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RE: [ccd-newastro] Re: Lenses for Wide field

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  • Wodaski Yahoo
    I took some images with the red filter, and some unfiltered. I don t recall which this was. You can look in the folder where that image is to see the others.
    Message 1 of 5 , Sep 30, 2005
      I took some images with the red filter, and some unfiltered. I don't recall
      which this was. You can look in the folder where that image is to see the
      others. Warning: some of those images are HUGE even as JPGs, 3 to 4 MB!


      Ron Wodaski
      http://www.newastro.com


      -----Original Message-----
      From: ccd-newastro@yahoogroups.com [mailto:ccd-newastro@yahoogroups.com] On
      Behalf Of erdmanpe
      Sent: Friday, September 30, 2005 8:17 PM
      To: ccd-newastro@yahoogroups.com
      Subject: [ccd-newastro] Re: Lenses for Wide field

      Now that's a LOT of stars! Was this filtered? f/#?

      Peter

      --- In ccd-newastro@yahoogroups.com, "Wodaski Yahoo" <yahoo@w...> wrote:
      > There are probably a number of lenses out there, but one that stood
      out to
      > me as a good value is a Nikon ED lens that can be had for <$500
      used. It's
      > the 180mm. Here is an image taken with it on the STL-11000 (60% of full
      > size):
      >
      > http://www.bb-obs.com/img/Nikon180/NA_Pelican_avg3_60.jpg
      >
      >
      > Ron Wodaski
      > http://www.newastro.com
      >
      >
      > -----Original Message-----
      > From: ccd-newastro@yahoogroups.com
      [mailto:ccd-newastro@yahoogroups.com] On
      > Behalf Of Warren
      > Sent: Friday, September 30, 2005 7:38 PM
      > To: ccd-newastro@yahoogroups.com
      > Subject: [ccd-newastro] Lenses for Wide field
      >
      > Hello gents,
      > I'd like to score a couple fine lenses, perhaps used, for
      > a CLA-7 which is available for either Nikon, Canon, Olympus and Pentax
      > bayonet. My chip is only 9x7mm and I'm well fixed at 255mm. I'd like
      > something ~50-80mm and more importantly 135-150mm.
      >
      > I'd gotten Pentax Takumars as they threaded on my SX nosepiece. They
      > seemed to focus sharply at least at center, but the images are soft
      > and with very pronounced red halos despite UV-IR blocking.
      >
      > Obviously manual is fine. Is there much out there with fine ED glass
      > that's not exorbitant and w/o the features we don't need for CCD? Am I
      > wrong- it seems to me that Nikon's 180mm 2.8 is one of the only older
      > items listed as ED? Is Canon's L ED? Do we need to move to modern AF
      > lenses to get the great glass?
      >
      > Thanks so much for your recommendations.
      >
      > Truly,
      > Warren
      >
      >
      >
      >
      >
      >
      >
      >
      >
      > Yahoo! Groups Links
      >
      >
      >
      >
      >
      >
      >
      >
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