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Comets

Comets come and go, and our society likes to keep track of them. Click on our Facebook & Twitter pages for information about the latest comets.

Comets are usually named after their discoverer(s) family name although with science increasingly the result of large team efforts, the name of the team or project can be more appropriate.

2015

Comet Lovejoy C/2014 Q2

Three stunning images.

These two images of Comet Lovejoy were taken by member Gordon Collings on the 16th & 24th January 2015.
Click on the images for a larger view.
COMET LOVEJOY 16012015.jpg
Comet Lovejoy - 16th January 2015. Click on me for a larger view.

COMET LOVEJOY 24012015.jpg
Comet Lovejoy - 24th January 2015 - Click on me for a larger view.


This image of Comet Lovejoy was taken by Chairman Simon Dawes on the 24th January 2015 at the Pavilion, Sutton-at-Hone.
Click on the image for a larger view.
lovejoy stacked PS.jpg
Comet Lovejoy C/2014 Q2 taken on the 24th January 2015 at the Pavilion, Sutton-at-Hone. Click on me for a larger view.




2013

panSTARRS c/2011 L4

details here


2009

Comet 2007 N3 Lulin

COMETS_Lulin_SD1.jpg
Comet Lulin 2009-02-27

640x480 Image
(c) Simon Dawes
2009-02-27
20 x 20s exposure
lulin_contour_mapt.jpg
Contour image of the Lulin's Coma
(c) Martin Crow
2009-02-27
14 x 30s exposure
cometLulinspectraMC01t.jpg
Spectra of comet Lulin
(c) Martin Crow
Lulinmc02t.jpg
Another image by Martin Crow

2008

Comet 17P Holmes

17pcometholmest.jpg
Poster (c) CMHAS
17PHolmes_KR01t.jpg
Comet Holmes, image Keith Rickard, this image is 'Larson - Sekanina' processed to show the radial detail in the coma


holmes01t.jpg
holmes02t.jpg
holmes03t.jpg
holmes04t.jpg
holmes05t.jpg
holmes06t.jpg

2005

Comet 2004 Q2 Machholz

Martin Crow managed to not only image but also create a short animation, as can be seen below.
COMETS_machholz.gif
The images were taken on 2 January 2005 between 20:03UT and 21:23UT. In the animation shows the comet tracking across the sky and its tail dynamically changing shape with a possible hint of a detachmen.

Now for the techie stuff:
Each original image was obtained using a Celestron C8 SCT at f3.3 with a MX916 CCD camera. The exposure was 20 seconds and an interval of 60 seconds between shots. The relatively short exposure was designed to give an unsaturated nucleus so that some photometry might be done on it. All of the images were dark frame subtracted and flat fielded prior to processing. Each of the frames is a group of 5 original images converted into and AVI file and then seriously processed in Registax. The resulting images were then save as JPEGs so that they could be opened in Adobe Photo Shop to align each frame.

Comet C/1995 01 Hale-Bopp

The Great Comet of 1997 imaged by Arthur Cockburn who took the image while visiting Chepstow Castle. A 30second exposure on ISO200 film.
hale_bopp_AC01t.jpg

Two more images of comet Hale-Bopp photographed by Andy Barber taken while at Romney Marsh in Kent. Both images 25second exposures on ISO1600 film.
halebopp_AB01t.jpg
halebopp_AB02t.jpg

Comet C/1996 B2 Hyakutaki

The Great Comet of 1996 imaged by Arthur Cockburn, taken in March 1996 on ISO100 film.
Hyakutaki_AC01t.jpg
Hyakutaki_AC02t.jpg
Hyakutaki_AC03t.jpg

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CMHASD - Comets