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Sunday, February 2, 2014
A poster format collection from the Cepheus project
In this collection of my images, the objects shown in a large mosaic of the constellation Cepheus, are collected together. There are indicator lines to show the actual location of object in a large context. As can be seen, I have shot many objects in various focal lengths.
The Cepheus project was my last published image before the major break down of my imaging equipment.
The Cepheus project was my last published image before the major break down of my imaging equipment.
The Cepheus collection
Be sure to click the image to see it in full scale! (2400 x 2000 pixels and 4,5 MB)
An Original blog post of The Cepheus project can be seen HERE.
Small images clockwise, starting from the top left
- Cave Nebula, a closeup: http://astroanarchy.blogspot.fi/2012/12/the-cave-nebula_9.html
- Cave Nebula, a wide field shot: http://astroanarchy.blogspot.fi/2011/01/sh2-155-cave-nebula-reprocessed.html
- Sharpless 140: http://astroanarchy.blogspot.fi/2012/02/dim-and-large-nebula-in-cepheus.html
- Sharpless 129: http://astroanarchy.blogspot.fi/2013/12/a-start-of-new-project-cepheus-mosaic.html
- Elephant's Trunk Nebula: http://astroanarchy.blogspot.fi/2012/12/elephants-trunk-nebula-reprocessed.html
- IC 1396: http://astroanarchy.blogspot.fi/2011/10/ic-1396-home-of-elephants-trunk-nebula.html
- Sharpless 132, a wide field shot: http://astroanarchy.blogspot.fi/2011/02/sh2-132-project-finalized.html
- Sharpless 132, a closeup: http://astroanarchy.blogspot.fi/2013/10/the-second-image-of-autumn-season-2013.html
- The Wizard Nebula: http://astroanarchy.blogspot.fi/2011/07/sh2-142-wizard-nebula-reprocessed.html
- Sharpless 157: http://astroanarchy.blogspot.fi/2011/03/sh2-157-reprocessed.html
- Bubble Nebula: http://astroanarchy.blogspot.fi/2011/03/bubble-nebula-reprocessed.html
Tuesday, January 28, 2014
A grande finale of the Cepheus project, mosaic of ten panels with colors
I have planned this Cepheus project for a long time. Finally I have been able to finalize it. I have done some large mosaic images of nebula rich areas in our Milky way. The ultra fast camera optics, Canon EF 200mm f1.8, it's a perfect tool for the job. It has a large, flat and sharp, image field and full open at f1.8, it collects photons very fast. The final image covers an area of about 18x10 degrees. (Full Moon has an apparent size about 0,5 degrees. 720 full Moons are needed to cover this area in the sky.)
To have a color image, each of the panels have been shot three times. This narrowband image is shot with QHY9 (a cooled astronomical camera), Canon EF 200mm f1.8 camera optics full open, Baader Planetarium Narrowband filter set for an emission of ionized elements, Hydrogen, Oxygen and Sulfur. (H-alpha, O-III and S-III) The dimensions of the final mosaic image are 12000 x 6500 pixels.
Emission Nebulae in constellation Cepheus
Mosaic image of ten individual panels, total exposures 92h.
Click for a very large image, 3000 pixels wide and 7MB.
Buy a real photographic print from HERE
About 1:1 detail from the image above
Click for a full size photo
Lots of stars out there.
Cepheus Nebulae in visual spectrum
Composed from the narrowband channels
Image is in Natural color palette from the emission of ionized elements,
R=Hydrogen + Sulfur, G=Oxygen and B=Oxygen + Hydrogen.
Buy a real photographic print from HERE
B&W image with an emission of Hydrogen alpha only
Image of light, emitted by an ionized Hydrogen.
Buy a real photographic print from HERE
A labeled image and orientation
Some main objects are labeled here
An orientation in constellation Cepheus. The mosaic image covers an area of ~18x10 dgrees.
Technical details
I have used lots of an older material for this image. I have shot this area for years, with a different instruments, with different focal lengths and apertures. The total exposure time for the final mosaic image is calculated by adding the exposures for the actual mosaic to the exposures for sub-images used.
List of the sub-images used for a large, 10 panels, mosaic of Cepheus
The first part of the mosaic, four panels: http://astroanarchy.blogspot.fi/2013/12/a-start-of-new-project-cepheus-mosaic.html
Sharpless 132, a wide field shot: http://astroanarchy.blogspot.fi/2011/02/sh2-132-project-finalized.html
Sharpless 132, a closeup: http://astroanarchy.blogspot.fi/2013/10/the-second-image-of-autumn-season-2013.html
Cave Nebula, a wide field shot: http://astroanarchy.blogspot.fi/2011/01/sh2-155-cave-nebula-reprocessed.html
Cave Nebula, a closeup: http://astroanarchy.blogspot.fi/2012/12/the-cave-nebula_9.html
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
An extra background normalization in CCDStack for a mosaic match.
Color combine for each panel in PS CS3
Panel composition in PS CS3
Levels, curves and the final color matching in PS CS3.
Imaging optics used for the mosaic image
Meade LX200 GPS 12" reduced to f5
Tokina AT-X 300mm f2.8
Canon EF 200mm f1.8
Cameras and filters
Imaging camera QHY 9, with a QHY filter wheel
Guider camera, Lodetsar
Active optics unit SXV-AO with Meade LX200 12" telescope
Baader Filter set, 7nm H-aplha, 8nm S-II and 8.5nm O-III
Total exposures used for a mosaic image
H-alpha 160 x 1200s Bin 1x1
O-III 66 x 1200s Bin 1x1
S-II 50 x 1200s Bin 1x1
Total exposures 276 x 1200s = 92h
Thursday, May 16, 2013
An experimental starless version of the Wizard nebula,
I like to make starless versions of my astronomical images now and then. They'll show the actual nebula better and have a kind of mystique feel.
Human brains has a tendency to form some quasi logical shapes out of cloud of random dots, like stars in this case. Without stars, the shapes in a gas cloud stands out much better.
A starless Sharpless 142 (Sh2-142), the Wizard Nebula
In constellation Cepheus
Image with a suppressed stars, click for a large image.
Original image with a technical details can be seen in THIS blog post.
Image with the stars
Info
NGC 7380 is a catalog number of the open star cluster inside Wizard nebula, SH2-142.
Nebula locates in constellation Cepheus, about 7000 light years from my home.
Technical details
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 30 iterations at 50% weight.
Levels, curves and color combine in PS CS3.
Telescope, Meade LX200 GPS 12" @ f5
Camera, QHY9 Guiding, SXV-AO @ 6,5Hz
Image Scale, 0,75 arcseconds/pixel
Exposures H-alpha 15x1200s, binned 1x1
S-II 1x1200s, binned 4x4
O-III 1x1200s, binned 4x4
Beside data here, a color information from an older wide field image is used.
Image can be seen here: http://astroanarchy.blogspot.fi/2011/02/sh2-142-wizard-nebula-wide-field.html
Monday, April 22, 2013
I need more space
I made a small poster, just for a fun.
Couple of versions
Wednesday, December 12, 2012
The Wizard Nebula reprocessed
I reprocessed this image since weather doesn't support imaging up here and my processing work flow is somehow different now. My new work flow produces much softer images, I think.
NGC 7380, Sh2-1142, the "Wizard Nebula", in Cepheus
Ra 22h 47m 0s Dec +58° 06′ 00″
R=Sulfur, G=Hydrogen and B=Oxygen.
A closeup
Info
NGC 7380 is a catalog number of the open star cluster inside Wizard nebula, SH2-142.
Nebula locates in constellation Cepheus, about 7000 light years from my home.
Natural color composition from the emission of ionized elements, R=80%Hydrogen+20%Sulfur, G=100%Oxygen and B=85%Oxygen+15%Hydrogen to compensate otherwise missing H-beta emission. This composition is very close to a visual spectrum.
An experimental starless version
This image shows just the gas formation, without stars interfering.
Previous version
same raw data is used here
Technical details:
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 30 iterations.
Levels, curves and color combine in PS CS3.
Telescope, Meade LX200 GPS 12" @ f5
Camera, QHY9 Guiding, SXV-AO @ 6,5Hz
Image Scale, 0,75 arcseconds/pixel
Exposures H-alpha 15x1200s, binned 1x1
S-II 1x1200s, binned 4x4
O-III 1x1200s, binned 4x4
Beside data here, a color information from an older wide field image is used.
Image can be seen here: http://astroanarchy.blogspot.fi/2011/02/sh2-142-wizard-nebula-wide-field.html
A study about an apparent scale in a sky
Thursday, October 13, 2011
Astro anarchy gets published
My image of the "Wizard Nebula", NGC 7380, get published in the Discovery Magazine.
In October 2011 issue, there is an article about multiverse, and they did use my image with it. Images can be found from a table of content , page 2, and in the story, page 31.
This is the used image. Original blog post, with a technical details, can be found HERE.
Wednesday, September 28, 2011
A set of wide fields vs closeups
Since the weather doesn't support shooting any new material, I have done more image pairs from same target.
I have shot many targets with least two different focal lengths, usually a 200-300mm camera lens and my old Meade LX200 GPS 12" telescope. I have done earlier some scale studies as a zoom in series, with Moon circle as a scale.
Now I have done just simple image pairs, showing both, a wide field and a closeup from the same objects.
Sh2-142, the "Wizard Nebula"
Ra 22h 47m 0s Dec +58° 06′ 00″, in constellation Cepheus
Image is in HST-palette, (HST=Hubble Space Telescope)
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Links to the original images, used in series, from top to bottom, 300mm vs ~2000mm
NGC 7000, the "North America Nebula"
In constellation Cygnus
Image is in HST-palette, (HST=Hubble Space Telescope)
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Links to the original images, used in series, from top to bottom, 300mm vs ~2000mm
IC443, the "Jellyfish Nebula"
In constellation Gemini
Image is in HST-palette, (HST=Hubble Space Telescope)
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Links to the original images, used in series, from top to bottom, 300mm vs ~2000mm
2. http://astroanarchy.blogspot.com/2011/01/ic-443-reprocessed-closeup-and-wide.html
Monday, September 5, 2011
Bubble Nebula reprocessed, again
Since my processing technique gets better and weather doesn't give any support, I have reprocessed some older images. There is now star colors added and other processing is tweaked too.
Sharpless 162, NGC 7635, the "Bubble Nebula"
Ra 23h 20m 48s Dec +61° 12′ 06″
A closeup
A closer closeup of the bubble feature
Not a bad resolution for an olde Meade LX200 GPS 12" telescope...
I made this animation originally to be sure, that I don't have any artifacts from my experimental processing workflow.
I made this animation originally to be sure, that I don't have any artifacts from my experimental processing workflow.
This is one of the most interesting looking structures in a sky.
NGC 7635 aka "Bubble Nebula, Sh2-162 or Caldwell11, is a Hydrogen emission nebula in constellation Cassiopeia. It locates near the open cluster M 52 at distance of about 11.000 light years from the Earth.
The bubble structure is created by a strong stellar wind, a radiation pressure, from massive hot magnitude 8,7 central star, SAO 20575, it can be seen in an image inside of the bubble, off centered at Right.
NGC 7635 aka "Bubble Nebula, Sh2-162 or Caldwell11, is a Hydrogen emission nebula in constellation Cassiopeia. It locates near the open cluster M 52 at distance of about 11.000 light years from the Earth.
The bubble structure is created by a strong stellar wind, a radiation pressure, from massive hot magnitude 8,7 central star, SAO 20575, it can be seen in an image inside of the bubble, off centered at Right.
Bubble is an expanding shock front inside a giant molecular cloud and it has a diameter more than Six light years. The spherical formation is expanding at speed of 6500.000 km/h, due the huge scale and distance we can't see the movement easily. In a century, the bubble in this image will be only about one pixel wider, than now! ( ~1 arc second)
Strong UV-radiation from a central star ionized elements in a gas and makes them glow at typical wavelength to each element. (Hydrogen glows Red light as Sulfur, Oxygen emits Green/Blue light at visible wavelengths)
If you are interested about color schemes used in my images, I wrote a small study about them, please, have a look here: http://astroanarchy.blogspot.com/2009/11/colors-in-astro-images.html
Natural color composition from the emission of ionized elements, R=80%Hydrogen+20%Sulfur, G=100%Oxygen and B=85%Oxygen+15%Hydrogen to compensate otherwise missing H-beta emission. Star colors are mixed from the NB channels, Red=H-a, G=O-III and B= 85%O-III + 15%H-a.This composition is very close to a visual spectrum.
A closeup
Previous version of the Bubble Nebula can be seen here:
Please, let me know, if this one looks better!
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 30 iterations.
Levels, curves and color combine in PS CS3.
-
Imaged in three nights between 27.09 - 04-09 2009, seeing varys between 4-2,5 FWHM
Telescope, Meade LX200 GPS 12" @ f4.65 Camera, QHY9 Guiding, SXV-AO @ 11Hz
Exposures:
H-alpha 21x1200s Binned 1x1 = 7h
S-II 10x600s Binned 3x3
O-III 5x600s Binned 3x3
A study of the apparent scale in a sky
NOTE. The size of the full Moon (0,5 degrees) is marked as a scale.
3D-study of the Bubble Nebula:
http://astroanarchy.blogspot.com/2009/10/bubble-nbula-as-stereogram.html
3D-study of the Bubble Nebula:
http://astroanarchy.blogspot.com/2009/10/bubble-nbula-as-stereogram.html
Wide field images of the Bubble Nebula area
Sharpless 157, Sh2-157, in a middle, Bubble Nebula can be seen at about ten a clock position.
A panoramic, two panel mosaic, from the Bubble to the Wizard Nebula at Right.
Saturday, August 13, 2011
Bubble Nebula, apparent scale in the sky, horizontal editions
I have shot many targets with several focal lengths.
Due that, I will publish some of my material as an image sets, with different field of view and detail levels.
The fractal nature of our universe stands out nicely by this way and it will make the orientation more easy.
Many times, it's difficult to understand the image scale of astronomical images.
Due that, I will add a Moon circle in some of the images to show the angular scale in a sky.
The full Moon has an angular size of ~30 arc minutes, that's equal to ~0,5 degrees.
Sharpless 162, NGC 7635, the "Bubble Nebula"
Ra 23h 20m 48s Dec +61° 12′ 06″
Natural color composition from the emission of ionized elements, R=80%Hydrogen+20%Sulfur, G=100%Oxygen and B=85%Oxygen+15%Hydrogen to compensate otherwise missing H-beta emission. This composition is very close to a visual spectrum.
NOTE. The size of the full Moon (0,5 degrees) is marked as a scale.
NGC 7635 aka "Bubble Nebula, Sh2-162 or Caldwell11, is a Hydrogen emission nebula in constellation Cassiopeia. It locates near the open cluster M 52 at distance of about 11.000 light years from the Earth.
The bubble structure is created by a strong stellar wind, a radiation pressure, from massive hot magnitude 8,7 central star, SAO 20575, it can be seen in an image inside of the bubble, off centered at Right.
The bubble structure is created by a strong stellar wind, a radiation pressure, from massive hot magnitude 8,7 central star, SAO 20575, it can be seen in an image inside of the bubble, off centered at Right.
Bubble is an expanding shock front inside a giant molecular cloud and it has a diameter more than Six light years. The spherical formation is expanding at speed of 6500.000 km/h, due the huge scale and distance we can't see the movement easily. In a century, the bubble in this image will be only about one pixel wider, than now! ( ~1 arc second)
Strong UV-radiation from a central star ionized elements in a gas and makes them glow at typical wavelength to each element. (Hydrogen glows Red light as Sulfur, Oxygen emits Green/Blue light at visible wavelengths)
If you are interested about color schemes used in my images, I wrote a small study about them, please, have a look here: http://astroanarchy.blogspot.com/2009/11/colors-in-astro-images.html
Images are in HST-palette, (HST=Hubble Space Telescope)
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Star colors are mixed from the NB channels, Red=H-a, G=O-III and B= 85%O-III + 15%H-a.
NOTE. The size of the full Moon (0,5 degrees) is marked as a gray circle in all of the images.
NOTE. The size of the full Moon (0,5 degrees) is marked as a gray circle in all of the images.
Images used in the series above from Left to Right
- A wide field mosaic from the Bubble and Sharpless 157 to the Wizard Nebula at Right. Images are taken with a Tokina AT-X 300mm camera lens.
- A Sh2-157 and Bubble Nebula part of the mosaic, Tokina AT-X 300mm
- Zoomed in version from the previous image
- A close up of the Bubble Nebula imaged with a Meade LX200 GPS 12" telescope, focal lenght ~2000mm.
- A zoomed in version of image above.
Vertical versions can be seen here:
and
Sunday, July 24, 2011
NGC7380, the "Wizard Nebula" in natural colors, apparent scale in the sky
I have shot many targets with several focal lengths.
Due that, I will publish some of my material as an image sets, with different field of view and detail levels.
The fractal nature of our universe stands out nicely by this way and it will make the orientation more easy.
Many times, it's difficult to understand the image scale of astronomical images.
Due that, I will add a Moon circle in some of the images to show the angular scale in a sky.
The full Moon has an angular size of ~30 arc minutes, that's equal to ~0,5 degrees.
NGC 7380, Sharpless 142 (Sh2-142)
In constellation Cepheus
Sh2-142 alias NGC 7380, in natural color palette from the emission of ionized elements.
NOTE. The size of the full Moon (0,5 degrees) is marked as a gray circle in all of the images.
Scale study in HST-palette can be found here:
Images used in the series above from top to bottom
- A wide field mosaic from the Bubble and Sharpless 157 to the Wizard Nebula at Right. Images are taken with a Tokina AT-X 300mm camera lens.
- A Sh2-142, the Wizard Nebula part of the mosaic, Tokina AT-X 300mm
- Zoomed in version from the previous image
- A close up of the Nebula imaged with a Meade LX200 GPS 12" telescope, focal lenght ~2000mm.A zoomed
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