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ASTRO: M-26, Open Star Cluster in Scutum
There's still a good handful of Messier Objects that we don't have images of
on the Kopernik Observatory website. They are mostly the ones that don't fit well on a CCD chip with the 20-inch RC Cass because they cover too large a patch of sky. Also, there's a number of them taken with the old ST-6 CCD thru our Brandon 80mm APO refractor (finder on the 20) that need updates with a more modern camera. However M-26 does fit on the STL chip with the 20-inch focal reduced to around F/5. The field of view is about 20x25 arc minutes with a image scale of 1.2 arc-secs/pixel. This was a very short RGB image that I took back in early September. M-26 is one of those objects forgotten because of its more famous neighbors - in this case the magnificent M-11. When searching around the web for other images I did find that M-26 was used as a recent target to test the new adaptive optics system on the Hale 200-inch. Cal Tech lists the distance as 5,200 light years on their web page showing this image. For more info on M-26, see: http://www.kopernik.org/images/archive/m26.htm Clear skies, George Normandin |
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ASTRO: M-26, Open Star Cluster in Scutum
Nice one George. Another object I have not imaged yet.
Stefan "George Normandin" schrieb im Newsbeitrag ... There's still a good handful of Messier Objects that we don't have images of on the Kopernik Observatory website. They are mostly the ones that don't fit well on a CCD chip with the 20-inch RC Cass because they cover too large a patch of sky. Also, there's a number of them taken with the old ST-6 CCD thru our Brandon 80mm APO refractor (finder on the 20) that need updates with a more modern camera. However M-26 does fit on the STL chip with the 20-inch focal reduced to around F/5. The field of view is about 20x25 arc minutes with a image scale of 1.2 arc-secs/pixel. This was a very short RGB image that I took back in early September. M-26 is one of those objects forgotten because of its more famous neighbors - in this case the magnificent M-11. When searching around the web for other images I did find that M-26 was used as a recent target to test the new adaptive optics system on the Hale 200-inch. Cal Tech lists the distance as 5,200 light years on their web page showing this image. For more info on M-26, see: http://www.kopernik.org/images/archive/m26.htm Clear skies, George Normandin |
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ASTRO: M-26, Open Star Cluster in Scutum
"Stefan Lilge" wrote .... Nice one George. Another object I have not imaged yet. Thanks Stefan! You'll have to wait for next year for this one! George N |
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