Dropped my Herschel Wedge

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Bojan
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Dropped my Herschel Wedge

Post by Bojan »

So 2 topics here:

I have this scope:
https://www.teleskop-express.de/shop/pr ... actor.html

That I use for night time and white light. It has a 3.7" focuser which can handle a lot of weight but the clamping system that takes the diagonal is really poorly designed. So much so that it just dropped my 2" Herschel wedge and eyepiece, and that's before I even had the binoviewers on top of that.

Amazingly the herschel wedge "survived" the fall, none of the lenses inside broke, however the ceramic heatsink at the back popped off and seemed to have sheared off the screws with it. Any thoughts about repairing this or should I just get a new one ? (the smudge you see on the lens is where my finger touched it to confirm it's still there, no damage)
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Re: Dropped my Herschel Wedge

Post by DeepSolar64 »

Would a thermal heatsink glue work to put the sink back on the wedge?

https://www.amazon.com/heatsink-glue/s?k=heatsink+glue


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Re: Dropped my Herschel Wedge

Post by Bojan »

DeepSolar64 wrote: Mon May 29, 2023 10:11 pm Would a thermal heatsink glue work to put the sink back on the wedge?

https://www.amazon.com/heatsink-glue/s?k=heatsink+glue
That's a good idea. I do have some two part thermal cement that could work


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Re: Dropped my Herschel Wedge

Post by DeepSolar64 »

Bojan wrote: Mon May 29, 2023 10:16 pm
DeepSolar64 wrote: Mon May 29, 2023 10:11 pm Would a thermal heatsink glue work to put the sink back on the wedge?

https://www.amazon.com/heatsink-glue/s?k=heatsink+glue
That's a good idea. I do have some two part thermal cement that could work

Research it first and make sure it will work. I am not sure how hot the wedge will heat it. It probably depends on the scope's aperture.


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Re: Dropped my Herschel Wedge

Post by Bob Yoesle »

You don't need to replace the wedge.

Extract the sheared off bolts and replace them with new ones. If you can't do this, use a high temperature epoxy and glue the heat sink back in place and you be good to go.

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Re: Dropped my Herschel Wedge

Post by marktownley »

Definitely don't need to replace it. Do you have a screw / bolt extracting tool? Get the sheared bolts out and replace them,


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