Sunday, January 25, 2009
IC443, a start of the new project
False color Hydrogen alpha
H-a
H-a, stars are supressed to show the nebulosity.
H-a
H-a, stars are supressed to show the nebulosity.-
-
IC443 is a supernova remnant in Gemini.
Last night I installed a Tokina 300mm AT f2.8 lens front of the QHY9 astro camera.
This combination gives me resolution of 3,5 "/pixel, witch mean practically seeing limited
details. The fiels of view is about 207' x 157'.
-
At the time I was able to shot this target it was low in the sky, about
30 degrees, that and very bad transparency and seeing cut down the sharpness a lot.
-
I will shot more Ha-light when weather allows and I'm going to
add O-III and S-II data as well to create a narrowband composition.
-
Imaging details:
Optics, Tokina 300mm AT f2.8 @ 2.8
Camera, QHY9 astro camera
Guiding, QHY5 and PHD-Guiding on LX200 GPS 12"
Exposures, 8x600s +darks, bias and flats
Filter, Baader 7nm H-alpha
Thursday, January 22, 2009
Rosette Nebula as a Stereo pair.
I turned this image of Rosette Nebula to a Stereo pair format by
adding some volume.
The result is more or less an educational guess about real 3D appearance of this formation.
-
Two versions, first for Parallel Vision , and the second for Cross Vision method.
-
The original image and the image information can be found here:
-
Viewing instructions, please, look for the Right hand side menu.
Saturday, January 17, 2009
Sh2-240, more lights
This is a second version of Sh-240 this year.
I added more H-a light. Now image is smooth and signal / noise is
improved. I might shoot more lights for this later in this spring.
-
Two versions, first in Hubble palette and secon in "natural" color narrowband composoite.
-
Exposures so far are:
H-alpha, 12x600s + 24x300s(binned 2x2) + 12x600s = 6h
S-II, 5x600s (binned 2x2)
O-III, 14x300s (binned 3x3)
-
Optics: Canon 200mm EF f1.8 @ f1.8 Camera: QHY9 @ -50 C Guiding: Lx200 GPS 12" + LQHY5 and PHD-Guiding - The information in O-III channel is extremely weak. I used a special technique of mine to dig it out for color information. This image serie shows how weak the O-III realy is.
Thursday, January 15, 2009
Sh2-240, a Supernova remnant. (Simeis 147)
I have never seen this object in HST narrowband colors.
After strucling with this last night, I don't wonder why.
This is a extremely difficult objekt it has a super low surface brightness and
it's huge!
This is a supernova remant in Taurus & Auriga
it has the angular diameter of 200'x180'.
Thats about 8 full Moon!
-
There was very litle data on O-III channel.
With extreme stretching and by using the method I have developed for narrowband work, some O-III glow can be clearly be seen deep down in data.
-
Total exposure time was relatively short doe the very fasr f1.8 optics.
-
Exposures:
-H-alpha 12x600s binned 1x1+ 24x300s binned 2x2, total 4h
-S-II 5x600s binned 2x2
-O-III 14x300s binned 3x3
Optics:
Canon 200mm EF f1.8 @ f1.8
Camera:
QHY9 @ -50 C
Guiding:
Lx200 GPS 12" + LQHY5 and PHD-Guiding
-
The information in O-III channel is extremely weak.
I used a special technique of mine to dig it out for color information.
This image serie shows how weak the O-III realy is.
Here is a Starless version to better show the nebulosity.
-
I keep coming back to this fascinating object, there is something mysterious
about its appearance and the fact, that it's difficult to shoot makes it even more interesting.
-
Here is some elaier tryouts with Sh2-240:
Subscribe to:
Posts (Atom)
