Showing posts with label research and development. Show all posts
Showing posts with label research and development. Show all posts
Thursday, April 10, 2014
Tone Mapping V2.0, my lecture at NEAIC conference, New York
Click the image to download a PDF-tutorial
Click the image to download a PDF-tutorial
I'm offering my development work for free.
Donations are welcome especially since I don't have any equipments to continue my imaging work.
Saturday, January 25, 2014
A zoom in series of the Cave Nebula, Sh2-155
Now and then I have published some zoom in series of various objects imaged by me.
The purpose is to show the apparent scale in the sky. Beside that, this series shows nicely the fractal nature of our universe. Series are possible to make, since I have shot many objects with various focal lengths.
Like this one is shot with 200mm, 300mm and ~2000mm focal lengths
The Cave Nebula, a study about the scale in the sky
Note. A circle, size of the Moon, in the images as a scale. (An apparent scale of the Moon is 0,5 degrees, or 30 arc minutes.)
Note. A circle, size of the Moon, in the images as a scale. (An apparent scale of the Moon is 0,5 degrees, or 30 arc minutes.)
All images are in Mapped colors from the emission of ionized elements,
R=Sulfur, G=Hydrogen and B=Oxygen.
Orientation in constellation Cepheus
An orientation in constellation Cepheus. The mosaic image covers an area of ~18x10 dgrees.
Tuesday, January 7, 2014
NGC 6992, Eastern Veil, an ionized Oxygen only
Eastern Veil was my opening image of the Autumn season 2013.
I just made a new image out of it. This photo shows only an emission of the ionized Oxygen.
NGC 6992
A portion of the Eastern Veil in Oxygen light
An emission of ionized Oxygen in Eastern Veil Nebula.
An original image shows three emission lines, H-alpha, Sulfur II and Oxygen III
Link to an original blog post with the technical details HERE.
Three emission lines as an animation
I just made a new image out of it. This photo shows only an emission of the ionized Oxygen.
NGC 6992
A portion of the Eastern Veil in Oxygen light
An original image shows three emission lines, H-alpha, Sulfur II and Oxygen III
Three emission lines as an animation
Thursday, June 6, 2013
Pelican Nebula zoom in series and the scale in a sky
I have shot many targets with several focal lengths. Due to that, I will publish some of my material as image sets, with a different field of view and level of details. The fractal nature of our universe stands out nicely in this way and it will make the orientation more easy.
Many times, it's difficult to understand the image scale of astronomical images.
Therefore I have added a "Moon circle" in the images to show the angular scale in the sky. The full Moon has an angular size of ~30 arc minutes, that's equal to ~0,5 degrees.
Be sure to click for a full size image!
Note. a circle, size of the full moon, as a scale.
A largish image, 7.5MB and 1356x5487 pixels
The North America and Pelican nebulae can be seen at upper left corner.
Images used in this zoom in series
Technical details behind the links
- Part of the large, 18-panels, mosaic of the Cygnus, imaged with a Canon 200mm f1.8 lens, QHY9 astronomical camera and the Baader narrowband filters: http://astroanarchy.zenfolio.com/p1072219942/h1a60116f
- North America and the Pelican Nebulae, imaged with a Tokina AT-X 300mm f2.8 lens, QHY9 astronomical camera and the Baader narrowband filters: http://astroanarchy.zenfolio.com/p1072219942/h2c811434#h2c811434
- Part of the large, 18-panels, mosaic of the Cygnus, imaged with a Canon 200mm f1.8 lens, QHY9 astronomical camera and the Baader narrowband filters: http://astroanarchy.zenfolio.com/p1072219942/h3f92be2d#h3f92be2d
- A closeup of the Pelican Nebula, imaged with the Meade LX200 GPS 12" f5 telescope, QHY9 astronomical camera and the Baader narrowband filters: http://astroanarchy.zenfolio.com/p1072219942/h35663238#h35663238
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
Sunday, May 12, 2013
A starless Melotte 15 in IC 1805, the Heart Nebula
For some reason, 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, I think.
A starless Melotte 15 in IC 1805
Original image with a technical details can be seen in THIS blog post.
Image with the stars
Original image with a technical details can be seen in THIS blog post.
INFO
The "Heart Nebula", IC1805 locates about 7500 light years away in constellation Cassiopeia. This is an emission nebula showing glow of ionized elements in a gas cloud and some darker dust lanes.
In a very center of the nebula, lays Melotte 15, it contains few very bright stars, nearly 50 times mass of our Sun, and many dim ones. The solar wind, a radiation pressure, from massive stars makes the gas twist to a various shapes.
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
18 x 1200s exposures for the H-alpha, emission of ionized Hydrogen = 6h
Tuesday, November 27, 2012
A Zoom in animation about the Veil nebula
I have done several studies about the apparent scale of several objects, to show, how large they really are in the sky. My older studies can be seen HERE (Just scroll down a bit, at the end of the page, click "Older posts" to see more.) I have imaged same targets with several focal lengths, form 200mm up to 3000mm, this time I made an animated GIF out of my material.
Veil Nebula, a supernova remnant in Cygnus
An animated zoom in series, from a four to about a 0,4 degrees field of view
Note. A size of the Moon is marked as a white circle, at the center of the images.
The apparent size of the Moon is ~30', that's equal to 0,5 degrees.
Images used in this animation can be seen here:
http://www.astroanarchy.blogspot.fi/2012/11/veil-nebula-collection-as-poster.html
Tuesday, October 2, 2012
An experimental animation of IC 1340
In this experimental animation the nebula, IC 1340, can be seen with and without stars.
Sometimes it's easier to see complex shapes of nebula without stars, specially if it locates in a very dense star field. Human brains has an ability to create some quasi-logical shapes out of the random cloud of dots, like stars, and it can interferes the underlying shapes to be seen clearly.
Original image and imaging data can be seen in this blog post:
http://www.astroanarchy.blogspot.fi/2012/09/ic-1340-project-as-bi-color-from.html
Thursday, September 27, 2012
A scale study of the Veil Nebula supernova remnant
Many times, it's difficult to understand the image scale of astronomical images.
Therefore I have added a "Moon circle" in the images to show the angular scale in the sky. The full Moon has an angular size of ~30 arc minutes, that's equal to ~0,5 degrees.
A new scale study, the Veil Nebula
Note. The apparent size of the Moon is marked as a white circle for a scale.
Images used in this series:
Two images at top are shot with the Canon EF 200mm f1.8 camera lens and QHY9 astronomical camera with the narrowband filters:
Images at middle are shot with SkyWatcher 80 ED telescope at ~700mm focal length:
http://astroanarchy.blogspot.fi/2010/04/eastern-part-of-veil-nebula-as-stereo.html
Image at bottom is shot with Meade LX200 GPS 12" telescope at ~f5:
http://www.astroanarchy.blogspot.fi/2012/09/ic-1340-project-as-bi-color-from.html
Friday, August 24, 2012
Tulip Nebula, Sh2-101, a study about the scale in a sky
This time
I'm zooming from 23 to 0,5 degrees of sky at the direction of the Tulip Nebula,
Sh2-101 in Cygnus.
I have shot many targets with several focal
lengths. Due to that, I will publish some of my
material as image sets, with a different field of view and level of details. The fractal
nature of our universe stands out nicely in this way and it will make the
orientation more easy.
Many times, it's difficult to understand the
image scale of astronomical images.
Therefore I
have added a "Moon circle" in the images to show the angular scale in
the sky. The full Moon has an angular size of ~30 arc minutes, that's equal to
~0,5 degrees.
Click for a large image
A star map for the orientation
Images used in this series:
A giant, 18-panels, mosaic of the Cygnus constellation with 200mm canon EF at f1.8:
http://astroanarchy.blogspot.com/2011/12/cygnus-mosaic-18-panels-and-22-x-14.html
Closeup of Sh2-101, the "Tulip Nebula" with Meade LX 200 GPS, reduced to f5 ~2000mm:
http://astroanarchy.blogspot.fi/2011/01/tulip-nebula-sh2-101-wide-field-closeup.html
Wednesday, April 11, 2012
IC 410 in Auriga, the scale in a sky
I made this zoom in series to show the actual size of this object in the sky.
I have placed a white circle, at lover Left corners, in the image series below. It shows the angular size of the full Moon in the sky. Moon has an apparent diameter ~30 arc minutes, that's equal to 0,5 degrees.
Zooming into Auriga
sorry about large image, please, bear with me
sorry about large image, please, bear with me
Click for a large image. NOTE. a large image, 1024 x 3800 pixels and 4,5MB
Original images used for the zoom in series, with technical data, from top to bottom
- At top, a 12 panel mosaic of Auriga:
- An eight panel mosaic of IC 405 and 410, cropped from large mosaic above
- A four panel mosaic of IC 405 and 410:
- One panel image of IC 405 and 410:
- A cropped closeup from image above
- A closeup with a longer, 2000mm, focal length:
Wednesday, February 29, 2012
Siemis 147, the scale in a sky
"How much your telescope magnified?"
This HST-palette zoom in series has a "Moon circle" as a scale, to demonstrate the angular scale in a sky.
People generally seems to have a false idea, that high magnification is needed to capture deep space images.
In fact, many times it's quite contrary, targets are so large, that I have difficulties to fit them in my instruments field of view. Sample image here, Simeis 147, is shot with 200mm camera optics and it barely fits in image area.
Much more important, than magnification, is the light gathering power = aperture.
High magnification is needed for planetary imaging and some small angular size objects, like planetary nebulae and small galaxies.
I have placed a white circle in image series below, to show the angular size of the full Moon in the sky.
Moon has an apparent diameter ~30 arc minutes, that's equal to 0,5 degrees.
At first panoramic image at the Left three main objects are seen. At bottom lays IC 405 and IC 410, at top Siemis 147 (Sharpless 240, Sh2-240)
Original images used for the zoom in series, with technical data
Simeis 147:
IC 405 & 410:
A large collection of my scale studies can be found here:
Friday, January 13, 2012
Cygnus zoom in series
Weather, up here 65N, doesn't give any support so I made an other zoom in series.
This time I'm zooming from 23x14 to 0,5x0,7 degrees of sky at the are of NGC 7000 in Cygnus.
Older series can be seen in my portfolio: http://astroanarchy.zenfolio.com/p162076373
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.
Cygnus zoom in series, a study of the apparent scale in the sky.
Note. The apparent size of the full Moon is marked as a gray circle at lover Right corner.
Images are in mapped colors from emission of ionized elements, R=Sulfur, G=Hydrogen & B=Oxygen.
Location in the Sky, star map overlay
Images used in this series:
A giant, 18-panels, mosaic of the Cygnus constellation with 200mm canon EF at f1.8:
http://astroanarchy.blogspot.com/2011/12/cygnus-mosaic-18-panels-and-22-x-14.html
North America and Pelican Nebulae with 300mm Tokina AT-X at f2.8:
http://astroanarchy.blogspot.com/2011/11/ngc-7000-north-america-pelican-nebulae.html
Closeup of North America Nebula with Meade LX 200 GPS, reduced to f5 ~2000mm:
http://astroanarchy.blogspot.com/2010/09/ngc-7000-closeup-hst-palette-preview.html
Monday, October 24, 2011
Image processing test with Sharpless 119
I made a test, how image resolution gets effected by a stacking algorithm. When images are registered, they are moved and rotated by a fraction of the pixel accuracy. Depending on used algorithm, there will be some level of blurring in a final stacked image. In this test, CCDStack software is used to calibrate, register and stack the raw-images. Two similar processing are made from the same material, one with normal workflow and the second with images scaled up 200%.
10 x 1200s H-alpha with a QHY9 camera and the Tokina AT-X 300mm camera lens at f2.8.
"Mitchell" algorithm is used for up scaling all of the 200% sized frames.
An animation from a single, cropped and 400% up scaled, 1200s H-alpha exposure.
One image is registered and second not. HWFM in none registered image is 1,6 and in registered 2,4.
Method of register is most commonly used Bicubic B-spline.
One image is registered and second not. HWFM in none registered image is 1,6 and in registered 2,4.
Method of register is most commonly used Bicubic B-spline.
Down side of up scaling images to 200% large, is the needed amount of computer power and memory! Images will be four times large in file size. In this case a single frame, saved as a 16bit TIFF, will be about 130 MB.
CCDStack will use much more memory per image since images are internally processed as a 32bit floating point image space. All post processing in PhotoShop is done to a 200% sized version.
I have reprocessed Sh2-119 images with a new method, original versions can be found here: http://astroanarchy.blogspot.com/2011/10/sharpless-119-sh2-119.html
Sharpless 119
In constellation Cygnus, Ra 21h 18m Dec +44 00'
Image is in Natural color palette from the emission of ionized elements,
R=Hydrogen + Sulfur, G=Oxygen and B=Oxygen + Hydrogen.
HST-palette from an emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Technical details:
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 33 iterations.
Levels, curves and color combine in PS CS3.
Optics, Tokina AT-X 300mm camera lens at f2.8
Camera, QHY9
Guiding, Meade LX200 GPS 12" and a Lodestar guider
Guiding, Meade LX200 GPS 12" and a Lodestar guider
Image Scale, 3,5 arcseconds/pixel
Exposures H-alpha 10x1200s, binned 1x1O-III 3x1200s, binned 3x3
S-II 3x1200s, binned 2x2
Total exposure time ~5h
Sunday, October 9, 2011
An animation of DWB 111, the "Propeller Nebula", stars vs starless
The starless version shows the actual nebula. It's funny, how much details one can see from the nebula,
when all stars are removed. An experimental method used for star removal has become very accurate.
Note.
A starlike dot, in up center left, is a planetary nebula PK 79+5.1, a large bluish area,
to seven a clock direction from PK 79+5.1, is a possible planetary nebula PN PM 1-320.
This image was my first light for the Autumn season 2011.
Original blog post, with technical details, can be found from HERE.
Ps.
Above image of the Propeller Nebula, from Cygnus constellation, looks very much like a piece of marble tile bellow.
Sunday, August 14, 2011
Rosette Nebula, apparent scale in a sky, horizontal edition in two palettes
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.
"Rosette Nebula"
Ra 06h 33m 45s Dec +04° 59′ 54″, in constellation Orion
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.
Information about the Rosette Nebula
The Rosette Nebula (also known as Caldwell 49) is a large, circular H II region located near one end of a giant molecular cloud in the Monoceros. The open cluster NGC 2244(Caldwell 50) is closely associated with the nebulosity, the stars of the cluster having been formed from the nebula's matter. The cluster and nebula locates at a distance of about 5,200 light years from Earth. The diameter is about 130 light years.
The radiation from the young stars ionized the atoms in the nebula, causing them to emit light, typical to each element, producing the visible nebula. Stellar winds, radiation pressure, from a group of stars cause compression to the interstellar clouds, followed by star formation in the nebula. This star formation is currently still ongoing.
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.
1. Two panel mosaic of Cone and Rosette Nebulae. Shot with a Canon EF 200mm f1.8 lens, Baader NB-filters and QHY9 cooled astronomical camera.
2. The Rosette half of the mosaic image.
3. Rosette Nebula with a Tokina AT-X 300mm f2.8 lens, Baader NB-filter set and QHY9 astro camera.
4. Rosette closeup with Meade LX200 GPS 12" 2000mm, NB-filters and QHY9 camera.
Technical details for all of the images above, can be found in my portfolio:
http://astroanarchy.zenfolio.com/
Vertical versions can be seen here:
and here:
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
Thursday, August 11, 2011
Butterfly Nebula, apparent scale in the sky, a horizontal edition
I have shot many targets with several focal lengths.
Due that, I will publish some images 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.
The "Butterfly Nebula"
In constellation Cygnus
NOTE. The size of the full Moon (0,5 degrees) is marked as a gray circle in all of the images.
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.
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.
A vertical version of the series above:
Images used in the series above
First image is a three panel mosaic of the "Cygnus Trio"
Second one is two panels from a mosaic.
Third is a one panel
fourth is a zoomed crob from the above image.
The mosaic wide field was shot with a Tokina AT-X 300mm f2.8 camera lens with a QHY8 astro camera and a Baader narrowband filter set
All images in this page have been part of an older mosaic, the "Cygnus Trio"
It was my very first APOD (Astronomy Picture Of Day) published by NASA.
http://astroanarchy.blogspot.com/2008/11/apod.html
It was my very first APOD (Astronomy Picture Of Day) published by NASA.
http://astroanarchy.blogspot.com/2008/11/apod.html
Tuesday, August 9, 2011
The "Pelican Nebula", apparent scale in a sky, second edition
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.
Pelican Nebula
In constellation Cygnus
Click for a large images
HST-palette, (HST= Hubble Space Telescope)
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.NOTE. The size of the full Moon (0,5 degrees) is marked as a scale.
The Pelican Nebula (also known as IC5070 and IC5067) is an Hydrogen emission region associated with the North America Nebula in the constellation Cygnus. The nebula resembles a pelican in shape, hence the name. The Pelican Nebula is , close to Deneb, and divided from its brighter, larger neighbor, the North America Nebula, by a molecular cloud filled with dark dust. Distance is about 1800 light years
The Pelican Nebula (also known as IC5070 and IC5067) is an Hydrogen emission region associated with the North America Nebula in the constellation Cygnus. The nebula resembles a pelican in shape, hence the name. The Pelican Nebula is , close to Deneb, and divided from its brighter, larger neighbor, the North America Nebula, by a molecular cloud filled with dark dust. Distance is about 1800 light years
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.
Two images are used for the series, first is a wide field shot with a Tokina AT-X 300mm f2.8 camera lens.
Second image, at the bottom, is shot with a Meade LX200 GPS 12" reduced under 2000mm.
Baader narrowband filter set was used with both images, wide field was shot with a QHY8 and closeup with QHY9 cooled astronomical cameras.
Original images with technical details
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