Flattener Distances

[MarkS]

Which are the 2 flatteners?

It's v difficult to compare images unless they are taken under identical circumstances and have the same post-processing, range-scaling etc.  A star that may appear round at first can become quite dagger shaped once you've finished your whole processing sequence.

Mark

[Carole]

Hi Mark,

The one I was using before was one that came with my WO Megrez F6
WO X.08 111

Now I have two skywatchers both F7.5
The new Flattener is
TS 2" Field Flattener - Universal Field Flattening Lens

Carole