28 February 2022|Comets, News|

Currently the brightest comet around at about mag. 9. Photometry with ASTAP gives me a V magnitude of 9.7. Animation shows it heading away from the Sun now, after perihelion (1 Feb 2022), tail first.

Object IDComet 19P Borrelly
Details2022-02-26 21:02:22 – 21:42:46
Telescope250mm f4.8 Newtonian
V filter
CameraAtik 460EX @-10°C
Exposure(s)20 x 120s
darks, flats, bias
ProcessingASTAP, Photoshop
19P Borrelly Animation


20 July 2020|Comets, News|

Wrong telescope for a comet of this size (8 degree – only 0.5 degree FOV) but came out quite well. Surprising colour combinations – green coma expected, red tail not. Cloned out the trailed RGB stars in PS.

Object IDC/2020 F3 NEOWISE
Details2020-07-18 23:22UT
Telescope250mm f4.8 Newtonian
CameraAtik 460EX @-15C
Exposure(s)5×30 each RGB
ProcessingSiriL, DSS, Photoshop

Comet 21P/Giacobini-Zinner brightening and tail developing

17 August 2018|Comets, News|

Tail starting to develop and definitely getting brighter

Object ID21P/Giacobini-Zinner
Details2018-08-16 22:09:30 – 22:23:23 UT
Telescope200mm Newtonian f5
CameraZWO ASI290MC
Exposure(s)20 x 15s, 30s delay between exposures
ProcessingNebulosity, Photoshop

Comet 21P/Giacobin-Zinner animation

4 August 2018|Comets, News|

Moving through the constellation of Cassiopeia

Object ID21P/Giacobini-Zinner
Details2018-08-03 22:12 – 22:25 UT
Approx. mag. 9
Telescope200mm Newtonian f5
CameraZWO ASI 290MC
Exposure(s)20 x 10s exposures, 30seconds apart
21P gif animation


8 October 2010|Comets, News|

2010-09-07 21:00 UT
200mm f5 Newtonian SW LPR MPCC
Canon EOS 350D Guided
5x60s 5x90s 3x120s subs darks ISO 800
Processed in Nebulosity, PhotoShop CS5
Also 1 frame to show comet against star field without trailing.

From Wikipedia: Comet Hartley 2, officially designated 103P/Hartley, is a small periodic comet with an orbital period of 6.46 years. It was discovered by Malcolm Hartley in 1986 at the Schmidt Telescope Unit in Siding Spring, Australia. Its diameter is estimated to be 1.2 to 1.6 km. It will be the subject of a flyby by the Deep Impact spacecraft on November 4, 2010, with a closest approach of 700 kilometers. This is part of the EPOXI mission.

And here’s NASA’s view of it from the EPOXI mission.


30 August 2009|Comets|

Some time in 1997?

A blast from the past. Found this scan of a picture I took of Hale-Bopp from the Isle of Arran. Don’t have much info about it but it was taken with a 35mm Praktica and a 135mm lens.

Trees and light pollution are obviously an issue but not too bad. An impressive comet!