Re: Field Flattener/Focal Reducer for the ZS 66 Doublet apo
- If I ever get a clear night here, I'll be trying the TV 2008 on one,
but it'll be on smaller CCDs.
--- In William-Optics@yahoogroups.com, "Rick Meinig" <meinig@a...> wrote:
> Per the WO tech support, the WO .8X reducer/flattener is not
> compatible with the ZS Doublet apo. Does anyone have any
> reccomendations? Has anyone tried the TeleVue .8X reducer/flattener. I
> seem to have a fair amount of off axis oblong stars when doing prime
> photography with a canon 10d and a 1-1/4 nosepiece. I can post a
> picture to the photo section of a stack of 37X2min of M42or even a
> single 2 min pic for that matter to give a better idea. Visually it
> seems that the star test is decent so I don't know where this is
> coming from...I don't know if this inherent with this scope,
> collimation issue, or the doublet itself...
> Rick Meinig