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Showing posts sorted by date for query wizard. Sort by relevance Show all posts
Tuesday, February 1, 2011
Sh2-142, the "Wizard Nebula", wide field & a closeup reprocessed
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.
Sh2-142, the "Wizard"
Ra 22h 47.0m Dec 58° 06′
Image is 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.
NGC 7380 is an open cluster inside the nebula. The "Wizard Nebula" is also known as a Sharpless catalog number 142. (Sh2-142) The nebula is relatively large object located in constellation Cepheus about 7000 light years away.
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.
Image is shot with a QHY8 and the Tokina AT 300mm f2.8 lens at full aperture.
Original versions from November 2008, with technical details:
Sh2-142, the "Wizard" a closeup
Image is 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.
This is a newer closeup image of the actual nebula. It covers about 30 arc minutes horizontally.
Original processing from September 2010 and technical details can be found here:
Thursday, September 30, 2010
Animated 3D from two targets, the "Tarantula" & the "Wizard"
Animations are made by creating artificial parallax to an image. Then two images are animated together by using conversion web service, Start3D. There can be some artifacts in images, due the experimental nature of this work! The volumetric models are based on some known facts and an artistic impression.
Please, let the images load for few seconds to see them animated!
The "Tarantula Nebula"
Other 3D-formats can be found here:
Original 2D-image and details:
The "Wizard Nebula"
Other 3D-formats can be found here:
Original 2D-image and details:
NOTE! This 3D-study is a personal vision about forms and shapes, based on some known facts and an artistic impression.
Stereo pairs of two nebulae, the "Tarantula" & the "Wizard"
The "tarantula Nebula"
Parallel vision
Cross vision
Other 3D-formats can be found here:
Original 2D-image and details:
The "Wizard Nebula"
Parallel vision
Cross vision
Other 3D-formats can be found here:
Original 2D-image and details:
NOTE! This 3D-study is a personal vision about forms and shapes, based on some known facts and an artistic impression.
Viewing instructions can be found from a Right hand side menu.
Viewing instructions can be found from a Right hand side menu.
Anaglyph 3D from two targets, the "Tarantula" & the "Wizard"
The "Tarantula Nebula"
You'll need Red/Cyan Eyeglasses to be able to see this image right.
Note, if you have a Red and Blue filters, you can use them! Red goes to Left eye
Other 3D-formats can be found here:
Original 2D-image and details:
The "Wizard Nebula"
Other 3D-formats can be found here:
Original 2D-image and details:
NOTE! This 3D-study is a personal vision about forms and shapes, based on some known facts and an artistic impression.
Tuesday, September 28, 2010
A star suppression example
An animated image of the star and starless versions of the "Wizard Nebula"
I often use a starless image in one of the processing steps of the astronomical image.
Sometimes I publish the starless version too, it looks kind of nice, or spooky, that's a matter of taste.
If there is a dense star-field, nebula itself could be hard to detect. When stars are suppressed, the nebula can be seen better due the fact, that human brains tend to form false shapes from the cloud of dots.
Here is an example of my "Tone Mapping" technique:
A PDF-tutorial can be found behind this link:
Monday, September 27, 2010
Sh2-142, the "Wizard Nebula"
Sh2-142 alias NGC 7380, in HST-palette, (HST=Hubble Space Telescope)
from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
I use a starless image in one of the processing steps. Sometimes I publish it, since the actual nebula can be better seen by this way.
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.
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.
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
I have used color data from an older, 2008, wide field image of Sh2-142.
Technical details for image used for colors:
Tuesday, September 21, 2010
NGC 7380 and the "Wizard Nebula", start of the new project
NGC 7380, Sh2-142 , the "Wizard Nebula", locates in constellation Cepheus about 7000 light years from Oulu, Finland. The open star cluster has a catalog number NGC 7380. It's a relatively young cluster, about 5 million years. Nebula spans some 110 light years.
There is only 1h 20 min. H-a light for the object, due some technical problems. Ones again, I spend most of the night by fixing my ***** scope.
Seeing was better than usually, FWHM about 2,5".
Seeing was better than usually, FWHM about 2,5".
I'll shoot much more H-alpha data and other NB channels, S-II and O-III later.
Image is very noisy due the short exposure time.
Image is very noisy due the short exposure time.
Technical details:
processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack.
Levels and curves in PS CS3.
Telescope, Meade LX200 GPS 12" @ f5
Camera, QHY9 Guiding, SXV-AO @ 6Hz
Image Scale, 0,75 arcseconds/pixel
Exposures H-alpha 4x1200s, binned 1x1
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