Astro Home

Welcome to my Astro Home! I will try to document my astronomy activites on these pages, so you might want to check back from time to time. If you want to comment on anything, don't hesitate to to me.
Legal notice: All images, video or text on this website is Copyright (c) Carsten A. Arnholm. Any commercial use of this information requires an advance, written permission from me. Please contact . Merk: Alle bilder, video eller tekst på dette webstedet er Copyright (c) Carsten A. Arnholm. All kommersiell bruk av denne informasjonen forutsetter skriftlig forhåndstillatelse. Kontakt .

Latest images

12 May, 2008
The planets could be modulating solar activity
I have made a simulator to visualise the orbit of the Sun around the centre of mass of the solar system. Interestingly, this seems to be quite a bit more complex than many may realise. In particular there are patterns of ordered and disordered states that might be a key to explain the observed long term variability of the Sun. Click the screenshot for more information.

04 May, 2008
Solar Cycle 24 sunspot

Captured using wxAstroCapture using C8 with full aperture Baader astrosolar film and Philips ToUcam 740k in prime focus (F10).

A full disk image indicating the spot location can be seen here. (FS60C and Coolpix 995)

24 Feb, 2008
wxAstroCapture 1.1

A new updated version of wxAstroCapture supporting both Windows and Linux has been released.
The program now supports Artemis/ATK cameras and webcam autoguiding. More details and
download on the wxAstroCapture page.

09 Nov 2007
NGC 206
Star forming region in Andromeda, 2.5 million light years away.

03 Nov 2007
Comet 17p/Holmes

04 Sep 2007
NGC 7635
Bubble Nebula

04 Sep 2007
IC 1396
Elephant's Trunk

04 Sep 2007
Sh2-101
Tulip nebula

01 Sep 2007
IC1318

31 Aug 2007
IC5070
Pelican nebula

28 March, 2007 Saturn

22 Jan, 2007
NGC 2264, Cone Nebula

05 Jan, 2007
ImageTOOLSca 3.0, new version released!

Now with automatic alignment and stacking More info and download here.

Fast processing.
Fully automatic, no need to select alignment star.
Supports translation, rotation and scaling alignments.
Automatic resampling allows stacking of images with different binning.
Each aligned frame may be saved separately.
Save to 16 bit or 32 bit FITS for max dynamic range.

Example stacked image: IC410
C8 @ f6 using Artemis 285 camera
15x240s (2x2 binning)
16x240s (1x1 binning)

Dec 27, 2006
M1 in Ha

Nov 19, 2006
Leonids

Nov 14, 2006
M33 in Triangulum

Oct 08, 2006
NGC7822 in Cepheus

Aug 30, 2006
NGC7635
Bubble nebula
C8 @ f6
Artemis 285. LRGB
Image Calibration in ImageTOOLSca

Aug 30, 2006
M27 LRGB
C8 @ f6
Artemis 285. LRGB
Image Calibration in ImageTOOLSca

03 August, 2006
Cocoon Nebula (IC5146)
in H-alpha

April 16, 2006
Abell 2065
Cluster of galaxies 1,500,000,000 Light years away.
(Click image for full size)

April 16, 2006
Animation and still image of comet 73P Schwassmann-Wachmann fragment C, seen from Norway
(Click image for animation)

February 24, 2006
M35 and NGC 2158
(Click image for full size)

January 28, 2006
NGC 2237, the Rosette Nebula

October 16. 2005
I have released my review of the Artemis 285 CCD camera.

October 3. 2005
I participated in a solar eclipse webcast
See the time-lapse replay video of the eclipse.
I operated the "Heggedal" cameras. Heggedal is my home ~30km south of Oslo, Norway. I also assisted the Spain team with software and other feedback.

Lunar eclipse 28 Oct 2004: See the Time-Lapse animation (1.3MB AVI DivX)
See also the animation from Lunar eclipse 08-09 Nov 2003 (9.3MB MPEG).

12 May, 2008	The planets could be modulating solar activity I have made a simulator to visualise the orbit of the Sun around the centre of mass of the solar system. Interestingly, this seems to be quite a bit more complex than many may realise. In particular there are patterns of ordered and disordered states that might be a key to explain the observed long term variability of the Sun. Click the screenshot for more information.
04 May, 2008	Solar Cycle 24 sunspot Captured using wxAstroCapture using C8 with full aperture Baader astrosolar film and Philips ToUcam 740k in prime focus (F10). A full disk image indicating the spot location can be seen here. (FS60C and Coolpix 995)
24 Feb, 2008	wxAstroCapture 1.1 A new updated version of wxAstroCapture supporting both Windows and Linux has been released. The program now supports Artemis/ATK cameras and webcam autoguiding. More details and download on the wxAstroCapture page.
09 Nov 2007 NGC 206 Star forming region in Andromeda, 2.5 million light years away.
03 Nov 2007 Comet 17p/Holmes
04 Sep 2007 NGC 7635 Bubble Nebula
04 Sep 2007 IC 1396 Elephant's Trunk
04 Sep 2007 Sh2-101 Tulip nebula
01 Sep 2007 IC1318
31 Aug 2007 IC5070 Pelican nebula
28 March, 2007 Saturn
22 Jan, 2007 NGC 2264, Cone Nebula
05 Jan, 2007	ImageTOOLSca 3.0, new version released! Now with automatic alignment and stacking More info and download here. Fast processing. Fully automatic, no need to select alignment star. Supports translation, rotation and scaling alignments. Automatic resampling allows stacking of images with different binning. Each aligned frame may be saved separately. Save to 16 bit or 32 bit FITS for max dynamic range. Example stacked image: IC410 C8 @ f6 using Artemis 285 camera 15x240s (2x2 binning) 16x240s (1x1 binning)
Dec 27, 2006 M1 in Ha
Nov 19, 2006 Leonids
Nov 14, 2006 M33 in Triangulum
Oct 08, 2006 NGC7822 in Cepheus
Aug 30, 2006 NGC7635 Bubble nebula C8 @ f6 Artemis 285. LRGB Image Calibration in ImageTOOLSca
Aug 30, 2006 M27 LRGB C8 @ f6 Artemis 285. LRGB Image Calibration in ImageTOOLSca
03 August, 2006 Cocoon Nebula (IC5146) in H-alpha
April 16, 2006 Abell 2065 Cluster of galaxies 1,500,000,000 Light years away. (Click image for full size)
April 16, 2006 Animation and still image of comet 73P Schwassmann-Wachmann fragment C, seen from Norway (Click image for animation)
February 24, 2006 M35 and NGC 2158 (Click image for full size)
January 28, 2006 NGC 2237, the Rosette Nebula
October 16. 2005 I have released my review of the Artemis 285 CCD camera.
October 3. 2005 I participated in a solar eclipse webcast	See the time-lapse replay video of the eclipse. I operated the "Heggedal" cameras. Heggedal is my home ~30km south of Oslo, Norway. I also assisted the Spain team with software and other feedback.