Quote:
Originally Posted by Doomsayer
A great field for sure Greg. I've been wondering how the 16803 was going. The Vela SNR often seems to have poor chart coverage. The Uranometria V2 atlas is pretty good but it generally just maps the GUM nebs. Hard to beat the UK schmidt plates if you are old school.
Maybe a few deep frames with a good camera lens (Hasselblad?) might solve the problem for tracking its extent.
I'm looking forward to going deep in this area as well with a 'wide' lens. I have a Nikon & Hasselblad adapter for the PL11002M ready to go (I have a collection of old 'Blad gear, still used occasionally). This combo would vignette the 16803 a fair bit because of the Nikon small throat but it might be possible to get a custom adapter.
guy
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Thanks Guy.
I have used a Canon 200mm F2.8 to image this area with an STL11. Also a Canon 85mm and a Nikon 50mm.
I got some coma when the aperture was wide open but if you stop down 2 stops it reduces a lot to acceptable levels.
I imagine whatever works with the 11002 would work with the 16803 as it is basically a squared off 11002.
Greg.
Quote:
Originally Posted by strongmanmike
Yes I think the ProLine16803 is going to be a great camera - I am reluctant to sing the praises of anything now before I actually use it ala the ASA  ..of course I have used the ProLine platform already so I guess I have a good idea of just how good it should be  . The 16803 chips in the ProLines are returning read noise levels of less than 6 electrons, pretty amazing huh?..Hope mine does too  I remember Wolfgang Promper felt he nearly didn't need dark frames! I was aware that the super cooling levels I get with the 11002 chip in the ProLine will be unobtainable with the bigger 16803 but any delta T greater than 50C will be acceptable then I should be able to run at -25C in summer and -35C in winter (two dark sets instead of the only one I use now  )
Mike |
Yes don't count your pixels before they are exposed!
Greg.
Quote:
Originally Posted by DavidU
Very nice Sir Greg ! I can't wait for the Sidonio with 2x2 binned Ha.
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I think also sum combine isn't the best as it leaves too many little artifacts like cosmic rays for which these sensitive cameras seem to always get several.
greg.