Saturday, June 5, 2010
An other Southern globular cluster, NGC 6752
NGC 6752, a globular cluster in constellation Pavo. Distance from Earth about 13000 light years.
100% crop from the core of NGC 6752
The telescope and technical information:
16" RCOS ja Apogee U9000 camera.
LRGB combo.
Luminance 7x300s and 8x150s, Dark and Flat calibrated.
Red 1x300s, Dark calibrated
Green 1x300s, Dark calibrated
Blue 1x300s, Dark calibrated
Raw data is shared with Petri Kehusmaa and J-P Metsavainio
Processing workflow:
Image acquisition, MaxiDL v4.xxx
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 10 iterations
Levels, curves and color combine in PS CS3.
Tucanae 47, a Globular cluster
LRGB image of Tucanae, NGC 104, globular cluster in constellation Tucana.
16700 light years away from Earth and 120 light years across.
Less compressed images here:
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Image field is about 30' x 30', half a degrees.
A new project, from Northern galactic remote telescope in Australia.
100% crop from the core of Tukanae 47.
The telescope and technical information:
16" RCOS ja Apogee U9000 camera.
LRGB combo.
Luminance 12x300s and 8x150s, Dark and Flat calibrated.
Red 5x300s, Dark calibrated
Green 5x300s, Dark calibrated
Blue 5x300s, Dark calibrated
Raw data is shared with Petri Kehusmaa and J-P Metsavainio
Processing workflow:
Image acquisition, MaxiDL v4.xxx
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 10 iterations
Levels, curves and color combine in PS CS3.
Friday, June 4, 2010
M8, the "Lagoon nebula"
HST-palette from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen
This composition is very close to a visual spectrum.
Less compressed images here:
-
M8, the "Lagoon nebula" in Constellation Sagittarius.
Image field is about 30' x 30', half a degrees.
A new project, from Northern galactic remote telescope in Australia.
The Lagoon nebula, M8, in ionized light from the Three elements, H-alpha, O-III and S-II.
100% crop from the image of M8
The telescope and technical information:
16" RCOS ja Apogee U9000 camera.
LRGB combo.
H-alpha 4x1200s, Dark and Flat calibrated.
O-III x1200s, Dark calibrated
O-III x1200s, Dark calibrated
Raw data is shared with 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.
Edit 05.06.2010
Here is a Starless version of M8, I like to do some tricks with the images and the results are experimental in nature. Actual nebula can be seen better here.
Edit 05.06.2010
Here is a Starless version of M8, I like to do some tricks with the images and the results are experimental in nature. Actual nebula can be seen better here.
Tuesday, June 1, 2010
Viewing 3D
Finnish-Suomeksi
Nähdäksesi anaglyph 3D-kuviani tarvitset Puna-Sinilasit!
Ne ovat yleensä erittäin edullisia, 1-2€, ja helposti ostettavissa onlinemyymälöistä.
Suomessa laseja voi ostaa ainakin täältä:
http://www.dealextreme.com/search.dx/search.3d%20glasses
http://www.dealextreme.com/search.dx/search.3d%20glasses
HUOM!
Lasien linssien täytyy olla PUNAINEN ja SINININEN, jotta kuvat näkyisivät oikein.
-
English
To see my anaglyph Red/Cyan 3D-images, you'll need a right kind of 3D-eyeglasses!
They are usually very inexpensive and can be bought online easily.
Here are few links:
USA, http://www.berezin.com/3D/3dglasses.htm
There is many online sellers for 3D-glasses, google them down to find a suitable seller in you area.
EDIT. Finnish only, sorry!
Huomasin juuri, että samassa Suomalaisessa verkkokaupassa, jossa myydään 3D-laseja, on myynnissä 9€ hintainen stereokuvien katselulaite:
http://www.elektroni.fi/?product=5452
Ko. laitteella voi katsella stereopari-paerikuvia 3D-muodossa!
Täältä voi tilata stereoparikuviani valokuvina: http://astroanarchy.zenfolio.com/p272573124
EDIT. Finnish only, sorry!
Huomasin juuri, että samassa Suomalaisessa verkkokaupassa, jossa myydään 3D-laseja, on myynnissä 9€ hintainen stereokuvien katselulaite:
http://www.elektroni.fi/?product=5452
Ko. laitteella voi katsella stereopari-paerikuvia 3D-muodossa!
Täältä voi tilata stereoparikuviani valokuvina: http://astroanarchy.zenfolio.com/p272573124
Hinta 1,95€ kappale, vähän isompi koko, joka vielä toimii, 3,95€
Katselulaitteen kanssa siis toimivat vain "parallel vision" tekniikalla katseltavat kuvat.
My Anaglyph images
Katselulaitteen kanssa siis toimivat vain "parallel vision" tekniikalla katseltavat kuvat.
My Anaglyph images
To see my Anaglyph Red/Cyan 3D-astronomical images, please use this link:
Nähdäksesi anaglyph 3D kuviani, ole hyvä ja klikkaa tätä linkkiä:
Nähdäksesi anaglyph 3D kuviani, ole hyvä ja klikkaa tätä linkkiä:
In my Blog, there is many anaglyph movies too:
Blogissani on useita anaglyph 3D elokuvaklippejä:
Blogissani on useita anaglyph 3D elokuvaklippejä:
Scroll down and don't forget to look older posts to see movies!
Rullaa alas postilistaa nähdäksesi elokuvia, älä unohda klikata "older posts" painiketta sivun alareunassa!
Rullaa alas postilistaa nähdäksesi elokuvia, älä unohda klikata "older posts" painiketta sivun alareunassa!
M16, the "Eagle nebula" as a 3D stereo pair
Parallel vision
Cross vision
Other 3D-formats can be found here:
Original 2D-image:
NOTE! This 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.
HOW?
I have been asked many times, how my 3D-images are done, so here it goes!
Viewing instructions can be found from a Right hand side menu.
HOW?
I have been asked many times, how my 3D-images are done, so here it goes!
All the original 2D-images are imaged by me.
Due the huge distances, no real parallax can be imaged to form a volumetric information.
I have developed a method to turn any 2D-astronomical image to a various 3D-formats. The result is always approximation of the reality, based on some known facts and an artistic impression.
What are the known facts?
By using a scientifically estimated distance of the object, I can organize right amount of stars front and behind the object.
(as then we know the absolute position of an object at our Milky-way)
There usually is a known star cluster or a star(s) coursing the ionization and stars can be placed in right relative position to the nebula itself .
Stars are divided to groups by apparent brightness, that can be used as a draft distance indicator, brighter the closer.
The nebula itself is emitting its own light, when ionized, typical to each element.
The thickness of the nebula can be estimated by its brightness.
Many other relative distances can be figured out just carefully studying the image, like dark nebulae must be front of bright ones.
The local stellar wind, radiation pressure, from the star cluster shapes the nebulae, pillar like formations must then point to a cluster for that reason.
Same radiation pressure usually forms kind of cavitation hole at the nebulosa, around the star cluster, by blowing away all the gas around it.
Same radiation pressure usually forms kind of cavitation hole at the nebulosa, around the star cluster, by blowing away all the gas around it.
Many other small indicators can be found from the image itself.
The artistic part is then mixed to a scientific part, rest is very much like a sculpting.
I have published a, little simplified, step by step tutorial about turning astronomical images to a 3D-stereo pairs under a PhotoShop. It can be found from here as a PDF: astroanarchy.blogspot.com/2009/04/neaic.html
WHY?
Firstly, they are great fun to do. Secondly, because I can.
3D-experiments seems to increase a public interest to a subject, as you might have noticed.
Personally, I have studied my astronomical images much deeper, than ever without 3D-modeling.
The 3D-studies have really add a new dimension to my hobby as an astronomical photographer. (pun intended)
M16, the "Eagle nebula" 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.
Other 3D-formats can be found here:
Original 2D-image:
NOTE! This is a personal vision about forms and shapes, based on some known facts and an artistic impression.
M83, the "Southern Pinwheel" as a 3D stereo pair
Parallel vision
Cross vision
Other 3D-formats can be found here:
Original 2D-image:
NOTE! This 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.
M83, the "Southern Pinwheel" 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.
Other 3D-formats can be found here:
Original 2D-image:
NOTE! This is a personal vision about forms and shapes, based on some known facts and an artistic impression.
Sunday, May 30, 2010
Astro anarchy gets published
NGC 6888 in HST-palette at National Geographic's "Daily Dozen"
May - Week 4
My image of the "crescent Nebula", NGC6888, was selected in a
"Daily Dozen" of National Geographic Magazine's webpage.
This was the selected image. Original post with details can be found HERE.
You can vote my image to be printed in National Geographic magazine.
Please, use this link to give a vote:
Saturday, May 29, 2010
M16 experiment, narrow band with a Broad band luminance.
HST-palette colors with a Broad band luminance. RGB-Stars.
Red=S-II, Green=H-a and Blue=O-III
Natural color narrow band composition with a Broad band luminance. RGB-Stars.
Red=70%Ha+30%S-II, Green=O-III and Blue=70%O-III+30%H-alpha.
In this experimental image, I have tested the method to use a clear filter luminance with a narrow band color. This is (only?*) scientifically correct method to use a luminance image with a narrow band colors, since a broad band luminance contains all the wave lengths used for color information.
I don't usually like to mix colors from a different imaging methods, like pure RGB and narrow band. In this case I have used RGB, real color, stars with an emission line image.
I don't usually like to mix colors from a different imaging methods, like pure RGB and narrow band. In this case I have used RGB, real color, stars with an emission line image.
Some astro imagers tend to use H-alpha channel as a luminance, due the higher details and better S/N than any other channel has. Even though the visual appearance might look better, other channels, O-III and S-II, has no information in H-a luminance and all details in there are lost!
(*I have to point out, I use H-a luminance with a many NB images but H-a is boosted with all the information in O-III and S-II channels used. I call this method "Tone Mapping". Step by step instructions can be found here: http://astroanarchy.blogspot.com/2009/04/neaic.html )
The original narrow band image, with technical details, of M16 can be found here:
http://astroanarchy.blogspot.com/2010/05/m16-eagle-nebula-in-hst-palette.html
Technical details
Imaged with a Northern Galactic members remote telescope in Australia, https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhT5xcPgdl42zGREyCwydFYagJMAi08LFbJBf0G3CN2kmyirDNtFbaj3xJ_bmA93X2t1nxBQX4uTWobfRYnYLT3TiqNZVZMbdW7hVlAVGWRYnTRndCGV9zhHmxvyEAHSz3sVHzVefaXEFg/s1600/NGTelescopeL.jpg
16" RCOS ja Apogee U9000 camera.
LRGB combo.
H-alpha 5x1200s, O-III 2x1200s, S-II 2x1200s . Dark and Flat calibrated.
Broad band luminance 15x300s.
RGB-colors Red 2x300s, Green 2x300s and Blue 2x300s.
Raw data is shared with Petri Kehusmaa and J-P Metsavainio
Processing workflow:
Image acquisition, MaxiDL v4.xxx
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 30 iterations.
Deconvolution with a CCDSharp, 30 iterations.
Levels, curves and color combine in PS CS3.
Friday, May 28, 2010
New target from the Australian Sky, M8
M8, the "Lagoon nebula" in Constellation Sagittarius.
New project, from Northern galactic remote telescope in Australia, has been started.
The Lagoon nebula, M8, in ionized Hydrogen light, H-alpha.
The telescope and technical information:
16" RCOS ja Apogee U9000 camera.
LRGB combo.
H-alpha 4x1200s, Dark and Flat calibrated.
Raw data is shared with 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.
Levels, curves and color combine in PS CS3.
Wednesday, May 26, 2010
M16, reprocessed
M16, the "Eagle nebula"
Close up.
I did this one again, since I carried away with processing at previous version!
"Less is more" as usually.
I haven't used to process so good data, than the Northern Galactic members telescope delivers.
-
imaged with a Northern Galactic members remote telescope in Australia, https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhT5xcPgdl42zGREyCwydFYagJMAi08LFbJBf0G3CN2kmyirDNtFbaj3xJ_bmA93X2t1nxBQX4uTWobfRYnYLT3TiqNZVZMbdW7hVlAVGWRYnTRndCGV9zhHmxvyEAHSz3sVHzVefaXEFg/s1600/NGTelescopeL.jpg
16" RCOS ja Apogee U9000 camera.
LRGB combo.
H-alpha 5x1200s, O-III 2x1200s, S-II 2x1200s . Dark and Flat calibrated.
Raw data is shared with Petri Kehusmaa and J-P Metsavainio
Processing workflow:
Image acquisition, MaxiDL v4.xxx
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 30 iterations.
Deconvolution with a CCDSharp, 30 iterations.
Levels, curves and color combine in PS CS3.
Narrow band lines are mixed to a HST-palette (Used generally with Hubble Space Telescope)
Red=S-II, Green=H-alpha and Blue=O-III
-
Original Blog post here, processing looks little heavy handed:
NGC 4945, Finalized
NGC 4945, edge on spiral Galaxy in constellation Centaurus.
I was able to finalize this version, since I now have all the needed calibration images, Dark, Bias and Flat frames. This beautiful, large, edge on galaxy is overlooked, since there is two showpieces at neighborhood, M83 and the Centaurus A.
NGC 4945, imaged with a Northern Galactic members remote telescope in Australia,
Technical details
16" RCOS ja Apogee U9000 camera.
LRGB combo.
22x300s for the Luminance and 4x300s / 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.
Deconvolution with a CCDSharp, 30 iterations.
Levels, curves and color combine in PS CS3.
Tuesday, May 25, 2010
Final version of M104, the "Sombrero galaxy"
M104, imaged with a Northern Galactic members remote telescope in Australia,
Final version of the Northern Galaxy members remote telescopes personal first light, Sombrero galaxy, M104.
Now all the sub exposures are Dark- and Flat-frame calibrated.
Close up.
Technical details
16" RCOS ja Apogee U9000 camera.
LRGB combo.
25x300s for the Luminance and 4x300s / RGB-channel . Dark and Flat calibrated.
Raw data is shared with Petri Kehusmaa and J-P Metsavainio
Processing workflow:
Image acquisition, MaxiDL v4.xxx
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 30 iterations.
Deconvolution with a CCDSharp, 30 iterations.
Levels, curves and color combine in PS CS3.
Monday, May 24, 2010
M20, the "Triffid nebula", Continues
Less compressed version, please, have a look in my Portfolio:
http://astroanarchy.zenfolio.com/p5990174/h388dbd45#h388dbd45
M20, imaged with a Northern Galactic members remote telescope in Australia,
Impressive instrumentation and great location in Souther Australia under a dark Sky, makes possible to go deep in very short time! Image above has only 70min. total exposure time, Luminance is 25 min.
I'll shoot more lights for this later.
Technical details
16" RCOS ja Apogee U9000 camera.
LRGB combo.
LRGB-image, Luminance=5x300s Red=3x300s, Green=3x300s and Blue=3x300s . Dark and Flat calibrated.
Raw data is shared with Petri Kehusmaa and J-P Metsavainio
Processing workflow:
Image acquisition, MaxiDL v4.xxx
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 30 iterations.
Deconvolution with a CCDSharp, 30 iterations.
Levels, curves and color combine in PS CS3.
Sunday, May 23, 2010
M16, the "eagle nebula" in HST-palette
M16, HST-palette, RGB-stars
Cropped detail from image n HST-palette and with a broad band RGB-stars.
I don't usually like to mix images, made with totally different technique. How ever, it's very common among many astro photographers to mix broad band stars to a narrow band image.
The reason is, there is no real stars colors in NB imaging and generally stars are heavily suppressed due the very narrow band width used in filters.
Some times it's a good thing to have little suppressed stars to be able to show the Nebulous better.
imaged with a Northern Galactic members remote telescope in Australia, https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhT5xcPgdl42zGREyCwydFYagJMAi08LFbJBf0G3CN2kmyirDNtFbaj3xJ_bmA93X2t1nxBQX4uTWobfRYnYLT3TiqNZVZMbdW7hVlAVGWRYnTRndCGV9zhHmxvyEAHSz3sVHzVefaXEFg/s1600/NGTelescopeL.jpg
16" RCOS ja Apogee U9000 camera.
LRGB combo.
H-alpha 5x1200s, O-III 2x1200s, S-II 2x1200s . Dark and Flat calibrated.
Raw data is shared with Petri Kehusmaa and J-P Metsavainio
Processing workflow:
Image acquisition, MaxiDL v4.xxx
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 30 iterations.
Deconvolution with a CCDSharp, 30 iterations.
Levels, curves and color combine in PS CS3.
Narrow band lines are mixed to a HST-palette (Used generally with Hubble Space Telescope)
Red=S-II, Green=H-alpha and Blue=O-III
EDIT. 25.05. 2010
All the pure HST-palette NB images are now updated. Stars are redone by using information from all the NB-channels. By this way, Stars are somehow large but overall feel is more natural, than by using stars from the H-alpha channel alone, as I have done before.
My "Tone mapping" procedure is used to make this image, a tutorial for it can be found here:
http://astroanarchy.blogspot.com/2009/04/neaic.html
Since stars doesn't have any relevant color information in HST-palette images, due the broad band nature of Star emission, I have developed a powerful method, Tone Mapping, to process NB images.
Now on I'll add a star information from all the channels, not just from H-a.
I will rewrite the "Tome Mapping" document in near future.
All NB Channels
Channels are "Tonemapped", all the high S/N components = Stars, are removed to build a well balanced color Map.
All the pure HST-palette NB images are now updated. Stars are redone by using information from all the NB-channels. By this way, Stars are somehow large but overall feel is more natural, than by using stars from the H-alpha channel alone, as I have done before.
My "Tone mapping" procedure is used to make this image, a tutorial for it can be found here:
http://astroanarchy.blogspot.com/2009/04/neaic.html
Since stars doesn't have any relevant color information in HST-palette images, due the broad band nature of Star emission, I have developed a powerful method, Tone Mapping, to process NB images.
Now on I'll add a star information from all the channels, not just from H-a.
I will rewrite the "Tome Mapping" document in near future.
All NB Channels
Channels are "Tonemapped", all the high S/N components = Stars, are removed to build a well balanced color Map.
A Starless "Color Map", build from channels above.
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