Quote:
Originally Posted by Stefan Buda
Thanks Mark, but no Barlow used - on the contrary, I used a focal reducer as this was my 16" planetary Dall-Kirkham that has a prime focus of 6.5m. The Dall-Kirkham configuration has quite bad coma - which is not a problem for planetary imaging - so I designed a focal reducer that also corrects the coma but only has a useful field of about 10mm diameter and gives a focal length of 4m.
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Oh wow! 6.6m at prime. lol. That's long! You should put this on the keyhole in carina and mosaic around eta carina and the finger. Lots of interesting stuff in there. All the Herbig haro objects as well on the other side of the cluster.