EP dust cap/plug source?

Discuss telescope eyepieces.
Post Reply
User avatar
Chich
Mars Ambassador
Articles: 0
Posts: 106
Joined: Fri Jul 05, 2019 6:40 am
Location: Vancouver Island, BC
Has thanked: 159 times
Been thanked: 389 times

EP dust cap/plug source?

#1

Post by Chich » Sat Jan 04, 2020 4:00 am

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.
Image
User avatar
Lady Fraktor
Co-Administrator
Articles: 0
Posts: 2556
Joined: Mon Apr 29, 2019 9:14 pm
Location: Slovakia
Has thanked: 5074 times
Been thanked: 3724 times

#2

Post by Lady Fraktor » 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.
Proper Telescopes: Antares 105 f/15, 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: 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
🇸🇰Image
User avatar
notFritzArgelander
Inter-Galactic Ambassador
Articles: 0
Posts: 4686
Joined: Fri May 10, 2019 4:13 pm
Location: Idaho US
Has thanked: 6806 times
Been thanked: 11468 times

TSS Awards Badges

#3

Post by notFritzArgelander » Sat Jan 04, 2020 4:26 am

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: Refractors: Orion ST80, SV ED80 A f7; Newtonians: Z12 f5; Catadioptrics: VMC110L, Intes MK66. 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
User avatar
ARock
Mars Ambassador
Articles: 0
Posts: 134
Joined: Mon May 13, 2019 4:06 am
Location: USA
Has thanked: 249 times
Been thanked: 204 times

#4

Post by ARock » Sun Jan 05, 2020 12:00 am

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

https://www.thingiverse.com/thing:3134224

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.
AR
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.
OleCuss
Co-Administrator
Articles: 0
Posts: 86
Joined: Thu Apr 25, 2019 9:29 am
Has thanked: 71 times
Been thanked: 121 times
Contact:

#5

Post by OleCuss » Sun Jan 05, 2020 11:39 am

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!
Post Reply

Return to “Eyepieces”