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Embouts et brides

End caps and flanges are the least glamorous parts in a telescope and among the most consequential. A flange determines whether a third-party focuser will bolt to your tube at all, and a proper end cap is what keeps dust, moisture and insects out of an optical path that is difficult to clean. David Astro carries end caps and flanges in Canada, covering drawtube terminations, telescope-specific mounting plates and dust protection, held in our Canadian warehouse.

Fit here is exact rather than approximate. Send us your telescope model and focuser and we will identify the correct flange rather than leaving you to measure a bolt circle.

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Starlight Instruments Adaptateur 2.0" pour télescopes RC Astro-Tech 10, 12 et 16" et GSO 10/12/16"

Permet de monter un porte-oculaire Feather Touch 2.0" Conçu pour les télescopes RC Astro-Tech 10", 12" et 16" Conçu pour les télescopes RC GSO 10"...

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Starlight Instruments Adaptateur 2.0" pour télescopes RC Astro-Tech 6", 8" et GSO 6", 8", WO Megrez 80/90mm récents et WO GT81

Relie un porte-oculaire Feather Touch Starlight Instruments 2.0" à votre télescope Conçu pour les télescopes Ritchey-Chrétien Astro-Tech et GSO de...

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Starlight Instruments Adaptateur 2.0" pour télescopes Astro-Tech 65mm

Relie les porte-oculaires Starlight Instruments 2.0" aux télescopes Astro-Tech 65mm Garantit un montage rigide à filetage direct pour l'astrophoto...

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Starlight Instruments Adaptateur 2.0" pour télescopes Astro-Tech 72mm et William Optics 72mm

Permet de monter un porte-oculaire Starlight Instruments 2.0" Conçu pour les lunettes Astro-Tech 72mm Conçu pour les lunettes William Optics 72mm ...

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Starlight Instruments Adaptateur 2.0" pour Borg M57

Relie les porte-oculaires Starlight Instruments 2.0" aux télescopes Borg Filetage côté télescope : Borg M57 Filetage côté porte-oculaire : 69mm x ...

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Starlight Instruments Adaptateur 2.0" pour télescopes Brandon

Adapte les télescopes Brandon aux accessoires 2.0" Filetage côté télescope : 71x1mm À utiliser avec le porte-oculaire Feather Touch FTF2025BCR Usi...

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Starlight Instruments Adaptateur 2.0" pour télescopes SCT Celestron & Meade montés sur fourche

Permet de monter des porte-oculaires Feather Touch 2.0" Convient notamment aux Celestron C/CPC8, C/CPC9.25 et Meade 8" RCX400, LX90, LX200 Se fixe...

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Starlight Instruments Adaptateur 2.0" pour télescopes SCT Celestron & Meade à petit filetage

Relie les porte-oculaires Starlight Instruments FTF2015BCR à certains SCT S'adapte aux modèles Celestron 8", CPC 800, 9.25" et CPC 9.25 S'adapte a...

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Starlight Instruments Adaptateur 2.0" pour télescopes SCT Celestron C11 /C14

Adapte les porte-oculaires Feather Touch 2.0" aux SCT Celestron grand format Se visse sur la cellule arrière 3.29"-16TPI des tubes optiques C11 et...

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Starlight Instruments Adaptateur 2.0" pour télescopes SCT Celestron C11/ C14

Relie les porte-oculaires Feather Touch 2.0" à certains SCT Celestron Se visse sur le grand adaptateur visuel 3.29-16 Compatible avec les modèles ...

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Starlight Instruments Adaptateur 2.0" pour télescope Celestron C70

Adapte les lunettes Celestron C70 pour accepter des porte-oculaires 2.0" Permet d'utiliser les porte-oculaires Feather Touch Starlight Instruments...

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Starlight Instruments Adaptateur 2.0" pour télescope Celestron 102mm

Adapte les télescopes Celestron 102mm Accepte les porte-oculaires Feather Touch Starlight Instruments 2.0" Permet une mise au point de précision p...

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Starlight Instruments Adaptateur 2.0" pour ES Comet Hunter

Permet de monter un porte-oculaire Feather Touch 2.0" Conçu pour l'Explore Scientific Comet Hunter À utiliser avec le porte-oculaire Feather Touch...

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Starlight Instruments Adaptateur 2.0" pour Newton GSO Carbon Truss

Permet l'installation de porte-oculaires Feather Touch 2.0" Conçu sur mesure pour les Newton GSO Carbon Truss Conception en deux pièces utilisant ...

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Starlight Instruments Adaptateur 2.0" pour lunettes Lunt

Permet de monter un porte-oculaire Feather Touch 2.0" sur les lunettes Lunt compatibles Offre une connexion mécanique directe et solide Usiné spéc...

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Starlight Instruments Adaptateur 2.0" pour télescopes SCT Meade 10, 12, 14"

Connecte des porte-oculaires Feather Touch 2.0" aux grands SCT Meade Compatible avec les modèles Schmidt-Cassegrain Meade 10", 12" et 14" Se visse...

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Starlight Instruments 2.0" Adapter for Meade 10, 12, 14" SCT Telescopes, for FTF2008BCR Focuser
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Starlight Instruments Adaptateur 2.0" pour télescopes SCT Meade 10, 12, 14", pour porte-oculaire FTF2008BCR

Connecte le porte-oculaire FTF2008BCR aux SCT Meade Compatible avec les SCT Meade 10", 12" et 14" Se visse directement sur les grands filetages de...

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Starlight Instruments Adaptateur 2.0" pour télescopes Meade 80mm

Permet de monter un porte-oculaire Feather Touch 2.0" Starlight Instruments Conçu sur mesure pour les télescopes Meade de la série 80mm Offre une ...

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Starlight Instruments Adaptateur 2.0" pour télescopes Dobson à treillis Meade Lightbridge

Permet d'installer un porte-oculaire Feather Touch 2.0" Starlight Instruments Conçu spécialement pour les télescopes Dobson à treillis Meade Light...

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Starlight Instruments Adaptateur 2.0" pour Maksutov-Newton MK190, Intes Alter MN84 Mak-Newton et astrographe ES 8" à tube en carbone

Permet de monter un porte-oculaire Feather Touch 2" Compatible avec le Maksutov-Newton Sky-Watcher MN190 Compatible avec le Maksutov-Newton Intes ...

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Starlight Instruments Adaptateur 2.0" pour télescope MK67/MK69

Connecte des porte-oculaires Feather Touch 2.0" aux télescopes Intes-Micro Conçu spécialement pour les modèles Alter MK67 et MK69 Usiné avec préci...

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Starlight Instruments Adaptateur 2.0" pour William Optics Megrez 90 ancienne génération

Connecte un porte-oculaire Feather Touch 2.0" à une William Optics Megrez 90 ancienne génération Usiné avec précision pour un ajustement solide et...

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Starlight Instruments Adaptateur 2.0" pour télescopes Orion Sky Quest, XT Intelliscope

Permet d'utiliser des porte-oculaires Feather Touch 2.0" sur les télescopes compatibles Convient aux modèles Orion Sky Quest, XT Classic et XT Int...

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Starlight Instruments Adaptateur 2.0" pour télescopes Orion Sky Quest, XT Intelliscope, avec trou de fixation inférieur non circulaire

Permet de monter des porte-oculaires Feather Touch 2.0" Conçu pour les modèles Orion Sky Quest XT Classic & Intelliscope Compatible avec les o...

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Flanges, Terminations and Protective Caps

This collection covers three distinct jobs: mounting a focuser to a tube, terminating a drawtube in a usable thread, and sealing an opening when the equipment is not in use.

  • Telescope-specific mounting flanges: Machined plates matched to a particular tube's bolt pattern, which is what allows an aftermarket focuser to be fitted squarely.
  • Drawtube end terminations: Convert a focuser's native output to a standard thread such as M48 or M68, giving you a clean starting point for an imaging train.
  • SCT and rear-cell flanges: Adapt Schmidt-Cassegrain rear cells to threaded standards for focusers, reducers and cameras.
  • Threaded dust caps: Seal a threaded port when a camera or eyepiece is removed, keeping the interior of the drawtube clean between sessions.
  • Objective and aperture caps: Full-aperture covers, including sub-aperture stops used to reduce light for lunar viewing.
  • Blanking plates: Cover unused ports on filter wheels, focusers and rear cells to prevent stray light entering the train.

Why Choose David Astro for End Caps and Flanges

These parts either fit exactly or do not work at all, so the value is in correct identification rather than selection.

  • Model-specific identification: Tell us the telescope and focuser and we will name the flange, rather than asking you to match a bolt circle from a photograph.
  • Squareness matters: We advise on flanges that hold a focuser perpendicular to the optical axis, because tilt introduced here shows up as one-sided star elongation you cannot process out.
  • Genuine manufacturer parts: Authorized dealer supply with full warranty and verified authenticity.
  • Canadian stock: Small parts held domestically, so a missing cap does not become a two-week wait for a customs clearance.
  • Replacement caps for older gear: We can often source a lost cap for a discontinued telescope through dealer channels.

End Caps and Flanges in Canada — Frequently Asked Questions

How do I identify the flange my telescope needs?
By telescope make and model rather than by measurement, since bolt circles that look similar are often a few millimetres apart. Send us the model and the focuser you intend to fit and we will specify it.
Does a flange affect image quality?
Indirectly but significantly. A flange that holds the focuser slightly off-square tilts the whole imaging train, producing elongated stars on one side of the field regardless of how well the optics perform.
Are dust caps really necessary?
Yes. Dust on an interior surface is far harder to clean than dust on an objective, and moisture that condenses inside a sealed tube takes a long time to clear. Capping every open port between sessions is cheap insurance.
Do you stock these in Canada?
Yes, anything marked in stock is held domestically and ships without duties or brokerage fees for Canadian orders.

Need a specific flange?

Send us your telescope and focuser model and we will identify the exact part. Canadian stock, fast domestic shipping.