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Sunday, January 1, 2017

Bright nebulae of the central Cygnus, a seven panel mosaic



My last photo for the year 2016 is a seven panel mosaic of the central Cygnus. I shot last panels for this mosaic at 30.12. 2016. 


Bright nebulae of the central Cygnus
Please, click for a large image, 1800 x 1400 pixels

The photo is in mapped colors from the light emitted by an ionized elements, 
red=sulfur, green=hydrogen and blue=oxygen. A mosaic image with seven panels. Original image has a resolution of 12.000 x 9000 pixels. Image spans about three degrees of sky horizontally.


Orientation


Please, click for a large image

An older wide field photo with  the Canon EF 200mm f1.8 camera lens and Baader narrowband filters. Area of interest is marked as a white rectangle. Part of the color data is taken from this wide field photo.
Technical details

Processing work flow

Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 21 iterations, added at 25% weight
Color combine in PS CS3
Levels and curves in PS CS3.

Imaging optics
Celestron Edge HD 1100 @ f7 with 0,7 focal reducer for Edge HD 1100 telescope
Canon EF 200mm f1.8 camera optics (For S-II and O-III channels)
Mount
10-micron 1000
Meade LX200 GPS 12" (For S-II and O-III channels)

Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x2 and SXV-AOL
QHY9 (For S-II and O-III channels)

Astrodon filter, 5 nm H-alpha
Baader filter, 8,5 nm O-III
Baader filter, 8 nm S-II

Exposure times for all seven panels
H-alpha, 27 x 1200 s binned 2x2 
O-III, 18 x 1200 s binned 4x4 = 
S-II,  18 x 1200 s binned 4x4 = 



www.tips-fb.com Posted by J-P Metsavainio at 1:58 PM 0 comments
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Tuesday, December 27, 2016

Bright nebulae of the central Cygnus




I had about six hours of clear sky at night between 23.- 24.12. That was just enough to shoot this relatively bright emission area in constellation Cygnus.

Bright nebulae of Cygnus
Please, click for a large image

The photo is in mapped colors from the light emitted by an ionized elements, 
red=sulfur, green=hydrogen and blue=oxygen.


An experimental starless view
Please, click for a large image

The actual nebula stands out well in this starless version


Mosaic
Please, click for a large image

This new image was partly overlapping with my older image from Spring season 2016.
Older image. with technical details, can be found HERE 


Nebulae in visual colors
Please, click for a large image

Natural color composition from the emission of ionized elements, R=80%Hydrogen+20%Sulfur, G=100%Oxygen and B=85%Oxygen+15%Hydrogen to compensate otherwise missing H-beta emission. This composition is very close to a visual spectrum.


Orientation
Please, click for a large image

An older wide field photo with  the Canon EF 200mm f1.8 camera lens and Baader narrowband filters. 


Technical details

Processing work flow

Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 21 iterations, added at 25% weight
Color combine in PS CS3
Levels and curves in PS CS3.

Imaging optics
Celestron Edge HD 1100 @ f7 with 0,7 focal reducer for Edge HD 1100 telescope
Canon EF 200mm f1.8 camera optics (For S-II and O-III channels)
Mount
10-micron 1000
Meade LX200 GPS 12" (For S-II and O-III channels)

Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x2 and SXV-AOL
QHY9 (For S-II and O-III channels)

Astrodon filter, 5 nm H-alpha
Baader filter, 8,5 nm O-III
Baader filter, 8 nm S-II

Exposure times
H-alpha, 9 x 1200 s binned 2x2 
O-III, 4 x 1200 s binned 4x4 = 
S-II,  4 x 1200 s binned 4x4 = 






www.tips-fb.com Posted by J-P Metsavainio at 1:15 PM 0 comments
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Wednesday, December 21, 2016

Dark filaments in Cygnus, project finalized




This winter season I have been shooting some well known and relatively bright objects in Cygnus, My purpose was show them little differently by selecting some less imaged details to show.

This time my target was an area in North America Nebula, NGC 7000. There are some interesting looking formations of dark nebulae.


Dark filaments of Cygnus
Please, click for a large image

Image is in mapped colours, from the emission of ionized elements, R=Sulphur, G=Hydrogen and B=Oxygen. Image spans about two degrees of sky.


B&W image
Please, click for a large image

This photo shows the emission of hydrogen alpha (H-a) alone.


Orientation
Please, click for a large image

Area of interest is marked as a white rectangle.
This wide field photo of the North America and Pelican Nebulae was shot with Canon EF 200 mm f1.8 camera lens, QHY9 astrocam and Baader narrowband filters.

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 x2 and SXV-AOL
Astrodon filter, 5nm H-alpha
Astrodon filter, 3nm O-III
Astrodon filter, 3nm S-II

Exposure times for both image panels
H-alpha, 30 x 1200 s = 10 h
S-II,  6 x 1200 s binned 2x2 = 2 h
O-III,  6 x 1200 s binned 2x2 = 2 h
Total 14 h

A single uncropped, calibrated and stretched 20 min. H-alpha frames used for the mosaic image

Left side of the mosaic image


Right side of the mosaic image


www.tips-fb.com Posted by J-P Metsavainio at 6:26 PM 0 comments
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Monday, December 19, 2016

Filaments of the Veil Nebula in visual spectrum

I have published a mapped color version out of this photo few days ago. This new version shows a detail of Veil Nebula in natural colors. This composition is very close to a real colors. Ionized hydrogen (H-alpha) is emitting red light. Ionized Oxygen (O-III) can be seen as blue hues.

At this Autumn season I have shot several well known targets in constellation Cygnus. 
My purpose was show them little differently by selecting some less imaged details to show.
This new image is a four panel mosaic showing the complex, filament like, structures in Veil Nebula supernova remnant. Original full resolution photo is about 11.000 x 4000 pixels! Total exposure time is around 35 hours. The final photo looks like a giant alien space plant...


Filaments of Veil
Please, click for a large image


Natural color composition from the emission of ionized elements, R=80%Hydrogen+20%Sulfur, G=100%Oxygen and B=85%Oxygen+15%Hydrogen to compensate otherwise missing H-beta emission. This composition is very close to a visual spectrum.


A closeup
Please, click for a large image




A horizontal version
Please, click for a large image




Orientation in Veil Nebula
Please, click for a large image

Area of interest is marked as a white rectangle 
This wide field photo of the Veil Nebula was shot with Canon EF 200 mm f1.8 camera lens, QHY9 astrocam and Baader narrowband filters.

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 x2 and SXV-AOL
Astrodon filter, 5nm H-alpha
Astrodon filter, 3nm O-III
Astrodon filter, 3nm S-II

Exposure times for all three panels
H-alpha, 30 x 1200 s = 10 h
S-II,  24 x 1200 s binned 2x2 = 8 h
O-III,  51 x 1200 s binned 2x2 = 17 h
Total 35 h

Images used for this mosaic





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