Applying a slight tilt to filters?

[Merlin66]

Anyone found a solution to applying a slight tilt (ghost removal) to filters?
I have a 2" filter in a 2" focuser which needs a tilt......
So far I've been "cross threading" the filter and applying some BluTac to hold in in place. Seems to do the job, but doesn't look too safe.
Any better solutions????

[MapleRidge]

Hi Ken...

Could the internal threaded retaining ring in the filter (most have one) be loosened and place something under the filter element on one side so that when you re-tighten the retaining ring the filter sits on an angle? That way the main mounting thread is still properly engaged.

Just thinking out loud

Brian

[marktownley]

Exactly what Brian says, I use 'blu-tack' to impart the tilt in the loosened ring.

[Martin_S]

I'm a bit late to the party but here's my solution. I machined a M42 extension tube so it has a female thread each end, I then cut down to about 80% of the tube, I then insert a flat bladed screwdriver in the slot and open it out slightly to give the required tilt. I mount the tilter to a 2" tube and filter with M42- M48 adaptors. The inside of the tube is lined with non reflective felt. I use a M42 extension tube as it will still give me clearance within the focuser tube if I need a lot of tilt,

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