Saturday, March 28, 2009
Sh2-223, 224 and 225
In HST-palette 
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This was the moust difficult target.
The image spans about five degrees horizontaly, there is two
old Supernova remnants in the same field of view!
Extremely low surfage brightness and large angular size makes
this trio from the Sharpless catalog a very challenging to shoot.
There is a very dense Star field. Note. the "noise" in the image is
not a noise but Stars!
I think, this is more difficult than a SH2-240.
It can be seen in my older post, here:
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I spend three nights for H-alpha and here is the result.
I think, this must be the firs NB color composition from this target?
Least I wasn't able to find any.
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Total exposure time for H-alpha channe is 11h.
Taken with very fast optical configuration @ f1.8.
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Details;
-Camera, QHY9
- Optics, Canon EF 200mm f1.8 @ 1.8
- Guiding, QHY5 and PHD-guiding
- Platform, LX200 GPS 12"
- Exposures, 7x1200s with 7nm H-alpha filter and 13x2400s, 5x300s O-III Binned 4x4 and 5x300s. S-IIBinned 4x4 . Darks, Flats and Bias frames calibrated.
Total exposure time for H-alpha line is 11h!
Friday, March 27, 2009
NGC4565
An other funny Galaxy shot from the night of 23.03.
This wide field precentation, with Canon EF 200mm f1.8 @1.8, shows lots
of Space around the NGC4565.
Waste of space?
Maybe, but I think this composition gives a feel about the dimensions of the Space.
The field of view is about five degrees wide.
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Same equipments, than in previous post.
Exposures 7x150s. -
here is my previous image of the same galaxy, taken with a longer FL instrument.
Leo Trio
Image labeled with MaximDL planetarium
A grop from the center of the image.Not a bad resolution for a 200mm lens.
A Blink animation to show just Galxies.
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I shot this one 23.03 for optical configuration calibration purposes.
The 200mm les is not a right tool for tiny glaxies, this is a sharp one though.
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Image turned to be kind of nice, so I post it here.
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A Blink animation to show just Galxies.(Klick the image to see it.)
If could see this area from outside of our home Galaxy, it'll looks like a Starless one.
All the faint dots in the supressed image, are the other Galaxies!
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Details;
-Camera, QHY9
- Optics, Canon EF 200mm f1.8 @ 1.8
- Guiding, QHY5 and PHD-guiding
- Platform, LX200 GPS 12"
- Exposures, 17x150s with IDAS-LP filter,
Darks, Flats and Bias frames calibrated.
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