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Monday, March 24, 2014

A collection of large supernova remnants as a poster



Since I don't have any equipment to continue my imaging work, I have organized my image archives. This time I made an image collection out of the supernova remnants with a large angular scale. I'm trying to show here, how large they really are in the sky. There is an image of the Moon as a scale in the poster. The Moon has an angular diameter of about 30 arc minutes, that's equal to 0,5 degrees.


A collection of large supernova remnants as a poster
Images are in mapped colors from the emission of ionized elements. NOTE a large image, 1900x2500 pixels and 6MB

All images are in Mapped colors from the emission of ionized elements,
R=Sulfur, G=Hydrogen and B=Oxygen.
Note. The Moon as a scale to show the apparent scale in the sky.


The same collection in visual spectrum
Click for a full resolution poster. NOTE a large image, 1900x2500 pixels and 6MB

Images are in Natural color palette from the emission of ionized elements,
R=Hydrogen + Sulfur, G=Oxygen and B=Oxygen + Hydrogen. This is very close to a visual colors.
Note. The Moon as a scale to show the apparent scale in the sky.

More information about SNR images above
Links to my original photos with technical details

All the images are shot with the camera optics, Canon EF 200mm f1.8 monster lens full open, Baader narrowband filters (H-a, O-III and S-II) and the QHY9, a cooled astronomical camera with the KAF 8300 CCD chip. Very long exposure times are used, 15 to 50 hours per image, to reveal dim and diffused structures buried in the dense star fields. All images are guided with the Meade LX200 GPS 12" and the Lodestar guider. Meade works also an imaging platform for the camera lens.

In this collection, there are couple of very rare images, like Simeis 147, Sharpless 224. There are also two "firs light" images out of two super nova remnants, Sharpless 221(Sh2-221) and G65.3+5.7SNR. I haven't been able to find any other color images out of them, showing the whole SNR.





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