Monday, January 17, 2011
Cone and Rosette Nebulae 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.
Cone & Rosette Nebulae
A two panel mosaic
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.
Both nebulae are located in constellation Orion.
Images are taken with a Canon EF 200mm f1.8 lens, at full aperture, with Baader NB filter set and the QHY9 camera.
Images are taken with a Canon EF 200mm f1.8 lens, at full aperture, with Baader NB filter set and the QHY9 camera.
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.
Star colors are mixed from the NB channels, Red=H-a, G=O-III and B= 85%O-III + 15%H-a.
Original version from Spring 2009, with technical details:
Cone Nebula part
Rosette Nebula part
Sunday, January 16, 2011
A supernova remnant, the "Veil Nebula" 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.
Veil Nebula
Ra 20h 45m 38.0s Dec +30° 42′ 30″
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.
optically it has lowish surface brightness.
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 older image from 2007 of Eastern part of the nebula, NGC 6995. Sky Watcher 80 ED with an UHC-s filter and QHY8. Exposure time about 4h.
Star colors are mixed from the NB channels, Red=H-a, G=O-III and B= 85%O-III + 15%H-a.
Original versions from Autumn 2008, with technical details:
I have made an experimental movie about the structure of the nebula. It can be found here:
Friday, January 14, 2011
NGC 6888, the "Crescent Nebula" 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.
NGC 6888
Ra 20h 12m 7s Dec +38° 21.3′[
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.
The Crescent Nebula, also known as NGC 6888, Caldwell 27 and Sharpless 105, is an emission nebula in constellation Cygnus, about 5000 light years distance.
It is formed by the fast stellar wind from the Wolf-Rayet star, WR 136 (HD 192163), colliding to an slower moving wind ejected by the same star when it became a red giant, around 400.000 years ago.
The result of the collision is a glowing shock shell around the star. Apparen size of the shell is 18' x 12' and the real size is about 25 x 16 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.
Star colors are mixed from the NB channels, Red=H-a, G=O-III and B= 85%O-III + 15%H-a.
Original version, Autumn 2009, with technical details:
NGC 6888 as a stereo pair 3D
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.
NGC 6888 as an anaglyph Red/Cyan 3D
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.
Original 2D:
NOTE! This is a personal vision about forms and shapes, based on some known facts and an artistic impression.
Wednesday, January 12, 2011
Sh2-129 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.
Sharpless129, wide field
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.
Sh2-129 is a diffused nebula in Cepheus. It locates about four degrees west from IC1396. This nebula has a very low surface brightness and there is very few images of it around, I haven't seen this in HST-palette before.
Image area is about three degrees wide. (Six full Moons side by side)
Star colors are mixed from the NB channels, Red=H-a, G=O-III and B= 85%O-III + 15%H-a.
Original version with technical details:
(Shot with a Canon EF 200mm f1.8 lens, full aperture, and QHY9 astro camera)
An older image shows the relation to IC1396.
HaRGB image mosaic with a Canon FD 200mm f2.8 lens and QHY8-astrocamera.
An older image shows the relation to IC1396.
HaRGB image mosaic with a Canon FD 200mm f2.8 lens and QHY8-astrocamera.
Sh2-129 as a Stereo Pair 3D
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.
Sh2-129 as an anaglyph Red/Cyan 3D
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.
Original 2D:
NOTE! This is a personal vision about forms and shapes, based on some known facts and an artistic impression.
Abell 21, Sh2-274, the "Medusa Nebula", project continues
Colors and image are in "preview" mode at the moment, I will shoot more data, when weather allows to finalize this image.
The Medusa Nebula in Gemini is also known as Abell 21 and Sharpless 274. It's a large nebula as a planetary one, due that the surface brightness is very low, between 15.99 to 25.
At highest elevation in South, it was about 35 degrees and when I started the altitude was only a 25 degrees.
I started this project back in March 14. 2010 with few frames of H-alpha. I was able to continue the project last night.
Previous version can be seen here:
http://astroanarchy.blogspot.com/2010/03/abell-21-sh2-274-medusa-nebula-start-of.html
After a long cloudy period, we had a clear night, with relatively good seeing. Transparency was very poor and the light pollution was massive due the local sport centers lights. This target is never very high, up here at 65N and a Local paper mill sent massive amounts of "smoke" over the object. At the end I was able to capture only 5 frames of H-a and three frames of S-II, before I had to close down.
There was only one O-III frame from last session,
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.
Previous version can be seen here:
http://astroanarchy.blogspot.com/2010/03/abell-21-sh2-274-medusa-nebula-start-of.html
After a long cloudy period, we had a clear night, with relatively good seeing. Transparency was very poor and the light pollution was massive due the local sport centers lights. This target is never very high, up here at 65N and a Local paper mill sent massive amounts of "smoke" over the object. At the end I was able to capture only 5 frames of H-a and three frames of S-II, before I had to close down.
There was only one O-III frame from last session,
Technical details:
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack.
Levels, curves and color combine in PS CS3.
Telescope, Meade LX200 GPS 12" @ f5
Camera, QHY9 Guiding, SXV-AO @ 4,5Hz
Image Scale, 0,75 arcseconds/pixel
Baader H-alpha 7nm 5x1200s, binned 2x2 +
Baader H-alpha 7nm 7x1200s, binned 1x1 from previous session at March 14.2010.
Baader O-III 8,5nm 1x1200s, binned 4x4
Baader S-II 8nm 3x1200s, binned 4x4
Monday, January 10, 2011
IC 443 reprocessed, Closeup and wide field
Since my processing technique gets better and weather doesn't give any support, I have reprocessed couple of older images. There is now star colors added and other processing is tweaked too.
IC 443, wide field
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.
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.
Star colors are mixed from the NB channels, Red=H-a, G=O-III and B= 85%O-III + 15%H-a.
Original version with technical details:
(Shot with a Tokina AT 300mm f2.8 lens and QHY9 astro camera)
IC 443, 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.
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.
Star colors are mixed from the NB channels, Red=H-a, G=O-III and B= 85%O-III + 15%H-a.
Original version with technical details:
(Meade LX 200 GPS 12" and QHY9 astro camera)
IC 443 as an animated 3D
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!
Sorry about artifacts in brighter stars...
Closeup as an 3D-animation
Other 3D-formats:
Original 2D:
NOTE! This is a personal vision about forms and shapes, based on some known facts and an artistic impression.
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