: 15 November 2007, 18:09 - 18:53 UT.

This is a 2x2binned image from the original.
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Image by Albert van Duin, Beilen, The Netherlands, showing 17P close to Mirfak.
Exposure: single 300s exposure with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph.
Date: 15 November 2007, 18:22 - 18:27 UT.

This is a 2x2binned image from the original.
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Image by Emiel Kempen, Hoogeveen, The Netherlands, showing mainly the dust component of 17P.
Exposure: stack of 13 60s images with a modified Canon 350D, set at ISO800, through a 150mm Meade Schmidt-Newton.
Date: 12 November 2007, 17:23 - 17:48 UT.

This is a 2x2binned image from the original.
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Image by Albert van Duin, Beilen, The Netherlands, showing the dust component of 17P.
Exposure: stack of 6 10s exposures with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph.
Date: 11 November 2007, 20:05 - 20:38 UT.

This is a 2x2binned image from the original.
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Image by Albert van Duin, Beilen, The Netherlands, showing the very faint outer coma. Note also the very faint blue glow of the disconnected gastail near the upper right edge!
Exposure: stack of 6 300s exposures with a modified Canon 350D, set at ISO800, through a 20-cm f/2.75 ASA astrograph.
Date: 11 November 2007, 20:05 - 20:38 UT.

This is a 2x2binned image from the original.
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Image by Jean-Marie Biets, Wilderen, Belgium, showing the dust component of 17P.
Exposure: 60s with a Canon 10D, set at ISO1600, through a 150mm f/8 refractor.
Date: 11 November 2007, around 20:45 UT.

This is a 2x2binned image from the original.
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Image by Emiel Kempen, Hoogeveen, The Netherlands, showing the dust component of 17P.
Exposure: stack of 5 20s images with a modified Canon 350D, set at ISO1600, through a 150mm Meade Schmidt-Newton.
Date: 11 November 2007, 18:34 - 18:55 UT.

This is a 2x2binned image from the original.
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Another image by Emiel Kempen taken with the same equipment and settings; this is a stack of 5 300s images to bring out the faint outer coma.
Date: 11 November 2007, 18:56 - 18:57 UT.

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Image by Emiel Kempen, Hoogeveen, The Netherlands, showing a distorted gastail.
Exposure: 10 minutes with a modified Canon 350D, set at ISO800, through a 150mm Meade Schmidt-Newton.
Date: 7 November 2007, 21:20 UT.

The image was obtained during a brief clear period.
The distorted form of the tail signals the start of a Disconnection Event.

This is a 2x2binned image from the original.
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Image by Emiel Kempen, Hoogeveen, The Netherlands, showing the dust component of 17P.
Exposure: stack of images with the following exposure times: 7x20s, 6x30s, 13x60s and 6x120s, with a modified Canon 350D, set at ISO800, through a 150mm Meade Schmidt-Newton.
Date: 6 November 2007, 18:10 - 19:41 UT.

During imaging there was occasional cloud interference.
Note the differences withe the exposures of 30 October!

This is a 2x2binned image from the original.
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The same image by Emiel Kempen, but now processed to bring out the faint outer coma.
For details see above.

This is a 2x2binned image from the original.
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Image by Emiel Kempen, Hoogeveen, The Netherlands, showing the dust component of 17P.
Exposure: stack of sets of 10 images with exposure times of 2s, 5s, 10s, 20s, 30s 40s 50s and 60s with a modified Canon 350D, set at ISO800, through a 150mm Meade Schmidt-Newton.
Date: 30 October 2007, 20:04 - 21:58 UT.

This is a 2x2binned image from the original.
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The same image by Emiel Kempen, but now processed to bring out the faint outer coma.
For details see above.

This is a 2x2binned image from the original.
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Processed image by Albert van Duin, Beilen, The Netherlands, showing a couple of faint streamers.
Exposure: stack of 29 20s exposures with a modified Canon 350D, set at ISO1600, through a 20-cm f/2.75 ASA astrograph.
Date: 30 October 2007, 18:19 - 18:39 UT.

This is a 2x2binned image from the original.
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Image by Carl Johannink observing in the countryside 5 km north of Gronau, Germany.
Exposure: 10s with a Canon 10D camera fitted with a 17-35mm/f2.8 zoomlens set at 17mm.
Date: 30 October 2007, 19:08 UT.

Image by Carl Johannink observing in the countryside 5 km north of Gronau, Germany.
Exposure: 2s with a Canon 10D camera fitted with a 200mm/f2.8 lens.
Date: 30 October 2007, 18:45 UT.

Image by Edwin van Dijk from our usual site near Sint Annen.
Exposure: 30s with a Canon 350D camera set at ISO1600 fitted with a 18mm/f3.5 lens.
Date: 30 October 2007, 18:16 UT.

This is a 2x2binned image from the original.
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