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All the material on this website is copyrighted to J-P Metsavainio, if not otherwise stated. Any content on this website may not be reproduced without the author’s permission.

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Monday, September 30, 2013

Visions of space



This is one of my artworks based on an original astronomical photograph shot be me.
Image belongs to a large series of unpublished images called  Visions.


Vision

Buy a photographic print from HERE

This image is based on my original astronomical image of  IC 1340 in Eastern Veil Nebula.
Blog post about the IC 1340 can be seen HERE.





Sunday, September 29, 2013

Three experimental starless Oxygen emission images of the Veil nebula



I played with my older material, since the weather doesn't allow new projects.

This time I'm publishing three images of light emitted by an ionized Oxygen, O-III.
Images are closeups from the large supernova remnant in a constellation Cygnus, the Veil Nebula.
I wanted to see and show the actual structure of the nebula, due to that, stars are removed from each image.

Blue Lightning
Filaments in the Western Veil, Witch's Broom Nebula

A starless O-III channel. There is a one bright star left behind due to composition reasons.
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Blue Wing
A detail of the Veil Nebula, The Pickering's Triangle

A starless O-III channel
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An electric Nike of Samothrace
IC 1340 in Eastern veil Nebula

A starless O-III channel. Why the name "Nike of Samothrace"? Please have a look HERE.
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Original images with all the data


Witch's Broom Nebula

Image is in visual spectrum from  from the emission of ionized elements.
A light emitted by the ionized Oxygen can be seen as blue hues.
Buy a photographic print from HERE

The Pickering's Triangle

Image is in mapped colors, from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
A light emitted by the ionized Oxygen can be seen as blue hues.
Buy a photographic print from HERE

IC 1340

Image is in mapped colors, from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
A light emitted by the ionized Oxygen can be seen as blue hues.
Buy a photographic print from HERE

Orientation

The areas of interest are marked as a white rectangle. The circle, size of the full Moon, shows the apparent scale in lower right corner.
Buy a photographic print from HERE




Friday, September 27, 2013

Cygnus Trio


Since the weather dosen's support imaging, I extracted an other individual image out of the large Cygnus mosaic. This image shows the same area, than my first ever APOD image, back from the year 2008.



Cygnus Trio
Butterfly, Crescent and the Tulip Nebula

Click for a large image, Note. 1900 pixels and 2,5MB.
Image is in mapped colors, from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.

Image is shot with the Canon EF 200mm f1.8 camera optics, QHY9 a cooled astrocam and the Baader narrowband filter set, H-a, S-II and O-III. There are four individual panels, each panel is shot three times with different filter for the color image. Total exposure time is around 20h. 

An experimental starless image

I made this image to show some very faint nebula formations under the extremely dense star field.




Tuesday, September 24, 2013

Autumn season 2013 opened finally!



Last night I was able to open up my imaging season. After six months mandatory summer pause, it's great to be back!
As usually, this first light for the season is more like a test shot. I need to re collimate my optical path and fine tune my gears for optimal image quality.

A closeup of the Butterfly Nebula
First light for the Autumn season 2013

Image is in mapped colors, from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.

Image in visual spectrum



Orientation

Butterfly Nebula in constellation Cygnus. This wide field image is taken with Canon EF 200mm f1.8 camera optics, QHY9 astro camera and Baader narrowband fiters. Colors in new detail image are from this photo.
Area of interest is marhed with a white rectangle. More info about this image in HERE.

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 33 % weight
Levels, curves and color combine in PS CS3.

Optics, Meade LX200 12"
Camera, QHY9
Guiding, Starlight Express active optics unit, SXV-AO, and lodestar guider.
Image Scale, ~0,75 arcseconds/pixel
H-alpha 7x1200s, Binned 1x1 = 3h 20min.
O-III and S-II channels are from an older wide field image  HERE.

A single calibrated 20min. H-alpha light frame

Image is calibrated with darks and a bias corrected flats. No other processing but nonlinear stretching.





Monday, September 23, 2013

Sharpless objects, 223, 224 and 225 in Auriga, reprocessed



I'm waiting the weather to clear, to be able to open up my Autumn season. While waiting, I have practiced my processing skills, after a long Summer pause. 

Sh2-223, 224 and 225
In constellation Auriga, click for a large image.

Image is in mapped colors, from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.

Image in visual spectrum




A closeup of the supernova remnant Sh2-224



Info

Sh2-223: http://it.wikipedia.org/wiki/Sh2-223
Sh2-224: http://it.wikipedia.org/wiki/Sh2-224
Sh2-225: http://it.wikipedia.org/wiki/Sh2-225


About the new processing

I have used a new technique to dig out a very dim background nebulae. A starless version of 16h H-a exposure is stretched to an extreme and a data in level of background bias is revealed. 
To work, images, used with this technique, has to be perfectly calibrated with bisas corrected flats.

The power of this method can be seen easily, if the new image is compared to an older version HERE.

A data hiding near the background level is revealed in this starless image. 
This "tone map" is used to boost an extreme dim background nebulae in the final image.

Technical details

Camera, QHY9 
Optics, Canon EF 200mm f1.8 @ 1.8 
Guiding, QHY5 and PHD-guiding 
Imaging platform, LX200 GPS 12" 
Exposures

H-alpha, 7x1200s, 13x2400s and an additional 
15x1200s  imaged with QHY8 and Tokina AT 300mm f2.8 
O-III, 5x300s Binned 4x4 
S-II. 5x300s. Binned 4x4 . 

A single 1200s H-alpha frame
Calibrated, stretched and scaled down, no other processing

This single 20 min. exposure shows how dim this target really is.
There are very few images about this area of sky around.



Sunday, September 22, 2013

A supernova remnant Simeis 147 reprocessed



I'm waiting the weather to clear, to be able to open up my Autumn season. While waiting, I have practiced my processing skills, after a long Summer pause. 

Simeis 147 (Sh2-240)
In constellation Taurus

Image is in mapped colors, from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Total exposure time is now 26h. with fast, Canon EF 200mm f1.8, camera optics.

A closeup
Click for a 1:1 scale

A portion of the Simeis 147 shows massive amount of gas filaments.

Image in visual spectrum



An animated image, stars vs. starless
Click for a large image

I made this experimental animation to show better the actual nebula complex.
Many details are hiding under a very dense star field, like a small out burs at four a clock position.

The human brains has a tendency to form false forms and shapes from a random cloud of dots, in this case, stars. By removing all the stars, the real shapes are easier to see.

Info about the object

Simeis 147 (sharpless 240), is a very faint and very large supernova remnant in constellation Taurus at distance of ~3000 light years. It's constantly expanding at speed of 1000 km/second but due the size of it, we can't see any movement in it. This SN spans over 160 light years and the apparent scale in the sky is about three degrees (Moon has an apparent size of 30" = 0,5 degrees).  Explosion took place approximately 30.000 years ago  and left behind a  pulsar (Neutron star). The pulsar has recently identified.

How long it'll takes to this supernova remnant to expand 1% large when the diameter is 160 light years and it expands at speed of 1000km/second.
Answer is ~480 years.
 (1% of diameter 160/100= 16, as kilometers ~151.372.800.000.00, = Y, km,
1000km/second is ~315.360.000.00, = Z, kilometers/year.
So, X x Z = Y and  X=Z/Y,    X = 480 with given values)

This image get selected as a Space Picture of the Week by the National Geographic magazine. You can see the story HERE



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 33 % weight
Levels, curves and color combine in PS CS3.

Optics, Canon EF 200mm camera lens at f1.8
Camera, QHY9
Guiding, Meade LX200 GPS 12" and a Lodestar guider
Image Scale, ~5,5 arcseconds/pixel
H-alpha 34x900s, Binned 1x1 = 8,5h
H-alpha 24x1800s, Binned 1x1 = 12h
O-III 60 x 300s, Binned 3x3 = 5h
S-II 6 x 600, Binned 3x3 = 1h

Total exposure time for Hydrogen alpha alone is ~20,5h
Total exposure time is 26,5h



Tuesday, September 17, 2013

A collection of images from a large mosaic of Cygnus


I haven't been able to open up this season yet, since some of my equipment are not yet back from the factory service. (Should be here any day now!) To keep up my processing skills, I have reprocessed my older material.

All images are reprocessed and fine tuned. Images are shot wit a Canon EF 200mm f1.8 monster lens.
This lens is very sharp from edge to edge at full open. 
Some parts of the mosaic are boosted with longer focal length instruments, Tokina AT-X 300mm camera lens and the Meade LX200 12" SCT-telescope. QHY9, a cooled astronomical camera, is used with all instruments. All photos are in narrowband colors, from an emission of ionized elements, Hydrogen, Oxygen and Sulfur. Baader narrowband filter set is used for the emission line imaging with all the instruments.

Cygnus mosaic, reprocessed
Reprocessed, NOTE. a large image 2300 pixels wide and 4.3MB

Image is in mapped colors from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen. Native size of  this image is over 15.000 x 10.000 pixels.

A collection of sub-images from the mosaic above
Please, pay attention to a resolution of images bellow. I have used a new processing technique of mine to keep images sharp during the processing routine.
No artificial  sharpening methods are used!

CIRRUS OF CYGNUS

NOTE. a large image, 3000 pixels wide and 4MB.


CRESCENT NEBULA, NGC 6888



THE TULIP NEBULA, SHARPLESS 101



NORTH AMERICA AND THE PELICAN NEBULAE



NORTH AMERICA AND THE PELICAN NEBULAE



THE BUTTERFLY NEBULA



A Chinese Dragon
The overall shape of the nebula complex looks like a dragon!



A large photographic print at my home

A framed copy of the Cygnus Nebulae, my wife, Anna, as a scale.

Links

Original blog post of Cygnus mosaic: 

A reprocessed mosaic in visual colors:

Tools used for this image:

My portfolio:


Monday, September 16, 2013

An experimental 3D-study of the Heart nebula, IC 1805


I haven't been able to open up this season yet, since some of my equipment are not yet back from the factory service.

This is an experimental test with a 3D-conversion of my astronomical images. Only real elements from my original image are used, there is nothing added but the volumetric information!

NOTE. This is a personal vision about shapes and volumes, based on some scientific data and an artistic impression.

Heart Nebula, IC 1805, as an experimental 3D-model
NOTE. A largish image, about 7.5MB, let it load for few seconds.



My original image of the Nebula is used for the animation
Click for the large image

Image in natural color is taken with the SW 80ED telescope, QHY8 astronomical camera and the Baader UHC-s filter. Exposure time ~5h.

More 3D-experiments can be seen here: 
http://www.astroanarchy.blogspot.fi/search/label/animations

3D-experiments in different stereo formats can be seen here:
http://astroanarchy.zenfolio.com/f359296072




Saturday, September 14, 2013

Cygnus mosaic in natural colors, reprocessed


I haven't been able to open up this season yet, since some of my equipment are not yet  back from the factory service. To keep up my processing skills, I reprocessed the great 18-panels mosaic image of Cygnus. Mapped color version was very much OK but I wasn't happy with natural color version.


The 18-panels mosaic of nebulae in constellation Cygnus
Click for a large image. NOTE. A large image, 2300x1500 pixels and ~5MB

Image is in visual spectrum, red light is emitted by an ionized Hydrogen (H-alpha). Blueish hues are from ionized Oxygen (O-III). NOTE. An apparent size of the full Moon is marked at lower right corner as a scale

This 18-panels mosaic is hot with Canon EF 200mm F1.8 camera lens, QHY9 cooled astronomical camera and the Baader narrowband filter set. Total exp. time is around 120h. More information with the original blog post  HERE. Original image is 15.000 pixels wide and over 300MB.

A detail from the image above to show the image resolution
Click for a large image

Not a bad resolution for a 200mm camera lens!




Friday, September 13, 2013

An experimental 3D-study of North America and the Pelican Nebulae


This is an experimental test with a 3D-conversion of my astronomical images. Only real elements from my original image are used, there is nothing added but the volumetric information!

NOTE. This is a personal vision about shapes and volumes, based on some scientific data and an artistic impression.

North America and the Pelican Nebulae as an experimental 3D-model
NOTE. A largish image, about 7MB, let it load for few seconds.



My original image of the Nebula is used for the animation
Click for the large image

Image is in mapped colors

Original blog post about NGC 1499 with technical details
http://www.astroanarchy.blogspot.fi/2011/11/ngc-7000-north-america-pelican-nebulae.html

More 3D-experiments can be seen here: 
http://www.astroanarchy.blogspot.fi/search/label/animations






Monday, September 9, 2013

Sh2-112, processed with an additional data



I'm waiting to start imaging a new material but there are few items in factory service and I'll need to wait them to come back. Mean while I reprocessed my image of Sharpless object 112 in constellation Cygnus. 

Originally I had too little exposures to reveal the background nebulous properly. I noticed, that I actually have a very deep exposures for this object but taken with very different image scale. I have shot this area with a Canon EF 200mm f1.8 optics and the background nebulous stands out very nicely there. 

I have developed a new method to combine data from very different sources. It's based on signal to noise analysis, a very weak signal doesn't usually has too much details in it. The weak signal from a low resolution source can be used with a high resolution signal and best of both image types will be used in final image.

Original versions of images bellow can be seen in this blog post:
http://astroanarchy.blogspot.fi/2012/12/sharpless-112-sh2-112_5.html

Sharpless 112
An emission nebula in constellation Cygnus

Image in mapped colors from the light emitted by ionized elements. 


Red=Sulfur, Green=Hydrogen and Blue=Oxygen.


The additional data is taken from this wide field image of the same object


This is a small part of a very large mosaic image of the constellation Cygnus, the mosaic can be seen HERE.
Sh2-112 is located at lower center of the image and the weak background nebulae stand out clearly. Image is shot with a very fast opticla configuration, a Canon EF 200mm f1.8 lens at full open, a cooled astronomical camera, the QHY9 and the Baader narrowband filter set. Total exposure time for this image is around 4h.

Sh2-112 in visual spectrum

Image is in visual colors, combined from the narrowband data.


Technical details:

Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Levels, curves and color combine in PS CS3.

Optics, Meade LX200 GPS 12" @ f5
Camera, QHY9
Guiding, SXV-AO, an active optics unit, and Lodestar guide camera 8Hz
Image Scale, ~0,8 arc-seconds/pixel
21 x 1200s exposures for the H-alpha, emission of ionized Hydrogen = 7h
3 x 1200s exposures for the O-III, emission of ionized Oxygen = 1h
3 x 1200s exposures for the S-II, emission of ionized Sulfur = 1h

Additional exposures for the background nebulae are shot with a very fast opticla configuration, a Canon EF 200mm f1.8 lens at full open, a cooled astronomical camera, the QHY9 and the Baader narrowband filter set. Total exposure time for this extra data is around 4h.