Re: Megrez ED triplet APO or Megrez Fluorite Doublet for astrophotography?
- Not really, the Megrez Triplet ED only had a slightly better visual
color correction. I would personally recommend the FD with a field
flattener for astrophotography, or the new M90 or ZS110.
--- In William-Optics@yahoogroups.com, "Dave Harrison - Innivo"
>informative but they actually state that they didn't have any
> Thanks for your reply Timm, I did read that review and it was very
photographic data, just visual, which is what led me to post here.
I've seen the triplet for sale here
http://www.optcorp.com/product.aspx?pid=1-600-613-8151, but maybe
they're out of stock now or it's the last few available. Would the
triplet avoid the field curvature that's present in the doublet?
>Fluorite Doublet for astrophotography?
> ----- Original Message -----
> From: Timm Bottoni
> To: William-Optics@yahoogroups.com
> Sent: Tuesday, August 01, 2006 9:43 PM
> Subject: [William-Optics] Re: Megrez ED triplet APO or Megrez
> I would suggest looking at the Gallery of photos on the WO
> and compare the shots from scope to scope. You can search byproduct,
> or by object, and see what you think.a
> I think you will get pros and cons to both choices, and there are
> number of users here with both scopes, so hopefully one or morewill
> chime in with their opinions.available,
> You might also find this article helpful.
> Keep in mind that currently, the Megrez FD is the only one
> but I'm not sure what WO has planned for the triplet, but thewebsite
> says it's being redesigned, so you might have to wait a fewmonths to
> do a current comparison.can
> The doublet will show some field curvature in the edges, since I
> believe all doublets will, and you can check the shots on the WO
> gallery, or look at my full size versions here ->
> If you are planning on buying a field flattener anyway, then this
> might not be an issue, or if you are cropping the image, then you
> crop out the outer stars that aren't round.advice
> Maybe Scott or one of the others can offer up some additional
> that would help.the
> --- In William-Optics@yahoogroups.com, "innivodave" <dave@> wrote:
> > Hi,
> > I know there have been similar posts, but I can't seem to find
> > anything relating to astrophotography in particular. I am stuck
> > between Megrez ED triplet APO and Megrez Fluorite Doublet. If
> > scope is to be used exclusively for imaging, which one would bea
> > and for what reasons? At the moment I am leaning towards the
> > doublet, I think mainly due to the TMB codesigned lens, but I'm
> > relative newbie to this, so any thoughts are greatlyappreciated.
> > Thanks
> > Dave