EP rattles

[matt]

Evening all:)

One of my eyepieces has a noticeable rattle when I gently shake it.

It's definitely in the lenses somewhere.

I this a problem of any significance?

[janoskiss]

What kind of eyepiece is it?

[frogman]

my 30 mm 1RPD does the same
anyone ?

[matt]

frogman...

I'm sure I'm not the first to say that "2 wrongs don't make a right":confuse3:

I'm sure there are plenty of folk out there who've been sold rattly EPs ...

but does that mean they're OK?

[frogman]

i havent had an issue with it other than the NEED to hear it rattle when i pick it up ! :)

[Rodstar]

I don't know guys, but last night I had more than a rattle in one of my eyepieces...somehow a mosquito snuck in the back of my 13mm Nag as I was putting it to the diagonal, and so when then took a peek at the moon, boy did I get one hell of a shock!

I'm sure the neighbours heard a loud "F@%$" ...this was at about 11.30pm.

[matt]

:lol: :lol: :lol: :lol: roflolpmp

You must have thought you were getting a sneak preview of the new Harry Potter movie!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[ballaratdragons]

A broken one! :lol:

[janoskiss]

Rattle is not good unless it's just the barrel coming loose, which you can retighten. The optics should be fixed in place and well collimated, with all lenses aligned along the optical axis. A rattling lens will not do much good for the view through the EP. If it's not the barrel that would only need a slight turn, then ask the the dealer you bought it from to replace it.

[ballaratdragons]

Also check the threaded lock ring up inside the barrel. Just re-tighten it if it is the slightest bit loose.

The lock ring holds the Lense in place.

[RAJAH235]

FWIW, if you have a loose locking ring, go to a Jewellery store. Ask nicely if you can borrow the 'adjustable tool for removing watch backs'. (Not sure of terminology).
Remove the chrome barrel to gain access to the ring. Just *NIP* it up.
Did this when I had to replace a UHC filter holder. :D L.

[rochler]

2 wrongs don't make a right, but 3 lefts do hehe....:nerd:

[matt]

Thanks lads

You were right. After removing the barrel I discovered a loose locking ring.

SORTED!!!!!!!!!

[asimov]

Cool! Glad it was sorted out easy.

[ballaratdragons]

Nah. it's OK Matt. Just send the Nagler in a hurry!!!
:lol2:

[asimov]

Ken would'nt accept such a gift anyway Matt, he has too much pride! But I don't!! I'll PM you my particulars! :nerd:

Besides, he's a toUcammer now! No further use for eyepieces! :P

[ballaratdragons]

:lol: Matt is going to have a heart attack when he reads the above posts! :lol:

[asimov]

Sorry bout the spamming in your thread Matt!......it won't happen again! (he-he-he!) ;)

[ballaratdragons]

So are you John, you . . . you . . Toucammer!

[RAJAH235]

We're gonna have to get you a slower 'pooter', Ken. Much too quick with the qoute, 'quotes'! :P :D L.
ps. Matt, glad 'we' :whistle:could all help.

[ballaratdragons]

Hehehe! Not fast enough Laurie! I need me a really quick pooter so's I can gets me posts in quicker! I wanna be quicker than a Prairie Dog that sat himself on one of them thar cactus thingies :lol:

Why am I talking like a Hillbilly? :scared:

[asimov]

'Cos it makes a nice change from talking like a pirate Ken.

[RAJAH235]

You'll just have to take a 'speed' typing course, Ken. :P :P :D L.
ps. AAhhhhhhrrrr lads..

[ballaratdragons]

Ya darn tootin' John! Them thar pirates is scary critters an all! Look out, one of them cahootin Pirates just snucked in agin.

It's Captain Rajahbeard! :scared:

[matt]

Hullo hullo!

What's going on here, then?:scared:

Ken, you are one frightening post-altering dude.

A free Nagler?:lol: :lol: :lol:

[Blue Skies]

Well I was waiting for someone to say "But some eyepieces should rattle" so I had better say it. It can be a sign that the glass is relaxed and being the shape it should. If you over-tighten all the locking rings and spacers inside the ep you can stress the lenses and then it wont work as good as before.
Some of the Meade wide field eps should rattle - I had a friend who took his apart to find our what might be wrong with it :scared: only to put it back together and find the rattle still there.

[ballaratdragons]

Some things just don't sound right, but often there is an explanation forthcoming.

Again we have learnt something new! Thank you Bluey.

[janoskiss]

Sorry but I do not believe a word you are saying, Blue Skies (even if you do).
Quality EP with glass elements made to rattle? No way, thanks.
:P
Good explanation though. ;)