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Friday, December 9, 2011

Cygnus mosaic, 18-panels and 22 x 14 degrees of sky




Finally finalized, with a lots of work... uh


NOTE! A large image, ~1200x2000 pixels and ~3Mb
Image is in mapped colors, from the emission of ionized elements, 
R=Sulfur, G=Hydrogen and B=Oxygen.
The "noise" in background is not a noise but countless number of stars!

Even larger, 3500 x 2200 pixels and ~10Mb, image can be seen from HERE.
(Original resolution is about 15.000 x 10.000 pixels.)

Some technical information about the image:
  • Original size for the 18 panels mosaic ~15.000 x10.000 pixels
  • Resolution 5,5 arch seconds / pixel
  • Image center, RA 20h 27s, Dec 43d 30m 45s
  • Area of this image is about 22 x14 degrees of sky.
  • Full Moon has an angular diameter of 0,5 degrees, it fits to the area of this image about 1230 times!

A cropped images, to show the resolution
(Image size is reduced)


A detail from the North America and Pelican Nebulae area.
More closeups in this blog post:
http://astroanarchy.blogspot.com/2011/11/cygnus-project-grande-finale.html


A closeup from the "Cirrus" area of the large panorama.



Image in visual spectrum

Image is in Natural color palette from the emission of ionized elements, 
R=Hydrogen + Sulfur, G=Oxygen and B=Oxygen + Hydrogen. this palette is very close to a visual spectrum. NOTE! A large image, ~1920x1200 pixels and ~3Mb

A Gray scale image of Hydrogen alpha emission
can be seen HERE  (Note, about 7,3 meg)


Orientation in the sky
overlay with a star map

Constellation Cygnus



This is a third expansion for this mosaic

I started the Cygnus mosaic project by shooting a three panel mosaic from the "Cirrus area"


Three panel mosaic of Cirrus of Cygnus.


The second phase was an eight panel mosaic. The blog post can be seen from here:


An eight panel mosaic. 



All mosaics, made so far from the Cygnus constellation.



An experimental starless image to show the actual nebula





(NEW) An experimental 3D-study about this area
Note.  This is a personal vision about forms and shapes, based on some known facts and an artistic impression.

3D-NOTE!
You'll need Red/Cyan Eyeglasses to be able to see images as 3D.If you have a Red and Blue filters, you can use them! Red goes to Left eye.

Click an image for a 1900 x 1200 pixels version!

Other 3D-studies and  viewing methods in my portfolio:



Technical details for the 18 panel mosaic


Panels shot for this mosaic.

I have used a very fast camera optics, Canon EF 200mm f1.8, full open to collect all the data in this mosaic. Due that, total exposure time is relatively short, ~22h, there are some very dim formations clearly visible.

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

Optics, Canon EF 200mm camera lens at f1.8
Camera, QHY9
Image Scale, ~5,5 arcseconds/pixel
Guiding, Meade LX200 GPS 12" and a Lodestar guider
Filters used, Baader 7nm H-alpha, S-II & O-III

Here are all technical data for the H-alpha emission line:

I had ready made eight panel mosaic with all three emission line, H-a, S-II and O-III  I managed to collect very little new color data but I had some earlier images from this area. I used all of them to finalize this color composition. Gaps between the color data are filled with an averaged colors from surrounding color data.

Here are links to older images used for the missing color data

North America and the Pelican Nebulae: 

Lower parts of previous image:

Sharpless 119, Sh2-119:

The Crescent Nebula, a wide field image:



www.tips-fb.com Posted by J-P Metsavainio at 5:22 PM 3 comments
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Thursday, December 8, 2011

Simeis 147, a supernova remnant as a stereo pair 3D






Parallel vision 3D



Cross vision 3D



Closeups as 3D stereo


Parallel vision 3D





Cross vision 3D


Other 3D-formats:

Original 2D:







NOTE! This is a personal vision about forms and shapes, based on some known facts and an artistic impression.
www.tips-fb.com Posted by J-P Metsavainio at 12:42 PM 1 comments
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Simeis 147, a supernova remnant as an anaglyph Red/Cyan 3D





3D-NOTE!
You'll need Red/Cyan Eyeglasses to be able to see images as 3D.If you have a Red and Blue filters, you can use them! Red goes to Left eye.



A closeup from above image


Other 3D-formats:

Original 2D:






NOTE! This is a personal vision about forms and shapes, based on some known facts and an artistic impression.
www.tips-fb.com Posted by J-P Metsavainio at 12:35 PM 0 comments
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Thursday, December 1, 2011

Simeis 147, a supernova remnant





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. Note, the "noise" in background is not a noise but countless stars!

I shot H-alpha filtered lights for this image at many nights, after I shot lights for my Cygnus mosaic project.
After a midnight, Cygnus and its targets are too low in the horizon so I used rest of the night for this supernova remnant. Total exposure time for H-alpha, ~13h.

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.

EDIT
I just did a small calculation, how long it 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 is a difficult target to image and image above is my second try to capture it. An older version can be seen here. This older image was my second APOD from NASA.

Closeups









Image in visual spectrum

Image in Natural color palette from the emission of ionized elements, 
R=Hydrogen + Sulfur, G=Oxygen and B=Oxygen + Hydrogen.
This palette is very close to a visual spectrum.


An animated image, with and without stars


This is an experimental image, the structure of filaments stands out nicely without stars.




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
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 arcseconds/pixel
H-alpha 34x900s, Binned 1x1
H-alpha 14x1800s, Binned 1x1
Total exposure time for Hydrogen alpha is ~13h

O-III & S-II channels are from an older image, it can be seen here


www.tips-fb.com Posted by J-P Metsavainio at 4:50 PM 1 comments
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