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Wednesday, January 28, 2015

Soul Nebula, IC 1848, as an experimental 3D stereo image pair


The weather doesn't support the imaging of the new material, so I made a new experimental 3D-study out of my photo of the Soul Nebula, IC 1848.

Images are for two different viewing methods, the first set of images is for the Parallel Vision method and the second set for the Cross Vision method. Viewing instructions can be seen HERE.

NOTE! This is a personal vision about forms and shapes, based on some scientific facts, deduction and an artistic impression.

3D Soul Nebula as a freeview stereo pair

For a parallel viewing method

Nebula for the Parallel Vision method. Click for a large image.
Original 2D-image can be seen in HERE

For a cross vision viewing method

Nebula for the Cross Vision method. Click for a large image.
Original 2D-image can be seen in HERE


More 3D-experiments in my portfolio





Tuesday, January 27, 2015

Jellyfish Nebula, IC 443, a supernova remnant in Gemini



This winter season has been worst I have seen in fifteen years. We have now had almost constant cloud cover for about three months. There was a partially clear sky for couple of nights and I managed to use it, since my observatory is located just next to my home. The night between  18. and 19. of January was kind of clear but the seeing and transparency was very poor. I was about to toss away all of the frames for IC 443 but since I haven't anything else to process, I kept them. Here are the results, I did the best I could with a low quality material. This object will need much more exposures in future.

IC 443, the Jellyfish Nebula SNR

IC 443 in H-alpha light alone, four hours of integration time.


INFO

IC 443, Jellyfish Nebula, Sharpless 248 (Sh2-248), is a galactic supernova remnant in the constellation Gemini. It locates near the star Eta Geminorum (A bright star at middle right) at distance of about 5000 light years. This supernova event very likely created a neutron star (CXOU J061705.3+222127), a collapsed remnant of the stellar core. Nebula spans about 50-70 light years. This photo has an angular size of about one arc minute. (Full Moon has an apparent size of ~30 arc minutes.)


An older wide field photo of the same object

Image is in mapped colors from the emission of ionized elements, Hydrogen, Sulfur and Oxygen.
Original blog post of this image with technical details can be seen HERE


A color version of IC 443
Colors from Sulfur and Oxygen are borrowed from the photo above

Image is in mapped colors from the emission of ionized elements, Hydrogen,
Sulfur and Oxygen. Oxygen and Sulfur are from an older wide field photo.

An experimental starless view

In this experimental starless image, the actual remnant stands out nicely. The deep red
color is from the Hydrogen alpha emission, the strongest emission line of  the 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

Exposure times
H-alpha, 12 x 1200s = 4h





Monday, January 26, 2015

New exhibition in Oulu, Finland



Astronomical nature photographing, an exhibition
Monday, Wednesday and Thursday from 12-18.00 every week until the end of the February.
Kajaaninkatu 13, Oulu, welcome!

An exhibition poster, my photo of NGC 281 at background

A MAP



Some photos from the exhibition, many new photos as a high quality aluminium prints

An aluminium print of constellation Cygnus at right, 90 x 144cm


A photographic print of Veil nebula at light of ionized Oxygen only, 30x40cm


NGC 1499, the California Nebula, an aluminium print, 55x70cm


At to, an aluminium print of the Tulip nebula, 58x70cm. At bottom, Sharpless 132, as an aluminium print, 50x70cm.

The Pelican Nebula at bottom left, an aluminum print at size of 62x110cm and many others.


A collection of real museum quality photographic prints at many sizes




Sunday, January 11, 2015

Veil Nebula in light of ionized oxygen only



This must be the worst winter season ever! Last time we have had clear skies, up here 65N, was at end of the October, almost two and half months ago! Now it's cloudy, -13celsius (~8 fahrenheit) with a storming wind to a top of that. Next ten days will be no better by weather forecast. Few words comes to in my mind but I say only one, frustrated.



Veil Nebula in O-III light only
Click for the large image

This photo of the Veil Nebula supernova remnant in Cygnus shows only an emission from the ionized oxygen (O-III). All the stars are suppressed to show the actual shapes of the ionization front better.
The ionized oxygen, O-III, glows at wavelength of 500,7 nanometer. To a human eye it shows as a turquoise color. 

Info

Veil Nebula is a cloud of ionized gas and dust, leftovers from an exploded star. The star exploded some 5000-8000 years ago at distance of about 1470 light years. This, relatively faint target, is difficult to image due the large angular diameter, about three degrees, and a dense star field.


Some closeup photos in emission of ionized oxygen only


IC 1340 in ionized Oxygen light, O-III

More info about this photo of mine can be see HERE



Pickering's Triangle in ionized Oxygen light, O-III

More info about this photo of mine can be see HERE



Eastern Veil in ionized Oxygen light, O-III

More info about this photo of mine can be see HERE



Witch Broom Nebula in ionized Oxygen light, O-III

More info about this photo of mine can be see HERE



The Veil Nebula in colors

This photo of the Veil nebula shows it in full colors. Colors are combined from the emission of ionized elements, hydrogen, sulfur and oxygen.(H-alpha, S-II and O-III) More info about this photo of mine can be see HERE