Celestron f6.3 reducer

[Coco]

I have a Celestron f6.3 reducer that had annoying dust in between the centre lenses. A simple job I thought to clean it so I took it apart carefully.

During the operation I was called away from my bench in the garage to bath the kids when i returned I couldn't remember the lens configuration

There are 2 groups of lenses consisting of 2 bonded lenses., I can work one out because the diagonal has made a micro faint 1.25" mark on the surface (WARNING :- dont fit a diagonal to a Celestron f6.3 reducer)

So one lens is definitely in correctly

The lens groups consist of one fat & one thin bonded together, there is also a spacer between the 2 groups.

From the camera / imager side (fat/thin) spacer (fat/thin)

or

From the camera / imager side (fat/thin) spacer (thin/fat)

Can anyone please help

Cheers

Guy..

[Merlin66]

Hmmm ........Hard to tell without pulling it apart, but the front surface of the front lens seems to be almost flat ( ie the surface which faces the telescope)

Hope this helps....

[Coco]

Hmmm ........Hard to tell without pulling it apart, but the front surface of the front lens seems to be almost flat ( ie the surface which faces the telescope)

Hope this helps....

What about the rear surface ....

Guy...

[Merlin66]

The rear outside surface ( facing the camera/ CCD) appears to have a very slight convex surface, not as flat as the front but still not highly curved.....

Hope this helps.