Showing posts sorted by date for query QHY8. Sort by relevance Show all posts
Showing posts sorted by date for query QHY8. Sort by relevance Show all posts
Monday, September 23, 2013
Sharpless objects, 223, 224 and 225 in Auriga, reprocessed
I'm waiting the weather to clear, to be able to open up my Autumn season. While waiting, I have practiced my processing skills, after a long Summer pause.
Sh2-223, 224 and 225
In constellation Auriga, click for a large image.
Image is in mapped colors, from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Image in visual spectrum
A closeup of the supernova remnant Sh2-224
Info
Sh2-224: http://it.wikipedia.org/wiki/Sh2-224
Sh2-225: http://it.wikipedia.org/wiki/Sh2-225
About the new processing
I have used a new technique to dig out a very dim background nebulae. A starless version of 16h H-a exposure is stretched to an extreme and a data in level of background bias is revealed.
To work, images, used with this technique, has to be perfectly calibrated with bisas corrected flats.
The power of this method can be seen easily, if the new image is compared to an older version HERE.
A data hiding near the background level is revealed in this starless image.
This "tone map" is used to boost an extreme dim background nebulae in the final image.
Technical details
Camera, QHY9
Optics, Canon EF 200mm f1.8 @ 1.8
Guiding, QHY5 and PHD-guiding
Imaging platform, LX200 GPS 12"
Exposures
H-alpha, 7x1200s, 13x2400s and an additional
15x1200s imaged with QHY8 and Tokina AT 300mm f2.8
O-III, 5x300s Binned 4x4
S-II. 5x300s. Binned 4x4 .
A single 1200s H-alpha frame
Calibrated, stretched and scaled down, no other processing
This single 20 min. exposure shows how dim this target really is.
There are very few images about this area of sky around.
There are very few images about this area of sky around.
Monday, September 16, 2013
An experimental 3D-study of the Heart nebula, IC 1805
I haven't been able to open up this season yet, since some of my equipment are not yet back from the factory service.
This is an experimental test with a 3D-conversion of my astronomical images. Only real elements from my original image are used, there is nothing added but the volumetric information!
NOTE. This is a personal vision about shapes and volumes, based on some scientific data and an artistic impression.
Heart Nebula, IC 1805, as an experimental 3D-model
NOTE. A largish image, about 7.5MB, let it load for few seconds.
My original image of the Nebula is used for the animation
Click for the large image
Image in natural color is taken with the SW 80ED telescope, QHY8 astronomical camera and the Baader UHC-s filter. Exposure time ~5h.
More 3D-experiments can be seen here:
http://www.astroanarchy.blogspot.fi/search/label/animations
3D-experiments in different stereo formats can be seen here:
http://astroanarchy.zenfolio.com/f359296072
http://www.astroanarchy.blogspot.fi/search/label/animations
3D-experiments in different stereo formats can be seen here:
http://astroanarchy.zenfolio.com/f359296072
Friday, March 29, 2013
Owl nebula, Messier 97
This seems to be my last image for the winter season 2013.
M97, the Owl nebula
in constellation Ursa Major
Click for a large image.
Image is in visual spectrum, red light is emitted by an ionized Hydrogen, H-alpha. Blueish hues are from ionized Oxygen, O-III. Some of the colors, like stars, are shot simultaneously with H-a emission by using QHY8 color camera, Tokina AT-X 300mm f2.8 camera lens and Baader UHCs-filter.
INFO
In my image the outer shell of ionized Oxygen, O-III, can be seen around the round nebula. It's very rarely imaged, I found just couple of images, taken with large 2-3 meter telescopes, showing it. I did use my "Tone Mapping" technique to dig out this very faint signal.
The Owl Nebula, M97, is located about 2,600 light-years away toward the bottom of the Big Dipper's bowl. M97, from Messier's list of objects, its round shape along with the placement of two large, dark "eyes" do suggest the face of a staring owl. One of the fainter objects in Messier's catalog, the Owl Nebula is a planetary nebula, a dying sun-like star as it runs out of nuclear fuel. In fact, the Owl Nebula offers an example of the fate of our Sun as it runs out of fuel in another 5 billion years. The nebula spans over 2 light-years.
A drawing of Owl Nebula from 1848
I wanted to place this sympathetic image here, It's a drawing of Owl nebula by William Parson back from 1848.
O-III channel processing
to show the outer shell structure
Click to see large image
- Calibrated and stretched stack, 8h of exposures.
- Stars are removed by using several iterations of "dust and scratches" filter under PhotoShop.
- Levels are set.
- First iteration of curves.
- Second iteration of curves, second set of "dust and scratches" filtering to remove background unevenness, mild gaussian blur and some median filtering (5x5) to reduce noise level
- Finally image number 5 is combined with second image from top to have both, core details and the outer halo.
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 4Hz
Image Scale, ~0,8 arc-seconds/pixel
Exposures from three different nights, 16., 26. and 29.03 2013
H-alpha 18x1200s, binned 1x1 = 6h
O-III 24x1200s, binned 1x1 = 8h
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Color exposures with QHY8 single shot color camera and Tokina AT-X 300mm f2.8 lens.
36x600s exposures with UHCs-filter = 6h
Wednesday, March 27, 2013
Jones-Emberson 1, the project continues
The Jones-Emberson 1, project continues. I shot five more hours of O-III (light emitted by an ionized Oxygen.) to this planetray nebula. The area of O-III seems to be more extended, than most of the images around are showing.
At previous mail, I wrote about a possible outer halo in this PN. I have not collected enough information to confirm it, even though I shot five more hours with my fast imaging system, Tokina AT-X 300mm f2.8 lens, UHCs-filter and QHY8 camera. It's very much possible, that there is nothing after all but we'll see at end of the next season, spring 2014.
Generally the new O-III data gives a softer look to this extremely dim planetary nebula. The total exposure time is now ~36h, with wide field color data.
Jones-Emberson 1
Ra 07h 57m 51.628s Dec +53° 25′ 16.96
PK 164+31.1 a planetary nebula in Lynx
Buy a photographic print from HERE
A cropped full size image, this is a large object as a planetary nebua.
Image is in visual spectrum and dominated by the red light emitted by ionized Hydrogen, H-alpha. Blueish hues are from ionized Oxygen, O-III. Some of the colors are shot simultaneously with H-a emission by using QHY8 color camera, Tokina AT-X 300mm f2.8 camera lens and Baader UHCs-filter.
A wider field
Buy a photographic print from HERE
INFO
There are many background galaxies in this image but they are not showing very well, due to narrowband imaging method. Galaxies and stars are broadband targets and they dim down much, when narrowband filters are used. I'll like to be able to shoot this from a dark location with a LRGB-method.
largish and very dim, planetary nebula.PK 164+31.1, sometimes known as a "Jones-Emberson 1" has an angular diameter of 6', 67" x 6', 67" and it locates in constellation Lynx. Distance from my home town Oulu, Finland, is about 1600 light years.
The tiny Blue central star is a white dwarf, the intense ultraviolet light emitted by this star makes elements in a ring glow. Ionized Hydrogen emits red light and the ionized Oxygen blue one.
Why the name "PK 164+31.1"?
PK comes from the names of Czechoslovakian astronomers Perek and Kouhutec. 1967 they created an extensive catalog of all of the known planetary nebulae in 1964. The number indicates the position in the sky. The alternative name "Jones-Emberson 1" is after its discoveries.
Five hours of new O-III data
Shot at 25.03. 2013
Five hours of new O-III data
Shot at 25.03. 2013
This image shows an example about my processing technique. I'm using a special technique of mine to dig out a very weak signal. The upper image shows a stacked, calibrated and heavily stretched 5h exposure of an O-III light. The image below shows the same data after star removing procedure . The signal from the ionized oxygen is then stretched much more and smoothed out by using a median filtering, 5x5, and some gaussian blur.
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 5Hz
Image Scale, ~0,8 arc-seconds/pixel
Exposures
H-alpha 21x1200s, binned 1x1 = 8h (A new set from the spring 2013.)
(Older sets from Spring 2010)
H-alpha 32x1200s, binned 2x2 and 7x1200s, binned 3x3 = 13h
O-III 2x600s, binned 4x4 and 1x1200s, binned 4x4 = 1h
O-III 15x1200s, binned 1x1, = 5h (A new set from the spring 2013.)
O-III 15x1200s, binned 1x1, = 5h (A new set from the spring 2013.)
S-II 3x600s, binned 4x4 and 1x1200s, binned 4x4 = 1h 20min.
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Color exposures with QHY8 single shot color camera, spring 2013
48x600s exposures with UHC-sfilter = 8h
48x600s exposures with UHC-sfilter = 8h
A single unprocessed 1200 second frame of H-a emission
A single 20 min. frame, just calibrated and nonlineary stretched to visible.
Imaged with the QHY9 camera, Baader 7nm H-alpha filter and Meade LX200 12" telescope.
Color data
This is a image used for colors only, it doesn't need to be high resolution, nor pretty, since there are very litle details in other than H-a channel.
A UHCs filtered data from Tokina AT-x 300mm f2.8 camera lens, total 8h.
Sunday, March 24, 2013
Jones-Emberson 1, a Palnetary Nebula
I have shot some new h-alpha data for this extremely dim planetary nebula. Total exposure time is now around 20h for the light emitted by an ionized Hydrogen alone. Colors are shot simultaneously with H-a by using the Tokina AT-X 300mm f2.8 camera optics, UHC-sfilter and a cooled single shot color astrocamera, QHY8. Exposure time for the color information is around 8h. Total exposure time used is ~23h.
NOTE!
An unknown outer shell structure might be visible in my color data! It can be an artifact though and much more exposures are needed to show it well enough to be sure. Explanation at the end of this post.
Jones-Emberson 1
Ra 07h 57m 51.628s Dec +53° 25′ 16.96
PK 164+31.1 a planetary nebula in Lynx
A cropped full size image, this is a large object as a planetary nebua.
Image is in visual spectrum and dominated by the red light emitted by ionized Hydrogen, H-alpha. Blueish hues are from ionized Oxygen, O-III. Colors are shot simultaneously with H-a emission by using QHY8 color camera, Tokina AT-X 300mm f2.8 camera lens and Baader UHCs-filter.
NOTE. An updated image, 5h of O-III data added 25.03.
NOTE. An updated image, 5h of O-III data added 25.03.
A wider field
NOTE. An updated image, 5h of O-III data added 25.03.
INFO
There are many background galaxies in this image but they are not showing very well, due to narrowband imaging method. Galaxies and stars are broadband targets and they dim down much, when narrowband filters are used. I'll like to be able to shoot this from a dark location with a LRGB-method.
largish and very dim, planetary nebula.PK 164+31.1, sometimes known as a "Jones-Emberson 1" has an angular diameter of 6', 67" x 6', 67" and it locates in constellation Lynx. Distance from my home town Oulu, Finland, is about 1600 light years.
The tiny Blue central star is a white dwarf, the intense ultraviolet light emitted by this star makes elements in a ring glow. Ionized Hydrogen emits red light and the ionized Oxygen blue one.
Why the name "PK 164+31.1"?
PK comes from the names of Czechoslovakian astronomers Perek and Kouhutec. 1967 they created an extensive catalog of all of the known planetary nebulae in 1964. The number indicates the position in the sky. The alternative name "Jones-Emberson 1" is after its discoveries.
Jones-Emberson 1, H-alpha emission alone
Image shows this planetary nebula in light emitted by an ionized Hydrogen, H-alpha. In color image, there is also light from an ionized Oxygen, O-III. (H-a emits red light and O-III green/blue light.)
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 5Hz
Image Scale, ~0,8 arc-seconds/pixel
Exposures
H-alpha 21x1200s, binned 1x1 = 8h (A new set from spring 2013)
(Older sets from Spring 2010)
H-alpha 32x1200s, binned 2x2 and 7x1200s, binned 3x3 = 13h
O-III 2x600s, binned 4x4 and 1x1200s, binned 4x4 = 1h
S-II 3x600s, binned 4x4 and 1x1200s, binned 4x4 = 1h 20min.
+
Color exposures with QHY8 single shot color camera, spring 2013
48x600s exposures with UHC-sfilter = 8h
48x600s exposures with UHC-sfilter = 8h
A single unprocessed 1200 second frame of H-a emission
A single 20 min. frame, just calibrated and nonlineary stretched to visible.
Imaged with the QHY9 camera, Baader 7nm H-alpha filter and Meade LX200 12" telescope.
Color data
This is a image used for colors only, it doesn't need to be high resolution, nor pretty, since there are very litle details in other than H-a channel.
A UHCs filtered data from Tokina AT-x 300mm f2.8 camera lens, total 8h.
Possible finding, an outer shell?
After removing all the stars from the color image above, I was able to stretch the individual color channels to an extreme, without blowing the stars. It is possible, that there is an unknown outer shell in this nebula!
It's possible, that this is just an artifact and much more exposures are needed to show it well enough to be sure. This season starts to be over up here 65N but I'll continue to study this at next spring season, 2014.
A very strongly stretched starless color image of Jones-Emberson 1, 8h exposure, shows a hint of an outer shell structure at mostly Right side at the image above. Outer shell seems to be a pure O-III emission and that's kind of typical to a many planetray nebulae. But as mentioned, this is speculation until I have more data.
Tuesday, March 19, 2013
Sharpless 261, the "Lower's Nebula"
This starts to be my final images for this season. We'll be out of an astronomical darkness in couple of weeks, up here 65N.
Difficult target just above the Orion, I have spent three night trying to collect enough photons to have a nice image. Sh2-261 doesn't rise very high up here, so I have only around three hours per night to shoot this.
I manged to collect five hours of H-a light and six hours UHCs-filtered colors. 11h total exposure time is not too much for this object.
Sharpless 261 (Sh2-261) , the Lower's Nebula
Image is in visual spectrum and dominated by the red light emitted by ionized Hydrogen, H-alpha. Blueish hues are from ionized Oxygen, O-III. Colors are shot simultaneously with H-a emission by using QHY8 color camera, Tokina AT-X 300mm f2.8 camera lens and Baader UHCs-filter.
INFO
SH2-261, or Lower's Nebula, is a Hydrogen Alpha emission region located in the upper area of Orion, near the Gemini constellation. Image covers about a same area as a full Moon. There is no information about the distance of this hydrogen cloud, so we are not able to determine how large it is.
The nebula is named after amateur astronomers Harold Lower and his son Charles, who discovered this nebula in 1939 from a picture taken with their homemade 8 inch, f/1 Schmidt camera.
Image in Hydrogen alpha light alone
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 7Hz
Image Scale, ~0,8 arc-seconds/pixel
15 x 1200s exposures for the H-alpha, emission of ionized Hydrogen = 5h
+
Color exposures with QHY8 single shot color camera
36x600s exposures with UHC-sfilter = 6h
36x600s exposures with UHC-sfilter = 6h
Friday, March 15, 2013
Rosette Nebula, a closeup, part II
I have combined the new Rosette data to an old one, from the year 2010.
New image has little different colors and much tighter stars. The natural color image, more or less red, is done by combining colors from wider field Rosette image to a closeup. Wide field image used is shot with Tokina 300mm f2.8 camera optics, UHC-s-filter and the QHY8 color camera. UHCs-filter from Baader delivers natural colors to the Nebula and stars. UHCs-data is shot simultaneously with new image of H-a emission.
Rosette Nebula & a star cluster NGC 2239
Ra 06h 33m 45s Dec +04° 59′ 54″
Image is in visual spectrum and dominated by the red light emitted by ionized Hydrogen, H-alpha. Blueish hues are from ionized Oxygen, O-III. Colors are shot simultaneously with H-a emission by using QHY8 color camera, Tokina AT-X 300mm f2.8 camera lens and Baader UHCs-filter.
¨
A new data alone
Image is in visual spectrum and dominated by the red light emitted by ionized Hydrogen, H-alpha. Blueish hues are from ionized Oxygen, O-III. Colors are shot simultaneously with H-a emission by using QHY8 color camera, Tokina AT-X 300mm f2.8 camera lens and Baader UHCs-filter.
A leaping Puma
A detail, from the image above, looks like a leaping puma!
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.
Rosette closeup in mapped colors
from narrowband channels
Image is in mapped colors from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
A new data alone
Image is in mapped colors from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
A wide field image of the Rosette Nebula
Image is in mapped colors from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Blog post about the image with technical data:
A study about an apparent scale
Click for a large image!
Note. A moon size circle in the images as a scale. (Moon has an apparent size of 0.5 degrees, that's equal to 30 arc minutes)
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 11Hz
Image Scale, ~0,8 arc-seconds/pixel
13 x 1200s exposures for the H-alpha, emission of ionized Hydrogen = 4h 20min.
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Data from 2010
H-alpha 13x1200s, binned 1x1
Colors are taken from my older wide field image, for a mapped color composition, and new UHCs-filtered image, for a visual color composition.
emission.
UHCs-filtered image
Shot for color information
This image is used just for the color information. Only 20min. of exposures.
Tokina 300mm f2.8 camera optics, UHC-s-filter and the QHY8 color camera. UHCs-filter from Baader delivers natural colors to the Nebula and stars. UHCs-data is shot simultaneously with new image of H-a emission.
Thursday, February 21, 2013
A new image, NGC 2174, the Monkey Head Nebula
Image from last Tuesday, 19.02. I managed to use a crack in almost unbreakable cloud cover.
Result, ~4h exposures for the ionized Hydrogen of NGC 2174, the Monkey Head Nebula.
While shooting with my old Meade 12", I shot colors simultaneously with the QHY8 astrocamera, Baader UHCs-filter and the Tokina AT-X 300mm f2.8 camera lens.
NGC 2174, the Monkey Head Nebula
In the constellation Orion
Image is in visual spectrum and dominated by the red light emitted by ionized Hydrogen, H-alpha. Blueish hues are from ionized Oxygen, O-III. Colors are shot simultaneously with H-a emission by using QHY8 color camera, Tokina AT-X 300mm f2.8 camera lens and Baader UHCs-filter.
Buy a photographic print from HERE
A closeup
Buy a photographic print from HERE
INFO
Image in mapped colors
Image is in mapped colors from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Star colors are shot with a QHY8 color camera, Tokina 300mm f2.8 optics and the Baader UHCs filter.
The open cluster IC 1590 can be seen at middle of the image.
Colors in the nebula are taken from this older image of mine:
Buy a photographic print from HERE
A study about the apparent scale in the sky
Note. A Moon size circle as a scale, click for a large image
More info about this scale study in blog post here:
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
12 x 1200s exposures for the H-alpha, emission of ionized Hydrogen = 4h
Optics and exposures used for colors
Tokina AT-X 300mm at f2.8
QHY8, a cooled single shot color camera
Baader UHC-s filter
Baader IR-cut filter
22x600s = 3,6h
Color channels for a mapped-palette image, O-III and S-II, are from an older image of mine.
A single unprocessed 1200 second frame of H-a emission
A single 20 min. frame, just calibrated and nonliterary stretched to visible.
Imaged with the QHY9 camera, Baader 7nm H-alpha filter and Meade LX200 12" telescope.
And yes, it really does look like a head of a monkey!
Wednesday, January 30, 2013
NGC 281, the Pac-Man Nebula
A new image from the last week, NGC 281, I spend four nights imaging but the bad seeing and some thin upper clouds ruined majority of my frames. I managed to get enough exposures for two images, the Soul Nebula detail and this shot of Pac-Man Nebula.
NGC 281, in Cassiopeia
Ra 00h 52m 59.3s Dec +56° 37′ 19″
Image is in mapped colors from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Star colors are shot with a QHY8 color camera, Tokina 300mm f2.8 optics and the Baader UHCs filter.
Image is taken at 21. Jan. and there are 23x20min H-alpha light collected for it, color data is borrowed from my older image of the NGC 281. This is the third time for my tandem camera system, Star and natural color of the nebula are shot at the same time, as the closeup image, with the QHY8 color camera and the Baader UHCs-filter. This filter delivers real colors for the stars, even though it's kind of narrowband filter.
INFO
NGC 281 is an H II region in the constellation of Cassiopeia. It includes the open cluster IC 1590 and several Bok globules (dark doo-dads at center of the Blue area). NGC 281 is also known as the Pac-Man Nebula for its resemblance to the video game character from early 80's.
NGC281 spans over 80 light years at its estimated distance of 9500 light years.
An experimental 3D study of NGC 281
This is a link to a 3D-movie, please, have a look:
NGC 281 in visual colors
Image is in visual spectrum and dominated by the red light emitted by ionized Hydrogen, H-alpha. Blueish hues are from ionized Oxygen, O-III. Colors are shot simultaneously with H-a emission by using QHY8 color camera, Tokina AT-X 300mm f2.8 camera lens and Baader UHCs-filter.
Buy a photographic print from HERE
A study about the shapes
Lines in the image are showing, how the pillar-like formations are all pointing to the source of solar wind and ionization, the open cluster IC 1590, inside the Pack_man Nebula.
There are some denser material at tip of the pillar like formations and it's able to resist the radiation pressure from the open cluster IC 1590, at the middle of the nebula. Typically those tips are future homes for newly born stars, as well as dark globules seen in the image. The same open cluster is coursing the ionization in Pac-Man Nebula by its radiation. each ionized element in the nebula emits light at the typical wave length.
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 12Hz
Image Scale, ~0,8 arc-seconds/pixel
24 x 1200s exposures for the H-alpha, emission of ionized Hydrogen = 8h
Optics and exposures used for colors
Tokina AT-X 300mm at f2.8
QHY8, a cooled single shot color camera
Baader UHC-s filter
Baader IR-cut filter
16x900s = 4h
Color channels for a mapped-palette image, O-III and S-II, are from an older image of mine.
A single unprocessed 1200 second frame of H-a emission
A single 20 min. frame, just calibrated and stretched. Imaged with the QHY9 camera, Baader 7nm H-alpha filter and Meade LX200 12" telescope.
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