Cleaning the 1000mm Reflex-Nikkor

[Edgy01]

Have had my 1000mm Reflex-Nikkor for a number of years.  I have also used my late model 2X telextender on it quite successfully.  But I have noticed that I have some dust which seems to get in easily with this design.

Is there a simple (or relatively simple) way to get inside to clean elements, or the mirrors?  Which lenses or mirrors are the more influential upon imagery quality if dusty?

TIA,

Dan

[dslater]

Just remember, unlike the coatings on lenses, the aluminum coating on the mirrors is extremely fragile and easily scratched. If I were you, I would limit cleaning of the mirror surfaces to nothing more than blown air, or possibly a very soft brush if absolutely necessary.

[Hugh_3170]

Good Advice!

Just remember, unlike the coatings on lenses, the aluminum coating on the mirrors is extremely fragile and easily scratched. If I were you, I would limit cleaning of the mirror surfaces to nothing more than blown air, or possibly a very soft brush if absolutely necessary.

[richardHaw]

http://lenscleanservice.com/index.php?QBlog-20151118-3

too give you an idea

a different lens, but construction should be the same.

have you tried the vacuum cleaner approach?

[Edgy01]

I have not tried any methods yet.  I can see how the design can literally suck dust laden air into the mechanism.  I think I'll have to take the front mirror off to gain access to blow off the surfaces, o to vacuum out the internal workings.

Thanks

Dan

[Netr]

Hello. I have just received a very nice condition Nikkor 1000mm f/11 lens. It came without the focusing handle. 

Does anyone know what thread is used for the focusing handle?  It is clearly less than the 1/4" tripod mount, but i don't have any suitable small bolts to do trial and error with.

Thanks, Ross

[Netr]

Replying to my own question.  A 5/32" bolt will fit roughly, but the thread spacing seems wrong.  A 4mm bolt seems to screw in smoothly, and that is what I will use.

These old lenses take on a new lease of life with the ability to use focus peaking and the simplicity of increasing the contrast, either at the time of capture or in post-processing. Still needs a tripod.

[paul hofseth]

I would be extremely careful not to dislodge are anything in a catadioptric lens; since the light path is folded 3 times tolerances   must be 3 times more carefully observed

p.