EP dust cap/plug source?

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EP dust cap/plug source?


Post by Chich »

Is there a reasonable source for these? I just had a look on Amazon and they are asking upwards of $40 for a set of ten 1.25" caps or 4 2" plugs. At these prices it would almost worthwhile to haunt the SallyAnn and buy up old binos for their caps if they'd fit.

I would imagine that there is a viable substitute lurking in the aisles of a hardware shop, industrial supply or sumsuch. I just have not been able to find one.

Thanks for any thoughts.
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Lady Fraktor
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Re: EP dust cap/plug source?


Post by Lady Fraktor »

https://agenaastro.com/catalogsearch/re ... ust%20caps

But being in Canada I would email All-Star in Alberta, KW (Perceptor) in Ontario or Ontario Telescopes they may be cheaper.
Proper Telescopes: Antares 105 f/15, Bresser 102 f/13.2, Celestron 150 f/8, Stellarvue NHNGDX 80 f/6.9, TAL 100RS f/10, TS 102 f/11, UR 70 f/10, Vixen ED115s f/7.7
Mounts: Berlebach Planet w/ pier, Celestron AS-GT, Celestron CG-5 w/ Argo Navis & tracking motor, SLT w/ pier & tripod mods, Manfrotto 028b w/ SV M2C, Mantrotto 055Pro w/ 128RC, TAL MT1C, Vixen SXP w/ HAL-130 & half pier
Diagonal: 2" A-P Maxbright, 2" Baader Herschel Wedge (P), 2" Zeiss/ Baader Amici Prism (DX2), 2" Orion Amici Prism, 2" Stellarvue DX, 2" TeleVue EverBrite
Eyepieces: Antares to Zeiss
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Re: EP dust cap/plug source?


Post by notFritzArgelander »

Lady Fraktor wrote:
Sat Jan 04, 2020 4:03 am
https://agenaastro.com/catalogsearch/re ... ust%20caps

But being in Canada I would email All-Star in Alberta, KW (Perceptor) in Ontario or Ontario Telescopes they may be cheaper.
Yup. Agena is my prime source of such things.... Exchange rate problems might be an issue.
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker III, Vixen Porta II, Celestron CG5, Orion Sirius EQG
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Re: EP dust cap/plug source?


Post by ARock »

Ebay is also a good source, but I prefer Agena as they mention the outer diameter which is important for the eye side cap of the eyepiece which is not 1.25" or 2" depending on the eyepiece.
https://agenaastro.com/agena-plastic-en ... ellow.html

Lately 3D printable eyepiece caps have been showing up on thingiverse where you can just download and print when needed, especially if your neighborhood public library has a 3D printer for public use. Some of them are customizable, ie come with a cad file as well


The one above has a scad file which you can open up in openscad (free) and edit some numbers to fit your particular eyepiece, generate a stl file and take it to a 3D printer . I have not tried this yet, but plan to, the next time I need a cap which has a non standard size.
Scopes: Zhumell Z8, Meade Adventure 80mm, Bushnell 1300x100 Goto Mak.
Mount: ES EXOS Nano EQ Mount, DIY Arduino+Stepper RA drive.
AP: 50mm guidescope, AR0130 based guidecam, Canon T3i, UHC filter.
EPs: ES82 18,11,6.7mm, Zhumell 30,9mm FJ Ortho 9mm, assorted plossls, Meade 2x S-F Barlow, DGM NPB filter.
Binos: Celestron Skymaster 15x70 (Albott tripod/monopod), Nikon Naturalist 7x35.
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Re: EP dust cap/plug source?


Post by OleCuss »

You can get quite a collection here: https://eyepiececaps.com/

For items I could not get through them or other sources I've at least once gone to McMaster-Carr and gotten a silicone cap there. Never underestimate McMaster-Carr!
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