Eye piece help!

[Clair]

Hi, we had the infinity 76 as a Christmas present, the eye piece has fallen apart ..... can anyone describe how to put it back together. Someone else had this problem but the link to the suggested help no longer works.... any help gratefully appreciated! 

[DaveL59]

Hi Clair

might be worth posting a pic of the eyepiece to give us a clue  

You can hopefully reassemble but if can be a bit fiddly getting the small lenses into the body and staying the right way up en route, worth giving each a clean with lens cleaner and avoid handling with fingers as you add each back in if poss too. 

[DaveL59]

also found this forum thread which might help. I'm not registered there so can't actually access it but you may be able to without registering...

http://www.astronomyforum.net/skywatcher-telescopes-forum/173647-skywatcher-infinity-76p-300-eyepiece-come-apart-help-please.html

[John]

This might help:

 

 

[DaveL59]

in this thread one was dismantled to remove the prisms, is this what yours now looks like now?

 

 

[Louis D]

Since it uses an erecting eyepiece, perhaps this Celestron reassembly page might help.

A person on Cloudy Nights disassembled and optimized his Celestron erecting eyepiece in this thread.  Perhaps it might help guide you as well.

[Clair]

Luckily the prisms haven’t come out..... it was just the lenses when I took the lense cover off. We can’t see anything out of the lense so I think I I have put the lenses back in the wrong way ....

 

[Clair]

Which way up should the lenses be?

[DaveL59]

the second link (cloudynights) shows the order the lenses go in if you scroll down just under halfway.

The double (thicker) in first then the spacer and then the thinner single at the top of the tube. More curved sides facing each other when fitted up into the tube.

Handy that the prisms are still in place as that'd be more fiddly and they can be easily chipped so looks like hopefully a simple refit task  

Edited December 30, 2019 by DaveL59

[joe aguiar]

If those are hygens 1.25" ep I would just upgrade them. 

They are the cheapest ep back when I worked in a telescope retail real store the dealer cost of those h20 f12.5 and sr4mm 1.25" were $2.50 and that's Canadian. So UK that's probably $1.75 each ep.

So consider how much it took to make it maybe 50 cents.

I dont wanna be the bearer of bad news but just get a plossls or super  plossls ep that will change the scope much better.

Joejaguar 

 

[DaveL59]

except that for the infinity the channel in the barrel is for focusing the EP by rotating the EP itself...

You'd have to modify the holder to use regular EP's which apparently can be done, but perhaps not for a beginner

[joe aguiar]

ok yes i remnember that it was a circular grove into the ep and thats how you focuser the ep. i just remebered that when u said it

joejaguar

Edited December 31, 2019 by joe aguiar

[Louis D]

Yes, good call @DaveL59, there is a picture in post #4 showing the order.  I've inserted it in this thread below:

Hopefully, it's the same design as the OP's eyepiece.