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More about my astronomical observations and other hobbies:
Aurora - Meteors - Comets - Music

Four fireballs originating from the same location on the sky?

EN-98 FireballsPosted by Koen Miskotte Sat, December 12, 2015 12:55:02

On December 8 (02:46:02 UT), December 9 (02:39:22 UT), December 11 (22:06:38 UT) and December 12 (03:25:41 UT) my all sky captured four fireballs. They seems the originate from one location at the sky. I made a composition of the three brightest fireballs. see picture below.

Picture 1. Composition made of three fireballs captured on December 8 (02:46:02 UT), December 9 (02:39:22 UT), December 11 (22:06:38 UT) and December 12 (03:25:41 UT). Click on the image for a better resolution.

The three fireballs are visible as tracks which are interrupted by the rotating sector. It therefore seems that the fireballs appear to originate from the same region of the sky (so called radiant). You can see this by extending the tracks backwards. The backward extended meteor tracks intersect in an area of the sky where the radiant of the December Monocerotids lies. So it is possible that these fireballs ar December Monocorotids!

Picture 2. Crop of previous image and the radiant of the December Monocerotids. Click on the image for a better resolution.

Several CAMS stations have also recorded these fireballs and the simultaneous calculations can hopefully then give a definitive answer about the origin of these fireballs.





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2015-12-12 04:06:04 UT: bright meteor magnitude -3

EN-98 FireballsPosted by Koen Miskotte Sat, December 12, 2015 12:22:50

During the night of December 11/12, 2015 my all sky camera captured three bright meteors, this is the third one.

Picture 1. Crop of an all sky image with the bright meteor of December 12, 2015 at 4:06:04 UT (timing CAMS Gronau, Carl Johannink).

Camera: Canon EOS 40D
Lens: Sigma 4.5 mm F2.8 EX DC Circulair fish eye
Timer Controller: Canon TC80N3
Exposure time: 89s
Interval: 1 s
ISO: 400
F: 3,2
Date: 12-12-2015
Period UT: 04:06:00-04:07:29
Time UT: 04:06:04 (timing CAMS Gronau).
Classification: xOr or MON?
Constellation: UMA/BOO
Brightness: -3
Simultaneously: CAMS Gronau



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2015-12-12 03:25:41 UT: bright meteor magnitude -3

EN-98 FireballsPosted by Koen Miskotte Sat, December 12, 2015 12:19:18

During the night of December 11/12, 2015 my all sky camera captured three bright meteors. This is the second one.

Picture 1. Crop of an all sky image with the bright meteor of December 12, 2015 at 03:25:41 UT (timing CAMS Gronau, Carl Johannink).

Camera: Canon EOS 40D
Lens: Sigma 4.5 mm F2.8 EX DC Circulair fish eye
Timer Controller: Canon TC80N3
Exposure time: 89s
Interval: 1 s
ISO: 400
F: 3,2
Date: 12-12-2015
Period UT: 03:25:30-03:26:59
Time UT: 03:25:41(timing CAMS Gronau).
Classification: xOr or MON?
Constellation: UMI -> DRA
Brightness: -3
Simultaneously: CAMS Gronau





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2015-12-011 22:06:38 UT: bright fireball

EN-98 FireballsPosted by Koen Miskotte Sat, December 12, 2015 12:12:48

A bright fireball was captured on December 11, 22:06:38 UT (timing all sky video Hengelo, Martin Breukers). I also seems to originate from the same location as the fireballs of December 8 and December 9.

Picture 1. Bright fireball in the evening of December 11, 2015. Click on the image for a larger version.

Camera: Canon EOS 40D
Lens: Sigma 4.5 mm F2.8 EX DC Circulair fish eye
Timer Controller: Canon TC80N3
Exposure time: 89s
Interval: 1 s
ISO: 400
F: 3,2
Date: 11-12-2015
Period UT: 22:06:30-22:07:59
Time UT: 22:06:38 (timing all sky video Hengelo, Martin Breukers).
Classification: xOr or MON?
Constellation: AUR -> CAM
Brightness: -7
Simultaneously: EN-97, all sky video Hengelo



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2015-12-09 02:39:22 UT: magnitude -5 fireball

EN-98 FireballsPosted by Koen Miskotte Sat, December 12, 2015 12:05:18

Winthin 24 hours my all sky camera captured a second firebal, which seems to originate from the same location as the fireball of 8 december.

Picture 1. Bright fireball captured on December 9, 2015 at 02:39:22 UT (timing CAMS Oostkapelle (Klaas Jobse). Click on image for a better resolution.

Camera: Canon EOS 40D
Lens: Sigma 4.5 mm F2.8 EX DC Circulair fish eye
Timer Controller: Canon TC80N3
Exposure time: 89s
Interval: 1 s
ISO: 400
F: 3,2
Date: 08-12-2015
Period UT: 02:39:00-02:40:29
Time UT: 02:39:22 (timing CAMS Oostkapelle).
Classification: xOr or MON?
Constellation: TAU
Brightness: -5
Simultaneously: EN-97, CAMS Oostkapelle (Klaas Jobse), CAMS Holtgensplaat (Piet Neels), VSB, Oostduinkerke (Geert Vandenbulcke), AstroLab IRIS, all-sky Alphen aan den Rijn.





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2015-12-08 02:46:02 UT: magn. -4 fireball

EN-98 FireballsPosted by Koen Miskotte Sat, December 12, 2015 11:54:12

A small fireball was captured with my all sky camera EN-98 on December 8, 2015 at 02:46:02 UT (timing CAMS Alphen aan den Rijn, Robert Haas).

Picture 1. The fireball, a possible xi Orionid of December Monocerotid? Click on the image for a larger version.

Camera: Canon EOS 40D
Lens: Sigma 4.5 mm F2.8 EX DC Circulair fish eye
Timer Controller: Canon TC80N3
Exposure time: 89s
Interval: 1 s
ISO: 400
F: 3,2
Date: 08-12-2015
Period UT: 02:45:00-02:46:59
Time UT: 02:46:02 (timing CAMS Alphen aan den Rijn).
Classification: xOr or MON?
Constellation: AUR -> CAM
Brightness: -4
Simultaneously: EN-97, all sky Alphen aan den Rijn.





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2015-12-06 02:37:45UT: very bright fireball

EN-98 FireballsPosted by Koen Miskotte Sun, December 06, 2015 14:40:37

On december 6, 2015 at 02:37 UT my all sky camera captured a bright fireball of magnitude -8. Despite a cirruscloud cover, the camera had no trouble tot catch it. It was also captured with the CAMS 351 camera.

Picture 1. Bright fireball, despite a lot of thick cirrus. Click on the image for a better resolution.

Picture 2. Crop of image above.

Picture 3. Original image of CAMS 351 camera.

Picture 4. The meteor in the middle is a reflection within the lens system of the camera.

Picture 5. A bright persistent train captured 1 second after the fireball. Despite the heavy cirruscover!

Camera: Canon EOS 40D
Lens: Sigma 4.5 mm F2.8 EX DC Circulair fish eye
Timer Controller: Canon TC80N3
Exposure time: 89s
Interval: 1 s
ISO: 400
F: 3,2
Date: 06-12-2015
Period UT: 02:36:30-02:37:59
Time UT: 02:37:45 (timing CAMS 352 Ermelo).
Classification: SPO-HYD?
Constellation: CNC
Brightness: -8 (flare)
Simultaneously: EN-92 Wilderen, CAMS Gronau



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2015-11-23 05:38:14 UT: northern Taurid fireball with terminal flare magn. -7

EN-98 FireballsPosted by Koen Miskotte Mon, November 23, 2015 18:41:27

After ending the visual observations I noticed a bright flash that lit up the ground and surroundings. It was a Northern Taurid fireball with a terminal flash of at least magnitude -7.

Picture 1. Fireball with many breaks and a flare. Click on the image for a larger version.

Picture 2. Crop of previous image.

Camera: Canon EOS 40D
Lens: Sigma 4.5 mm F2.8 EX DC Circulair fish eye
Timer Controller: Canon TC80N3
Exposure time: 89s
Interval: 1 s
ISO: 400
F: 3,2
Date: 23-11-2015
Period UT: 05:38:00 - 05:39:29
Time UT: 05:38:14 (timing CAMS Alphen aan den Rijn (Robert Haas).
Classification: NTA
Constellation: CAM -> UMA
Brightness: -7 (flare)
Simultaneously: EN-95 Benningbroek (Jos Nijland). EN-97 Oostkapelle (Klaas Jobse), CAMS Alphen aan den Rijn (Robert Haas), VSB all sky camera.






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2015-11-23 04:12:36 UT: Leonid fireball

EN-98 FireballsPosted by Koen Miskotte Mon, November 23, 2015 18:34:52

A bright Leonid captured with my all sky camera EN-98.

Picture 1. Leonid fireball magn. -4 in Ursa Major. See also post http://www.astrorocker.nl/#post229. Click on the image for better resolution.

Picture 2. Crop of previous image.

Camera: Canon EOS 40D
Lens: Sigma 4.5 mm F2.8 EX DC Circulair fish eye
Timer Controller: Canon TC80N3
Exposure time: 89s
Interval: 1 s
ISO: 400
F: 3,2
Date: 23-11-2015
Period UT: 04:12:30 - 04:13:59
Time UT: 04:12:36 (timing CAMS 313 Gronau (C. Johannink) & CAMS 352.
Classification: LEO
Constellation: UMI
Brightness: -4
Simultaneously: CAMS 313 Gronau

Picture 3. Leonid captured withCanon 40D and a Sigma 4.5mm F2.8 EX DC Circular Fisheye HSM lens.

Picture 4. Leonid captured with Canon EOS 6D and a Canon EF 8-15 mm F4,0L fish eye lens.

Picture 5. Also CAMS 352 camera captured the Leonid fireball.

Comparison of the Leonid of 23 november 2015 at 4:12:36 UT. The Leonid was photographed with the Canon EOS 6D (with a Canon EF 8-15 mm F4,0L fish eye lens) and the Canon EOS 40D (with a Sigma 4.5mm F2.8 EX DC Circular Fisheye HSM lens).





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Dusttrail of Comet 55P/Tempel-Tuttle

MeteorsPosted by Koen Miskotte Mon, November 23, 2015 17:19:17

During the night of 22/23 november 2014 I could observe a couple of hours from the Groevenbeekse Heide. This to see if the dusttrail of Comet 55P/Tempel-Tuttle from the year 636 shows some activity in the form of Leonid meteors. I counted some Leonids from 1 to 4 an hour. All Leonids were weak, but one was a beautiful magn. -2. In total I counted 48 meteors, amongst them 11 Leonids, 3 alpha Monocerotids and 3 Northern Taurids.
I took with me to the heath a Canon EOS6D equipped with a Canon EF 8-15 mm F4.0 USM lens ye fish. The camera captured 4 meteors, including two Leonids of magnitude -2 and -4. It was also captured with my all sky camera EN-98. This is a Canon EOS 40D with a Sigma 4.5 circular fish eye lens and a rotating shutter. And last but not least also my CAMS camera 352 captured this Leonid. Here are some pictures of this night.

Picture 1. At 02:43 UT a Leonid of magnitude -2 in Camelopardalis and Auriga. Click on the image to see the whole picture. Camera: Canon EOS6d with a Canon EF 8-15 mm F4L fishe eye lens. ISO: 1250, F 4.0, 29s.

Picture 2. At 04:12:36 a bright Leonid of magnitude -4 in Ursa Major ("The Big Dipper"). Click on the image to see the whole image. Camera: Canon EOS6d with a Canon EF 8-15 mm F4L fishe eye lens. ISO: 1250, F 4.0, 29s.

Picture 3: persistent train of the Leonid fireball. Camera: Canon EOS6d with a Canon EF 8-15 mm F4L fishe eye lens. ISO: 1250, F 4.0, 29s.



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