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Thursday, December 8, 2016

Pelican Nebula, a two frame mosaic


At November 30 I published a new photo about dark filaments between North America and Pelican Nebula. Later I found out, that my shot was overlapping with my older photo of the Pelican nebula. This image is combination out of those two images. 

Pelican Nebula
Please, click for a large image

Image is in mapped colours, from the emission of ionized elements, R=Sulphur, G=Hydrogen and B=Oxygen


Technical details

Can be found HERE, for the upper part of the image
And HERE, for the lower part of the mosaic image above





Wednesday, November 30, 2016

A detail photo of the dark filaments in Pelican nebula



I have shot lights for this image back in October 5 but found time to process them just now.
The complex cloud of dust and gas locates in front of the ionized gas clouds. Ionized gas, mainly oxygen in this photo, is emitting light and due to that we are able to see the dark formation,


Dark clouds in Cygnus
Click for a large image

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



An experimental starless version
Please, click for a large image

The actual gas formations stand out well in this starless version.



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 all three panels
H-alpha, 6 x 1200 s = 2 h
S-II,  6 x 1200 s binned 2x2 = 2 h
O-III information is taken from an older the wide field shot seen above, ~2 h 
Total 6 h



Tuesday, November 29, 2016

A little different view to the North America nebula, part III


This photo is result from my mosaic project for this Autumn season. My purpose was to image the North America Nebula, NGC 7000, and show it little differently, than usually. This object is a popular target among astro photographers, I found some rarely imaged areas and made my composition out of them. There are three panels used for this mosaic, total exposure time for all three emission line is around 16 hours.


A detail from the North America nebula as a three panel mosaic
Please, click for a large image

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



An experimental starless version
Please, click for a large image

The actual gas formations stand out well in this starless version.



Image in natural colors
Please, click for a large image

Image is in Natural colour palette from the emission of ionized elements, 
R=Hydrogen + Sulphur, G=Oxygen and B=Oxygen + ~10% Hydrogen.




Couple of individual image panels
Please, click for a large image









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 all three panels
H-alpha, 18 x 1200 s = 6 h
O-III, 18 x 1200 s binned 2x2 = 5 h 
S-II,  18 x 1200 s binned 2x2 = 5 h 
Total 16 h


Thursday, November 24, 2016

Filaments of the Veil Nebula in natural colors



This is a new version of the Filaments of Veil photo. It shows the nebula complex in visual spectrum. Most strong emission line is hydrogen alpha, H-a, it can be seen as a red color. Blue hues are from an ionized oxygen, O-III.

My latest image is a composition of  exposures from several nights, months and years. Couple of weeks ago, when we had some clear night last time, I took couple of shots from Veil Nebula. This time my purpose was to show some rarely imaged details and structures in this complex ball of expanding gas, leftovers from a massive explosion, the supernova.
I combined this new material to my older images of the area. Total exposure time for this five panel mosaic is around 37 h.

Filaments of the Veil in natural colors
Please, click for a full size image


Image is in Natural color palette from the emission of ionized elements, 
R=Hydrogen + Sulfur, G=Oxygen and B=Oxygen + Hydrogen.


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

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

New material from this Autumn season, total exposure time 15 h

H-alpha, 15 x 1200s = 5h
O-III, 15 x 1200s binned = 5h
S-II, 15 x 1200s binned = 5h

Older material used for this mosaic image