Wednesday, December 24, 2014
Hyvää Joulua, Merry Christmas, Happy Holidays, Joyeux Noël
Merry Christmas, Happy Holidays, God Jul,
Hyvää Joulua, Joyeux Noël
Info about the image above in HERE
Hyvää Joulua, Joyeux Noël
Info about the image above in HERE
Saturday, November 29, 2014
Astro anarchy gets published, an art gallery just opened!
For this holiday season I got invited to participate to a temporary art exhibition "Joulun Tähdet" (Stars of Christmas" in my home town Oulu.
We now have a small gallery opened at the very center of the city for about one month.
Beside my astrophotos, there are oil paintings from Matti mikkola and some older nineteenth huderts century paintings from the collections of Kuru Koru. There are also some special collectables and antique for sale from kuru Koru's collections too.
Our address in Oulu, Pakkahuoneenkatu 10, "Vanhan Apteekin talo", at street level.
We are open daily from 12.00 to 18.00 until christmas.
You Are very welcome!
Some pictures from the gallery
Tuesday, November 25, 2014
Sharpless 132, Sh2-132, in visual spectrum
I published the original photo of Sharpless 132 at November 11 but only in mapped colors. In this version, the narrowband channels are combined so, that the resulting image is as close as possible to a visual spectrum of human eye. Red is the dominating color since the ionized hydrogen, H-alpha, is the strongest emission line and it's emitting deep red light. Blue hues are coming from the emission of an ionized oxygen, O-III.
A furious cosmic horse gets blinded by a divine blue light
Sharpless 132 (Sh2-132) in Cepheus
Image is in visual colors, if human eye could be able to see colors in extremely low light, most emission nebulae appears in deep red color due to dominance of an ionized hydrogen, H-alpha. Blue color is coming from the emission of an ionized oxygen, O-III.
An experimental starless version
A closeup composition
INFO
Sharpless 132 is a very faint emission nebula, it locates at the border of Cepheus and Lacerta. Distance is about 10.000 lightyears. My photo covers about one square degree of the sky (63x63"). The blue color in the image is from the emission of an ionized Oxygen (O-III). "The divine blue light" at horses face seems to be an Oxygen jet of some kind, or it's just a tens of light years long oddly shaped area of glowing gas. The shape can be seen in H-alpha channel too. (Ionized Hydrogen)
Technical details
Processing work flow
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 33 iterations, added at 50% weight
Color combine in PS CS3
Levels and curves in PS CS3.
Imaging optics
Celestron Edge HD 1100 @ f7 with 0,7 focal reducer for Edge HD 1100 telescope
Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x2
Astrodon filter, 5nm H-alpha
Astrodon filter, 3nm O-III
Exposure times
H-alpha, 9 x 1200s = 3h
O-III, 3 x 1200s = 1h
S-II, 3x1200s = 1h
A single un cropped, calibrated and stretched 20 min. H-alpha frame
Tuesday, November 18, 2014
Soul Nebula, IC 1848, as a two frame mosaic
This image is originally shot this Autumn between 27 and 29.10. I haven't publish it before, since I have had so much material to share. The new imaging system gives me a nice field of view, with a high resolution.
63x63 arc minutes at a scale of 0,95 arc seconds/pixel. That's over a square degree of sky.
IC 1848, the Soul Nebula
Ra 02h 51m 36.24s Dec +60° 26′ 53.9" Click for a large image!
Mapped colors from an emission of the ionized elements, Red=Sulfur, Green=Hydrogen and the Blue =Oxygen. The photo is stitched together from two separate shots.
An experimental starless view
Details of the actual nebula stands out better in this starless view.
Info
Soul Nebula, (Sh2-199, LBN 667) is an emission nebula in constellation Cassiopeia. IC 1848 is a cluster inside Soul Nebula. Distance is about 7.500 light years. This complex is a Eastern neighbor of IC 1805, the "Heart Nebula" and they are often mentioned together as Heart and Soul.
A wider field photo
In this wide field image of mine, the Soul Nebula is shown with its neighbor, the Heart nebula. Image is shot with the Canon EF 200mm f1.8 lens, Baader narrowband filters and the QHY9 cooled astronomical camera. My older photos of the Soul nebula can be seen HERE
Nebula in visual spectrum
Red is a dominant color since the strongest emission line of hydrogen, H-alpha, emits red light. Bluish hues are from ionized oxygen, O-III
Hydrogen alpha image
Nebula in H-alpha light alone.
Technical details
Processing work flow
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 33 iterations, added at 50% weight
Color combine in PS CS3
Levels and curves in PS CS3.
Imaging optics
Celestron Edge HD 1100 @ f7 with 0,7 focal reducer for Edge HD 1100 telescope
Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x2
Astrodon filter, 5 nm H-alpha
Exposure times
H-alpha, 24 x 1200s = 8h (4h/panel)
O-III, 6x1200 (1h/panel), binned 4x4
S-II, 6x1200 (1h/panel), binned 4x4
Total 12h
O-III, 6x1200 (1h/panel), binned 4x4
S-II, 6x1200 (1h/panel), binned 4x4
Total 12h
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