Wednesday, November 22, 2017
Sharpless 119 in Cygnus, project continues
I have published first photo out of Sharpless 119 at 8.11. 2017, since then we have had a full cloud cover. Yesterdat we had about three hours of clear skies and I was able to shoot an other frame next to first one. My target is to make a six panel mosaic image out of the whole Sharpless 119.
Sharpless 119 as a two frame mosaic
Please, click for a full size photo
Image is in mapped colours, from the emission of ionized elements, R=Sulphur, G=Hydrogen and B=Oxygen. The photo covers about two square degrees of sky. (The full Moon spans about 0,5 degrees of sky.)
An experimental starless version
Please, click for a full size photo
INFO
Sh2-119, Sharpless 119, is a large complex of emission nebulosity in Cygnus constellation, about 2 degrees east of the North American Nebula. It is located just around 68 Cygni, a quite bright star of magnitude 5. (The most bright star in the photo)
A wider field image of the area, Canon 200mm f1.8 lens
Please, click for a full size image
Sharpless 119 can be seen at lower left corner. The white rectangle shows the location of the new photo. It spans about a square degree of sky. (The full Moon spans about 0,5 degrees of sky.)
This photo was taken with the Canon EF 200mm f1.8 lens and the QHY9 astrocam, Baader narrowband filter set at 2012.
An other wide field shot, Tokina AT 300mm f2.8 lens
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
Color combine in PS CS3
Levels and curves in PS CS3.
Imaging optics
Celestron Edge HD 1100 @ f10 with 0,7 focal reducer for Edge HD 1100 telescope
Mount
10-micron 1000
Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x 2 and SXV-AOL
Astrodon filter, 5nm H-alpha
Exposure times
H-alpha, 30x 1200s, binned 2x2 = 10h
O-III and S-II channels are borrowed form my older wide field photos.
Tuesday, November 14, 2017
An other detail from the Southern Cygnus
This has been the most cloudy Autumn season in twenty years.
I'm still processing material from couple of clear nights we had this Autumn. I made another individual image out of the material, I shot for the WR 134 mosaic image.
An other nameless detail from the Southern Cygnus
Please, click for a full size photo
Image in visual spectrum
Please, click for a full size photo
The mosaic image
Please, click for a full size photo
The location in Cygnus
Please, click for a full size photo
The area of the mosaic image above is marked as a white rectangle.
Info about this large mosaic image can be seen 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
Color combine in PS CS3
Levels and curves in PS CS3.
Imaging optics
Celestron Edge HD 1100 @ f10 with 0,7 focal reducer for Edge HD 1100 telescope
Mount
10-micron 1000
Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x 2 and SXV-AOL
Astrodon filter, 5nm H-alpha
Astrodon filter, 3nm O-III
Astrodon filter, 3nm S-II
Exposure times
H-alpha, 21 x 1200s, binned 2x2 = 7h
O-III, 6 x 1200s binned 4x4 = 2h
S-II, 6 x 1200s binned 4x4 = 2h
Total 11h
Monday, November 13, 2017
A miss shot
Now and then something goes wrong... Especially when the target is very dim, it's very easy to miss the whole target while aiming to it.
I was shooting my first light for the Autumn season 2017 and I thought that my telescope was centred to the WR 134. It was not, instead I shot some dim filaments of gas and lots of stars next to actual target.
Not much a photo but I didn't want to waste three hours of exposures so I made this image out of them. Color data is borrowed from my older mosaic image of the area.
Please, click for a full resolution photoI was shooting my first light for the Autumn season 2017 and I thought that my telescope was centred to the WR 134. It was not, instead I shot some dim filaments of gas and lots of stars next to actual target.
Not much a photo but I didn't want to waste three hours of exposures so I made this image out of them. Color data is borrowed from my older mosaic image of the area.
A miss shot
A large image of the area
Please, click for a full resolution photo
Sunday, November 12, 2017
WR 134, Ring Nebula in visual colors
I have published a mapped color version of WR 134 in Cygnus. Now I have made a visual color composition out of the narrow band channels, H-alpha, O-III and S-II. This composition is very close to a visual spectrum. The most powerful emission is from ionzed hydrogen, H-alpha. It emits light at red wavelength as well as ionized sulfur, S-II. Ionized oxygen, O-III, can be seen as blue color. There are very few photos out of this object. There are total 33 hours of exposures in this composition.
Please, click for a large image.
A closer look
Please, click for a large image.
A vertical composition
Please, click for a large image.
INFO
This image shows a ring-like nebula traced by the glow of ionized hydrogen and oxygen gas. Embedded in the region's interstellar clouds of gas and dust, the complex, glowing arcs are sections of bubbles or shells of material swept up by the wind from Wolf-Rayet star WR 134, brightest star near the center of the frame. Distance estimates put WR 134 about 6,000 light-years away, making the frame over 100 light-years across. Shedding their outer envelopes in powerful stellar winds, massive Wolf-Rayet stars have burned through their nuclear fuel at a prodigious rate and end this final phase of massive star evolution in a spectacular supernova explosion. The stellar winds and final supernovae enrich the interstellar material with heavy elements to be incorporated in future generations of stars. (Source, NASA APOD, https://apod.nasa.gov/apod/ap120621.html )
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
Color combine in PS CS3
Levels and curves in PS CS3.
Imaging optics
Celestron Edge HD 1100 @ f10 with 0,7 focal reducer for Edge HD 1100 telescope
Mount
10-micron 1000
Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x 2 and SXV-AOL
Astrodon filter, 5nm H-alpha
Astrodon filter, 3nm O-III
Astrodon filter, 3nm S-II
Exposure times
H-alpha, 51x 1200s, binned 2x2 = 17h
O-III, 9 x 1200s binned 4x4 = 8h
S-II, 9 x 1200s binned 4x4 = 8h
Total 33h
Wednesday, November 8, 2017
Sharpless 119 (Sh2-119) in Cygnus
This is my second light for the Autumn season 2017. This is a detail of the large emission area just couple of degrees from the North America nebula. It's very overlooked due to its low surface brightness and a close proximity of brighter and more famous emission targets.
I have plans to shoot the whole nebula as a mosaic of six image panels, when ever the weather permits.
Sharpless 119 in Cygnus (Sh2-119)
Please, click for a full size image
Image is in mapped colours, from the emission of ionized elements, R=Sulphur, G=Hydrogen and B=Oxygen. The photo spans about a square degree of sky. (The full Moon spans about 0,5 degrees of sky.)
An experimental starless version
Image in visual spectrum
Please, click for a full size photo
A wider field image of the area, Canon 200mm f1.8 lens
Please, click for a full size image
Sharpless 119 can be seen at lower left corner. The white rectangle shows the location of the new photo. It spans about a square degree of sky. (The full Moon spans about 0,5 degrees of sky.)
This photo was taken with the Canon EF 200mm f1.8 lens and the QHY9 astrocam, Baader narrowband filter set at 2012.
An other wide field shot, Tokina AT 300mm f2.8 lens
INFO
Sh2-119, Sharpless 119, is a large complex of emission nebulosity in Cygnus constellation, about 2 degrees east of the North American Nebula. It is located just around 68 Cygni, a quite bright star of magnitude 5. (The most bright star in the photo)
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
Color combine in PS CS3
Levels and curves in PS CS3.
Imaging optics
Celestron Edge HD 1100 @ f10 with 0,7 focal reducer for Edge HD 1100 telescope
Mount
10-micron 1000
Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x 2 and SXV-AOL
Astrodon filter, 5nm H-alpha
Exposure times
H-alpha, 21x 1200s, binned 2x2 = 7h
O-III and S-II channels are borrowed form my older wide field photos.
Friday, November 3, 2017
WR 134, Ring Nebula area as a mosaic image.
While shooting my first light photo for the Autumn season 2017, I shot some frames frames around it for a mosaic image.
A mosaic image of WR 134 area in Cygnus
Click for a large image.
The Wolf-Rayet shell, WR 134, can be seen as an oval shape at center up. There is a strong emission from ionized oxygen, O-III, it can be seen as blue color.
Image is in mapped colours, from the emission of ionized elements, R=Sulphur, G=Hydrogen and B=Oxygen.
A large six panel version of the mosaic image
Orientation in Cygnus
Click for a large image.
Info about this large mosaic image can be seen HERE
INFO
This image shows a ring-like nebula traced by the glow of ionized hydrogen and oxygen gas. Embedded in the region's interstellar clouds of gas and dust, the complex, glowing arcs are sections of bubbles or shells of material swept up by the wind from Wolf-Rayet star WR 134, brightest star near the center of the frame. Distance estimates put WR 134 about 6,000 light-years away, making the frame over 100 light-years across. Shedding their outer envelopes in powerful stellar winds, massive Wolf-Rayet stars have burned through their nuclear fuel at a prodigious rate and end this final phase of massive star evolution in a spectacular supernova explosion. The stellar winds and final supernovae enrich the interstellar material with heavy elements to be incorporated in future generations of stars. (Source, NASA APOD, https://apod.nasa.gov/apod/ap120621.html )
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
Color combine in PS CS3
Levels and curves in PS CS3.
Imaging optics
Celestron Edge HD 1100 @ f10 with 0,7 focal reducer for Edge HD 1100 telescope
Mount
10-micron 1000
Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x 2 and SXV-AOL
Astrodon filter, 5nm H-alpha
Astrodon filter, 3nm O-III
Astrodon filter, 3nm S-II
Exposure times
H-alpha, 51x 1200s, binned 2x2 = 17h
O-III, 9 x 1200s binned 4x4 = 8h
S-II, 9 x 1200s binned 4x4 = 8h
Total 33h
Thursday, November 2, 2017
First light for the Autumn season 2017, finally!
This Autumn season has been the most cloudy one, I have never publish my first light so late.
We have had only one clear night plus two nights with opening at clouds for few hours.
My first light for the Autumn season 2017 shows a rare and exotic target at Cygnus. It's a largely unknown Wolf-Rayet shell around the star WR 134.
I noticed this formation at first time in my large 18-panels mosaic of Cygnus. It's clearly visible, specially at Ionised oxygen channel (O-III)
A three frame mosaic of WR 134
Click for a large image.
The Wolf-Rayet shell can be seen as an oval shape at center up. There is a strong emission from ionized oxygen, O-III, it can be seen as blue color.
Image is in mapped colours, from the emission of ionized elements, R=Sulphur, G=Hydrogen and B=Oxygen.
WR 134
A starless version
Click for a large image.
The structure and shapes in ionized gas are easier to see in this experimental starless version.
(Note. the straight line at seven o'clock is not an artefact but a real shape.)Click for a large image.
Info about this large mosaic image can be seen HERE
INFO
This image covers a field of view about one square degree in the constellation Cygnus. It highlights the bright edge of a ring-like nebula traced by the glow of ionized hydrogen and oxygen gas. Embedded in the region's interstellar clouds of gas and dust, the complex, glowing arcs are sections of bubbles or shells of material swept up by the wind from Wolf-Rayet star WR 134, brightest star near the center of the frame. Distance estimates put WR 134 about 6,000 light-years away, making the frame over 100 light-years across. Shedding their outer envelopes in powerful stellar winds, massive Wolf-Rayet stars have burned through their nuclear fuel at a prodigious rate and end this final phase of massive star evolution in a spectacular supernova explosion. The stellar winds and final supernovae enrich the interstellar material with heavy elements to be incorporated in future generations of stars. (Source, NASA APOD, https://apod.nasa.gov/apod/ap120621.html )
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
Color combine in PS CS3
Levels and curves in PS CS3.
Imaging optics
Celestron Edge HD 1100 @ f10 with 0,7 focal reducer for Edge HD 1100 telescope
Mount
10-micron 1000
Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x 2 and SXV-AOL
Astrodon filter, 5nm H-alpha
Astrodon filter, 3nm O-III
Astrodon filter, 3nm S-II
Exposure times
H-alpha, 21x 1200s, binned 2x2 = 7h
O-III, 9 x 1200s binned 4x4 = 3h
S-II, 9 x 1200s binned 4x4 = 3h
Total 13h
Uncropped, calibrated and stretched single 20 min. H-alpha frame as it comes from the camera
Uncropped, calibrated and stretched single 20 min. O-III frame as it comes from the camera
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