Home

The Sun

 Up one level

Stor solflekk 15.06.2012

Huge sunspots June 15th 2012

Just about a week after the transit of Venus the Sun prepared another great display, the emergence of sunspot 1504. So larrge that it was visible with the un-aided eye (but with proper filter of course). Below are some photos from the 14th and 15th of June.

Sun on June 15 2012

Stor solflekk (1504) 15. juni 2012, kl. 06:55

Kamera: Point Grey Research Chameleon 1.3 Megapixel monokrom.
Teleskop: Borg ED101 F6,4 refraktor + TeleVue 2,5X Powermate (1600mm brennvidde).
Lunt solar wedge og Omega Optical filter TiO 705nm.

Huge sunspot (1504) June 15, 2012, 06:55 UT+2

Camera: Point Grey Research Chameleon 1.3 Megapixel monochrome.
Telescope: Borg ED101 F6,4 refractor + TeleVue 2,5X Powermate (1600 focal length).
Lunt solar wedge and Omega Optical filter TiO 705nm.

Sun on June 15 2012

Stor solflekk 15. juni 2012, kl. 06:26

Kamera: Point Grey Research Chameleon 1.3 Megapixel monokrom.
Teleskop: Mini Borg ED60 F5,8 refraktor (350mm brennvidde).
Lunt solar wedge og Omega Optical filter TiO 705nm.

Huge sunspot June 15, 2012, 06:26 UT+2

Camera: Point Grey Research Chameleon 1.3 Megapixel monochrome.
Telescope: Mini Borg ED60 F5,8 refractor (350mm focal length).
Lunt solar wedge and Omega Optical filter TiO 705nm.

Sun on June 15 2012

Stor solflekk 15. juni 2012, kl. 06:34

Kamera: Point Grey Research Chameleon 1.3 Megapixel monokrom.
Teleskop: Borg ED101 F6,4 refraktor (640mm brennvidde).
Lunt solar wedge og Omega Optical filter TiO 705nm.

Huge sunspot June 15, 2012, 06:34 UT+2

Camera: Point Grey Research Chameleon 1.3 Megapixel monochrome.
Telescope: Borg ED101 F6,4 refractor (640mm focal length).
Lunt solar wedge and Omega Optical filter TiO 705nm.

Sun on April 22 2012

Stor solflekk 14. juni 2012, kl. 21:37

Kamera: Canon EOS450D, enkeltesponering, 1/250s, 400ISO

Teleskop: William Optics ZS 80 II ED, Primærfokus + 2X telekonverter

Huge sunspot June 14, 2012, 21:37 UT+2

Camera: Canon EOS450D, one single exposure, 1/250s, 400ISO

Telescope: William Optics ZS 80 II ED, Primary focus + 2X teleconverter

 

 

Sun on April 22 2012  

Picture taken at Sandsli outside Bergen, Norway.  April 22 2012
Camera: Point Grey Research Chameleon 1.3 Megapixel monochrome.
Lens: Mini Borg ED60 F5,8 refractor (350mm focal length).

Lunt solar wedge
Filter: Omega Optical TiO 705nm.

Processing:
Avistack2: Stacked the 80 best of 100 images
Final processing in Photoshop: Unsharp mask, Levels and Curves
Colour version (mouseover): Colours added in Photoshop.


The sun  

Picture taken at Sandsli outside Bergen, Norway.  June 11 2005
Camera: Canon EOS 20D.
Lens: Vixen R200SS 8" reflector plus 2x Sigma APO Teleconverter (1600mm total).
Filter: Baader AstroSolar safety film.
Exposure: 1/640s at f:8, 400ISO.

Processing:
Photoshop: Cropping and saving pictures as monochrome (the green channel), 16 bit TIFF

Registax 3: Stacked the 4 best of 18 images
Wavelets: 1; 3,1; 3,1; 2,4; 1; 1

Final processing in Photoshop:
Unsharp mask: 150 / 4 / 2
Levels 0,60
Contrast: +15

Colour version:

The Sun

Sharpness and contrast is better in monochrome (green channel is usually best)

© 2005: Odd Høydalsvik