Tuesday, December 25, 2012
A detail from the Heart nebula
Have planned to shoot this detail for years. A pillar like formation at the North East corner of the IC 1805, the Heart Nebula. This is a very dim target, there is 8h of h-alpha emission captured and it's at a limit to be enough to show this object.
An unnamed object in IC 1805
Ra 02h 39m 43s Dec +61° 54′ 04″ Image is shot at 21.12.2012
Colors are mapped to a HST-palette, R=Sulfur, G=Hydrogen and B=Oxygen
An experimental starless image
This image shows just the nebulosity
Image in visual colors
Orientation in IC 1805
A two frame mosaic
This target was partly overlapping with my previous imaging project in IC 1805,
the Melotte 15, so I was able to build a two frame mosaic.
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
24 x 1200s exposures for the H-alpha, emission of ionized Hydrogen = 8h
Narrowband cahnnels for ionized Oxygen and Sulfur are taken from an older wide field image.
A single 20 min. exposure
Image is just calibrated, linearly stretched and scaled down.
Thursday, December 20, 2012
Caldwell 49, the "Rosette Nebula", reprocessed
Images are reprocessed with my new method. This new technique will provide better color handling, softer look and high details at the same time. I collected here my Rosette Nebula images, they form a kind of zoom in series, since I have shot this target with various instruments and different focal lengths .
Be sure to click the images to see them at a full glory.
"Rosette Nebula"
Ra 06h 33m 45s Dec +04° 59′ 54″, shot with a 200mm camera lens
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 Canon EF 200mm f1.8 lens, Baader narrowband filters and the QHY9, a cooled astronomical camera. Lens full open, exposure time ~4h
Closer look
Shot with a 300mm camera lens
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 Tokina AT-X 300mm f2.8 lens, Baader narrowband filters and the QHY9, a cooled astronomical camera. Lens full open, exposure time ~6h
Even closer look
Shot with a Meade LX200 12" telescope
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 Meade LX200 12" SC-telescope, Baader narrowband filters and the QHY9, a cooled astronomical camera, exposure time ~6h
INFO
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.
Images in mapped colors
Colors are mapped to a HST-palette, R=Sulfur, G=Hydrogen and B=Oxygen
Be sure to click the images to see them at a full glory.
A two panel mosaic
Rosette in wider context
This image shows the Rosette nebula in wider field, the Cone Nebula and the Christmas Tree Cluster can be seen at left. Image is in mapped colors.
A study about the scale in the sky, compared to a full Moon
Technical details
All technical details can be found from my portfolio:
Tuesday, December 18, 2012
Christmas Tree cluster, Cone and the Rosette Nebulae
Images are reprocessed with my new method. This new technique will provide better color handling, softer look and high details at the same time.
Be sure to click the images to see them at a full glory.
A Cone and the Rosette Nebulae
A two panel mosaic
R=Sulfur, G=Hydrogen and B=Oxygen.
Buy a photographic print from HERE
A Cone nebula and the Christmas Tree Cluster
A closeup from the left part of the mosaic above
(And yes, the names are real ones, I didn't made the up...)
(And yes, the names are real ones, I didn't made the up...)
This very seasonal closeup shows the Cone Nebula and a Christmas Tree Cluster around it.
Buy a photographic print from HERE
Cone Nebula closeup
Click for a large image
Rosette Nebula closeup
Click for a large image
Visual color compositions
Be sure to click the images to see them at a full glory.
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.
A closeup
INFO
In the constellation of Monoceros, just east of Orion, lies this huge nebulous duo with the famous Rosette Nebula at right and the Cone Nebula at left. The Rosette is easily recognized as a large flower to the left with bright central stars. In . The nebula on the left halves of the mosaic contains 'The Christmas Tree' star cluster in the center. The Cone Nebula lays at distance of ~2500 light years and the Rosette about a distance at 5200 light years.
An experimental starless image
This image shows the are with suppressed stars, the nebula itself stands out better by this way.
The scale in the sky
Zoom in image series with a Moon as a scale
Cone Nebula:
Rosette Nebula:
Technical details
Camera QHY9
Guiding QHY5
Optics Canon EF 200mm f1.8 lens, full open
Imaging platform and guiding LX200 GPS 12"
Exposures for Cone Nebula part:
H-a = 2 x 1200s
S-II = 2 x 600s
O-II = 2 x 600s
Exposures for Rosette Nebula part:
H-a = 3 x 1200s
S-II = 2 x 600s
O-III = 2 x 600s
Final image is 7000 x 2500 pixels and the resolution is 5,5 pixels/arc second
Original image from the year 2009
http://astroanarchy.blogspot.fi/2009/02/cone-and-rosette-nebula-mosaic.html
Monday, December 17, 2012
Heart Nebula collection
I collected my images of the Heart nebula in this blog post. Most of the images are reprocessed with my new method. This new technique will provide better color handling, softer look and high details at the same time.
I have shot many targets with instruments of different focal lengths, this makes possible to show the fractal nature of our universum, more and more details shows up as focal length gets longer.
Be sure to click the images to see them at full glory.
Heart Nebula, collection of IC 1805 images
Zooming to the heart of the Heart, Melotte 15.
Zooming to the heart of the Heart, Melotte 15.
Heart & Soul Nebulae
IC 1805 in mapped colors, from the emission of ionized elements,
R=Sulfur, G=Hydrogen and B=Oxygen.
Heart Nebula, IC 1805, Sharpless 190 (Sh2-190) in Cassiopeia
Ra 02h 32m 36s Dec +61° 29′ 2″
Center parts of the Heart Nebula
Melotte 15, the heart of the Heart
Tip of the Heart Nebula, a closeup
IC 1795, a bright area at the tip of the Heart Nebula
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.
A study about an apparent scale in the sky
Note, a Moon size circle as a scale, click for a large image!
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.
Technical data
Information for all of the images in this post, can be found from my portfolio:
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