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collimation eye piece


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What do you call reasonable price? There’s one on abs here. Sky-Watcher - looks good - note I do not know the seller

https://www.astrobuysell.com/uk/propview.php?view=149598

if you slightly better (sits deeper in draw tube) try one of these - you pays your money and takes your choice....

https://www.firstlightoptics.com/other-collimation-tools/premium-cheshire-collimating-eyepiece.html

Steve 

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31 minutes ago, Anthony1979 said:

arond 25 to 30 pound mark

Well the ABS one might save you a few quid as will the one that John mentions. The FLO one is a bit over your guide price but might be worth a look.

Good luck in your search.

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I think that most of the eyepieces offered by the UK astro retailers are going to be OK.

If you search the FLO site with 'cheshire' you will find a slightly lower cost one on offer.

Have you checked the 'for sale' section on SGL. Or posted a wanted ad?
I vaguely remember seeing a cheshire advertised on here not too long back.
Sorry I did not take much notice as I already have one.

If you choose ebay, be careful to check the seller location.
Goods from China sometimes take weeks to arrive. If there is a problem they do refund - but often buyer pays return postage!
Or there is the argument and delay for a paypal refund.

Good luck searching.

David.

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1 hour ago, John said:

I use a cheapie one that came with a Skywatcher scope years back. It works fine with my 12 inch dob :icon_biggrin:

Mine is rather like this:

https://www.ebay.co.uk/i/173469456518?chn=ps

I use it to check the collimation of refractors as well.

 

I bought one just like that myself, seems to work well enough not that I'm experienced at all, but I do seem to have got the TAL-M collimated well with it earlier today after messing with the mirrors. Also used it to improve the alignment on the little Nat Geo 76/350, both now show nice sharp stars so I figure I must've done somethings right ?

 

Edited by DaveL59
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If it's a new scope then a simple collimation cap is the cheaper way, your scope won't be far out

of collimation, probably the primary mirror will be out, so don't touch the secondary until you have

sorted out the primary, this mirror does move in transit, Flo has a very good one,  I use this one myself.

 

https://www.firstlightoptics.com/other-collimation-tools/rigel-aline-collimation-cap.html

Just line up the donut and you should be good to go, try a star test to make sure but it should be fine.

Clear Sky's.

 

 

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