Wednesday, December 18, 2013
A start of the new project, Cepheus mosaic part1
I'm about to make a similar mosaic out of constellation Cepheus, than I made out of constellation Cygnus.
The first part is ready now. It's a four panel mosaic showing two main objects, IC 1396 and the Sharpless 129 (Sh2-129). I managed to get visible an extremely dim planetary nebula candidate, OU4, inside the Sharpless 129.
The first part is ready now. It's a four panel mosaic showing two main objects, IC 1396 and the Sharpless 129 (Sh2-129). I managed to get visible an extremely dim planetary nebula candidate, OU4, inside the Sharpless 129.
Cepheus Mosaic part 1, four panels
Note. A largish image, 3MB and 1700 x 1300 pixels
Mapped colors from the emission of ionized elements,
R=Sulfur, G=Hydrogen and B=Oxygen.
Buy a photographic print from HERE
At this first part of the Cepheus mosaic, there are four individual panels stitched together. At lower right corner, there is the Sharpless object 129 (Sh2-129). The blueish area, inside Sh2-129, is a recently found plaentary nebula candidate, OU4. The famous astrophotographer, Nicolas Outters, has made this discovery, HERE is a paper about it. OU4 is an extremely dim formation. 11h of O-III light with very fast Canon 200mm EF f1.8 camera lens, was needed to have some hint about it.
I will continue this project, as soon as weather allows. The final mosaic will be 10-14 panels larg
Mosaic in visual spectrum
Note. A largish image, 3MB and 1700x1300 pixels
Image is in Natural color palette from the emission of ionized elements,
R=Hydrogen + Sulfur, G=Oxygen and B=Oxygen + Hydrogen.
Buy a photographic print from HERE
Buy a photographic print from HERE
A closeup of Sh2-129 and OU4
Image is in Natural color palette from the emission of ionized elements,
R=Hydrogen + Sulfur, G=Oxygen and B=Oxygen + Hydrogen.
Buy a photographic print from HERE
Buy a photographic print from HERE
Technical details
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 33 iterations, added at 50% weight
Levels, curves and color combine in PS CS3.
Optics, Canon EF 200mm camera lens at f1.8
Camera, QHY9
Guiding, Meade LX200 GPS 12" and a Lodestar guider
Image Scale, ~5 arcseconds/pixel
Exposures for H-alpha:
3x1200s for each panel,
Exposures for O-III:
33x1200s for Sh2-129 area
1x1200s/panel, for a star color.
The data from my older images are used for this mosaic
IC 1396, http://astroanarchy.blogspot.fi/2011/10/ic-1396-home-of-elephants-trunk-nebula.html
Sh2-129: http://astroanarchy.blogspot.fi/2011/06/panorama-mosaic-from-ic1396-to.html
3x1200s for each panel,
Exposures for O-III:
33x1200s for Sh2-129 area
1x1200s/panel, for a star color.
The data from my older images are used for this mosaic
IC 1396, http://astroanarchy.blogspot.fi/2011/10/ic-1396-home-of-elephants-trunk-nebula.html
Sh2-129: http://astroanarchy.blogspot.fi/2011/06/panorama-mosaic-from-ic1396-to.html
Monday, December 16, 2013
NGC 6823 and many many stars
This wide field image shows many targets in very dense star field. From the Sharpless catalog, Sh2-90 and Sh2-88, from the NGC catalog, NGC 6820, 6823 and 6830 and many other named objects.
NGC 6823
In constellation Vulpecula, click for a large image
Note, the "noise" in the image is actually countless number of stars.
Click for a large image, 1200x1700 pixels and 3,3MB
You can buy a real high quality photographic print from HERE
A detail
Orientation
An animation, stars vs starless
Click for a large image
A starless image shows some details, otherwise get buried under a massive amount of stars.
There are some filament like structures visible at lower left and lower middle.
Technical details
An animation, stars vs starless
Click for a large image
There are some filament like structures visible at lower left and lower middle.
Technical details
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 33 iterations, added at 33% weight
Levels, curves and color combine in PS CS3.
Optics, Canon EF 200mm camera lens at f1.8
Camera, QHY9
Guiding, Meade LX200 GPS 12" and a Lodestar guider
Image Scale, ~5 arcseconds/pixel
H-alpha, 12x1200s = 4h
O-III, 12x1200s = 4h
Total exposure time 8h
O-III, 12x1200s = 4h
Total exposure time 8h
Hydrogen emission only (H-alpha)
Saturday, December 14, 2013
APOD by NASA, Astro Anarchy gets published
Astronomy Picture of the Day
My shot of the Bubble Nebula was selected as an APOD (Astronomy Picture of the Day) by NASA.
You can see the NASA page here: http://apod.nasa.gov/apod/ap131214.html
The Bubble Nebula
In constellation Cassiopeia
Originla blog post about this image, with technical details, can be seen here:
You can buy a real high quality photographic print from HERE
This is my sixth APOD, older ones can be seen here:
Thursday, December 12, 2013
An other supernova remnant in Cygnus, G65.3+5.7 SNR
This is a rarely imaged target. I haven't been able to find an other color image of it, showing the whole supernova remnant. This is also one of the most difficult targets, I have ever shot. Due to very dense star field, large angular dimension and a very diffused structure this is even more difficult target, than a Simeis 147 supernova remnant in Taurus. Total exposure time of 32h was needed to have this kind of "thin" image.
G65.3+5.7 SNR has about the same angular dimensions, than brighter and more famous remnant in Cygnus, the Veil Nebula. The angular dimensions are about 3x4 degrees.
NOTE, this image is updated at 20.01.2014. There is now a better H-a channel and the background is practically full of ionized Hydrogen, H-alpha.
NOTE, this image is updated at 20.01.2014. There is now a better H-a channel and the background is practically full of ionized Hydrogen, H-alpha.
G65.3+5.7 SNR
A supernova remnant in constellation Cygnus
A detail image of G65.3+5.7 SNR
So many stars...
Orientation
Technical details
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 33 iterations, added at 33% weight
Levels, curves and color combine in PS CS3.
Optics, Canon EF 200mm camera lens at f1.8
Camera, QHY9
Guiding, Meade LX200 GPS 12" and a Lodestar guider
Image Scale, ~5 arcseconds/pixel
H-alpha, 51x1200s = 17h
O-III, 45x1200s = 15h
Total exposure time 32h
A single calibrated and stretched 20min O-III frame
Heavily stretched 1200s frame of the strongest channel, ionized Oxygen (O-III), doesn't show much.
O-III, 45x1200s = 15h
Total exposure time 32h
A single calibrated and stretched 20min O-III frame
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