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Old Friday 28th March 2014, 11:19   #1
parivel
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FPL 53 , ED Objective Lens

Hi,

I want to make my own Telescope for Bird Photography. Where can I get FPL-53 ED objective lens about 80 mm -100 mm and an Eye piece lens? Thanks in advance.

M.Parivel
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Old Friday 28th March 2014, 12:15   #2
Paul Corfield
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There's one here on ebay and they should ship to India. It's a nice apo triplet lens too. They currently have three available.

http://www.ebay.co.uk/itm/TS-Optics-...d2842#shpCntId

Paul.
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Old Friday 28th March 2014, 13:20   #3
parivel
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Thanks Paul.

OMG... Costlier than the Orion 80ED Telescope itself. I thought I can save some money. :(
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Old Friday 28th March 2014, 13:51   #4
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It's more costly because this is a true apochromatic triplet where as the Orion 80ED is a basic doublet. In that respect the lens isn't so expensive. The scope that normally carries that lens cell would be around another 250 euros.

That lens would normally be found in something like this http://www.teleskop-express.de/shop/...-Crayford.html

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Old Friday 28th March 2014, 14:10   #5
parivel
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Please suggest me some lens used in 80ED... to make my own. thx
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Old Friday 28th March 2014, 18:57   #6
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I’say that your best bet would be to search astronomy forums and classifieds..Astromart is the USA main astronomy marketplace,with a dedicated classifieds page ,and you can find anything really..It is US based but there are members from all over the world..shipping the cell shall not be a fortune anyway,and if you place an add you might get lucky and get an offer from Asia ... there is a fee ,though,to become a member and use the classifieds,but then again,might be worth it..another popular site is Cloudy Nights.I am sure you will find similar sites in India

Last edited by mayoayo : Friday 28th March 2014 at 19:00.
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Old Friday 28th March 2014, 21:13   #7
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I think you will struggle to find the type of lens you are after and then build a scope cheaper than just buying an Orion 80ED. I've had a good look around the web and couldn't turn up anything much. There's plenty of good ED lens cells but they cost a lot.

The only cheap ED one I found is here but it's 70mm and 420mm focal length. You could use it for photography but the focal length would require you to get closer to the subject. It only costs 199 euros

http://www.teleskop-express.de/shop/...ble-mount.html

Paul.

Last edited by Paul Corfield : Friday 28th March 2014 at 21:17.
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Old Friday 28th March 2014, 21:15   #8
Paul Corfield
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Intane Optics used to sell lens cells but their website has much less info now than it did a few years back. Might be worth emailing them just too see if they have anything to sell you. They used to make some cheap scopes using their own lens cells but they seem to be discontinued now.

http://intaneoptics.com/lens-assembly

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Old Saturday 29th March 2014, 05:10   #9
parivel
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Thank you very much Mayoayo, I'll check Atsromart. One of my friend is coming to India soon. Fortunately I can get something.

Thank you Paul. I'll check the links.
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Old Saturday 29th March 2014, 11:49   #10
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Parivel, I searched and searched, and emailed and emailed for exactly what you are looking for. I searched forums, endless optics providers ect. and wasted more time than I care to admit. I found nothing with anywhere near the bang for the buck as the 80ed doublet complete scopes (although there is the barska 80 fpl-51 triplet). If you find something, please let us know, but my advice for a cheap objective lens is finding a used 80 fpl-53 doublet complete scope. I picked up mine for $250 (US dollars). Someday I might buy a TS optics 90mm objective, but for saving money, it really doesn't look like buying the objective is the cheapest route until you are buying something much higher end, and even then it appears to be about a 30% savings and very rare used.

Good luck with whatever you end up finding!

-Richard
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Old Monday 31st March 2014, 09:25   #11
parivel
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Dear Richard,

Thanks a lot. Thanks for your effort and guidance.

Let me save money for the new one or try to find some used 80ED. :)
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