Sunday, March 1, 2009
Two ways to end a life in HST-palette
In this rare image two Stars has ended they lifes. Right one is an old, very dim and large, Planetary Nebula and the Left one is an extremely dim Supernova remnant.
The North is Up and the field of view is about 5,5 degrees horizontaly.
I have seen very few images of eather of them, and never seen it as a three colour narrow band.
Objects in the image are from the Sharples Catalog.
Upper one is Sh2-216 and the lower one Sh2-221.
There is other smaler Sh2-objects there, Sh2-217 and Sh2-219,
they are located in Auriga.
Natural color composition, mixed from H-a, O-III and S-II channels.
Since I haven't seen this ever in NB colors, I added an image about content of the channels.
A special technique is used to dig out a very faint information.
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IMAGING DATA:
Camera, QHY9
Optics, Canon EF 200mm f1.8 @ f1.8
Guiding, QHY5 + PHD-guiding
Platform, Meade LX200 GPS 12"
Exposures:
H-a = 9x1200s
S-II = 14x300s binned 3x3
O-III = 11x300s binned 3x3
If someone elese has observed this older, double ionized Sulfur, outburst,
please inform me.
Thursday, February 26, 2009
Cone and Rosette Nebula mosaic!
Cone and Rosette in HST-palette. Image spans horizontally 10 degrees.
Same image with reduced stars to show the nebulosity better.
Area in "natural" colors. Mixed from narrowband data; Red=70%H-a + 30%S-II, Green=100%=-III and Blue=85%O-III+15%H-a - -
Area in "natural" colors. Mixed from narrowband data; Red=70%H-a + 30%S-II, Green=100%=-III and Blue=85%O-III+15%H-a - -
At night of 24.02. I shot this data before a Comet Lulin in previous post. I allway wanted to show this interesting area between Rosette and Cone. As can be seen in the image, they both are part of same large nebula complex.
A horizontal versions Are for your viewing pleasure. Here is a real postion in the Sky, North up. 
This area is sometimes called as a "Christmas Tree Cluster". Now I can see why! With current equipments I can have both, highresolution and wide field. - - IMAGING DATA: Camera QHY9 Guiding QHY5 Optics Canon EF 200mm f1.8 lens Platform LX200 GPS 12" - Exposures for Cone Nebula part: H-a = 2 x 1200s S-II = 2 x 600s O-II = 2 x 600s - Exposures for Rosette Nebula part: H-a = 3 x 1200s S-II = 2 x 600s O-III = 2 x 600s - Final image is 7000 x 2500 pixels and the resolution is 5,5 pixels/arc second
This area is sometimes called as a "Christmas Tree Cluster". Now I can see why! With current equipments I can have both, highresolution and wide field. - - IMAGING DATA: Camera QHY9 Guiding QHY5 Optics Canon EF 200mm f1.8 lens Platform LX200 GPS 12" - Exposures for Cone Nebula part: H-a = 2 x 1200s S-II = 2 x 600s O-II = 2 x 600s - Exposures for Rosette Nebula part: H-a = 3 x 1200s S-II = 2 x 600s O-III = 2 x 600s - Final image is 7000 x 2500 pixels and the resolution is 5,5 pixels/arc second 
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