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.
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