Saturday, September 11, 2010
NGC 253, the "Silver Dollar" galaxy
A spiral galaxy in constellation Sculptor.
This galaxy is undergoing a period of intense star formation. Areas with a Blueish hue, are most active regions of the star formation. This is a nearby galaxy, distance is "only" about 11 million light years.
Largish target, apparent dimensions are, 27,5' x 6,8'. Longer axis is almost as wide as a full Moon (30')
A closeup to show the actual resolution. Note. there is hundreds of dim background galaxies in the image.
Technical details:
16" RCOS ja Apogee U9000 camera.
LRGB combo. An Australian remote telescope
14x600s for the Luminance and 2x600s / RGB-channel . Dark, Bias and Flat calibrated.
Raw data is shared by Petri Kehusmaa and J-P Metsavainio
Processing workflow:
Image acquisition, MaxiDL v4.xxx
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 30 iterations.
Levels, curves and color combine in PS CS3.
Friday, September 10, 2010
Opening image of the Autumn season 2010
Close up of the NGC 7000, the "North America" nebula.
Image is composed from O-III and H-a narrowband channels to a bi-color image.
This palette is close to a visiblel spectrum.
Last night we had about three hours of astronomical darkness, up here 65N.
I'll shoot more H-alpha and the S-III channel later.
An experimental starless version to show the actual nebula
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 @ 6Hz
Image Scale, 0,75 arcseconds/pixel
Exposures H-alpha 7x1200s, binned 1x1
O-III 1x1200s binned 3x3
Notes.
I had some problems with the camera orthogonality. Due that, stars at to and bottom are stretched.
I'll re shoot this material again after I have fixed the problem.
I had some problems with the camera orthogonality. Due that, stars at to and bottom are stretched.
I'll re shoot this material again after I have fixed the problem.
Wednesday, September 8, 2010
Galaxy NGC 613
NGC 613, barred spiral galaxy in southern constellation Sculptor.
Distance is about 65 million light years. Image is a broadband LRGB-composition.
This target has a smallish angular diameter, about 5,5' x 4,2'. I might try this one again with a better seeing, at this time seeing was about 3,5" FWHM.
The telescope:
Close up
Technical details:
16" RCOS ja Apogee U9000 camera.
LRGB combo.
9x600s for the Luminance and 1x600s / RGB-channel . Dark and Flat calibrated.
Raw data is shared by Petri Kehusmaa and J-P Metsavainio
Processing workflow:
Image acquisition, MaxiDL v4.xxx
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 30 iterations.
Levels, curves and color combine in PS CS3.
Thursday, August 26, 2010
A collection of astronomical movies from my images
All movies are published before in this blog. There has been very few viewers for them though, so I think reposting might be a good idea.
DEEP SKY TARGETS
Veil nebula as a 3D-transformation:
http://astroanarchy.blogspot.com/2009/12/new-version-about-veil-animation.html
Zoom in movies of Bubble and Soul nebulae:
http://astroanarchy.blogspot.com/2009/12/zoom-in-movie-test.html
Bubble nebula zoom out movie:
http://astroanarchy.blogspot.com/2010/01/bubble-zoomout.html
Heart nebula zoom out movie:
http://astroanarchy.blogspot.com/2010/01/hear-nebula-zoomout.html
Zoom out movies from Tulip and Crescent nebulae and Moon:
http://astroanarchy.blogspot.com/2010/01/three-new-zoomout-movies.html
IC410 and IC405 zoom in movie:
http://astroanarchy.blogspot.com/2010/01/ic-410-and-ic-405-as-zoomin-movie.html
M27 as a 3D-transformation movie:
http://astroanarchy.blogspot.com/2010/04/m27-experimental-3d-videos.html
Soul nebula 3D-conversion test:
http://astroanarchy.blogspot.com/2009/12/3d-conversion-testing.html
THE MOON
All Moon movies are made by re-projecting 2D-Moon image to a sphere. After that, the observation location can be freely selected, as long the area of interest stay on the visible area. I like this technique a lot, since the original image stays unprocessed!
Experimental Moon movies:
http://astroanarchy.blogspot.com/2009/05/new-video-material-from-astrotargets.html
(There is a movie of Andromeda galaxy as well)
A movie about principle of making Moon movies from 2D-material:
http://astroanarchy.blogspot.com/2009/06/how-to-3d-moon-movie.html
Moon movie experiments:
http://astroanarchy.blogspot.com/2009/06/more-experiments-with-3d-transform.html
Moon surface fly over movie:
http://astroanarchy.blogspot.com/2009/06/moon-surface-movie-from-2d-image.html
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