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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.

Adaptateurs

Almost every imaging train problem in astrophotography — soft corners, elongated stars, a camera that will not come to focus — traces back to a few millimetres of the wrong adapter. David Astro carries adapters in Canada covering M42, M48, M54, M68, SCT and Nikon and Canon bayonet standards, along with barrel adapters in 1.25" and 2", all in stock and shipping from Canada.

Adapters are the one product category where buying blind is genuinely expensive. Our team calculates back-focus and thread compatibility for customers every day, so before you assemble a stack from guesswork, send us your components and we will specify the parts.

Filtres

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Rallonge PrimaLuceLab 7mm M48

PLL-PL3304807
1 en stock

Les rallonges PrimaLuceLab M48 sont disponibles en différentes longueurs et elles se présentent des deux côtés d'un filetage M48 (un côté est mâle,...

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$19.00
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$19.00

Rallonge PrimaLuceLab 7mm T2

PLL-PL3304207
1 en stock

Les extensions PrimaLuceLab T2 sont disponibles en différentes longueurs et elles se présentent des deux côtés d'un filetage T2 (un côté est mâle, ...

Afficher tous les détails
$19.00 - $19.00
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$29.00

Rallonge PrimaLuceLab 9mm M48

PLL-PL3304809
1 en stock

Les rallonges PrimaLuceLab M48 sont disponibles en différentes longueurs et elles se présentent des deux côtés d'un filetage M48 (un côté est mâle,...

Afficher tous les détails
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$24.00
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$24.00

Rallonge PrimaLuceLab 9mm T2

PLL-PL3304209
1 en stock

Les extensions PrimaLuceLab T2 sont disponibles en différentes longueurs et elles se présentent des deux côtés d'un filetage T2 (un côté est mâle, ...

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$595.00 - $595.00
$595.00
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$595.00

Adaptateur PrimaLuceLab ESATTO 2" pour Borg 55FL f3.6

PLL-PL3600248

Cet adaptateur vous permet ainsi d'utiliser le microfocuseur robotique ESATTO 2" avec l'objectif fluorite Borg 55mm et le réducteur 7880 pour créer...

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$595.00 - $595.00
$595.00
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$79.00 - $79.00
$79.00
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$79.00

Adaptateur PrimaLuceLab ESATTO 2" pour GSO/Orion/TPO Ritchey-Chretien 6 et 8"

PLL-PL3600235

Si vous recherchez la mise au point motorisée la plus précise pour utiliser le GSO/Orion/TPO Ritchey-Chretien 152 mm f/9 ou 203 mm f/8 (tubes alum...

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$79.00 - $79.00
$79.00
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$145.00 - $145.00
$145.00
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$145.00

Adaptateur PrimaLuceLab ESATTO 2" pour Sky-Watcher/Orion ED80, ED100 et ED120

PLL-PL3600230

Si vous recherchez le porte-oculaire motorisé le plus précis pour utiliser les réfracteurs apochromatiques SkyWatcher/Orion ED80, ED100 ou ED120 po...

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$165.00
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$165.00

Adaptateur PrimaLuceLab ESATTO 2" pour Sky-Watcher/Orion Newton 200 f4 et f5

PLL-PL3600229

Si vous recherchez la mise au point motorisée la plus précise pour utiliser les réflecteurs SkyWatcher/Orion Newton 200 f4 et f5 pour l'astrophotog...

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$165.00 - $165.00
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$165.00

Adaptateur PrimaLuceLab ESATTO 2" pour Sky-Watcher/Orion Newton 250 f4 et f5

PLL-PL3600237

Si vous recherchez la mise au point motorisée la plus précise pour utiliser le réflecteur SkyWatcher/Orion Newton 250 f4 et f5 pour l'astrophotogra...

Afficher tous les détails
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$165.00
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$145.00 - $145.00
$145.00
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$145.00

Adaptateur PrimaLuceLab ESATTO 2" pour Takahashi FS-60Q

PLL-PL3600255

Si vous recherchez la mise au point motorisée la plus précise pour Takahashi FS-60Q, cet adaptateur vous permet de connecter ESATTO 2" à ce télesc...

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$145.00 - $145.00
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Adaptateur PrimaLuceLab ESATTO 2" pour télescopes avec grand filetage SC 3,3"

PLL-PL3600212

L'adaptateur SC 3,3" pour ESATTO 2" vous permet de connecter l'ESATTO 2" aux modèles Celestron SCT (11" et 14") et EdgeHD (925, 1100 et 1400). Étan...

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Adaptateur PrimaLuceLab ESATTO 2" pour télescopes avec filetage SC

PLL-PL3600209

Grâce à son profil bas, l'ESATTO 2" est le porte-oculaire motorisé parfait pour les télescopes Schmidt-Cassegrain comme les modèles Celestron SCT ...

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PrimaLuceLab Adapter ESATTO 3" for ARCO 2"

PLL-PL3600416

Adapter ESATTO 3" for ARCO 2" allows you to connect the rotator to ESATTO 3" microfocuser and control it through the special port on ESATTO. By ad...

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$95.00
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$95.00

PrimaLuceLab Adapter ESATTO 3" for ARCO 3"

PLL-PL3600458

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$195.00
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$195.00

Adaptateur PrimaLuceLab ESATTO 3" pour Borg 90FL et 107FL f3.9

PLL-PL3600268

Si vous recherchez la mise au point motorisée la plus précise pour Borg 90FL et 107FL f3.9, cet adaptateur vous permet de connecter ESATTO 3" à ce...

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$195.00 - $195.00
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$125.00 - $125.00
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Adaptateur PrimaLuceLab ESATTO 3" pour GSO/Orion/TPO Ritchey-Chretien 10, 12, 14 et 16"

PLL-PL3600236

Si vous recherchez le porte-oculaire motorisé le plus précis pour utiliser les GSO/Orion/TPO Ritchey-Chretien 10, 12, 14 et 16 pouces (tubes alumin...

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$295.00
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$295.00

Adaptateur PrimaLuceLab ESATTO 3" pour Meade 16" avec filetage 4"

PLL-PL3600292

L'adaptateur ESATTO 3" pour Meade 16 pouces avec filetage 4" permet de connecter ESATTO 3" aux télescopes Meade LX200 SCT, LX200 GPS, LX200-ACF, L...

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$255.00 - $255.00
$255.00
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$255.00

PrimaLuceLab Adaptateur ESATTO 3" pour Sky-Watcher ESPRIT 100 ED

PLL-PL3600288

Adaptateur ESATTO 3" pour SkyWatcher ESPRIT 100 ED.

$255.00 - $255.00
$255.00
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PrimaLuceLab Adaptateur ESATTO 3" pour Sky-Watcher ESPRIT 120 ED et 150 ED

PLL-PL3600253

Adaptateur ESATTO 3" pour SkyWatcher ESPRIT 120 ED et 150 ED

$255.00 - $255.00
$255.00
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$255.00
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$95.00
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$95.00

Adaptateur PrimaLuceLab ESATTO 3" pour Takahashi FSQ85

PLL-PL3600271

Si vous recherchez la mise au point motorisée la plus précise pour Takahashi FSQ85, cet adaptateur vous permet de connecter ESATTO 3" à ce télesco...

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$95.00 - $95.00
$95.00
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$95.00
$115.00 - $115.00
$115.00
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$115.00

Adaptateur PrimaLuceLab ESATTO 3" pour télescopes Takahashi avec filetage M72

PLL-PL3600245

Grâce à son profil bas, l'ESATTO 3" est le porte-oculaire motorisé parfait pour les télescopes Takahashi avec filetage M72. En ajoutant l'adaptate...

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$295.00 - $295.00
$295.00
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$295.00

Adaptateur PrimaLuceLab ESATTO 3" pour Takahashi TSA 120

PLL-PL3600296

Si vous recherchez la mise au point motorisée la plus précise pour Takahashi TSA120, cet adaptateur vous permet de connecter ESATTO 3" à ce télesc...

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$295.00 - $295.00
$295.00
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$235.00 - $235.00
$235.00
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$235.00

Adaptateur PrimaLuceLab ESATTO 4" pour Officina Stellare ProRC, RiDK, RiFAst

PLL-PL3600326

L'adaptateur ESATTO 4" pour Officina Stellare ProRC, RiDK, RiFAst vous permet d'installer le porte-oculaire ESATTO 4" sur les télescopes ProRC, Ri...

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$235.00 - $235.00
$235.00
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$235.00
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$165.00
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$165.00

Adaptateur PrimaLuceLab ESATTO 4" pour Takahashi FSQ-106

PLL-PL3600310

L'adaptateur ESATTO 4" pour Takahashi FSQ-106 vous permet d'installer ESATTO 4" à la place du porte-oculaire Takahashi d'origine. Cet adaptateur ...

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$165.00
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$165.00

Understanding Thread Standards and Back-Focus

An adapter does two things at once: it changes the connection type, and it changes the distance between your corrector and your sensor. The second effect is the one that causes trouble, because most reducers and flatteners have a back-focus tolerance of about one millimetre.

  • M42 (T-thread, 0.75 mm pitch): The long-standing standard for camera adapters. Its clear aperture will vignette sensors larger than APS-C, so full-frame imaging trains should avoid it.
  • M48 (2" thread, 0.75 mm pitch): The practical choice for APS-C and full-frame sensors, with enough clear aperture to avoid mechanical vignetting.
  • M54 and M68: Larger-diameter threads used by heavier astrographs and larger-format correctors where rigidity and aperture both matter.
  • SCT 2"-24 TPI: The rear-cell thread on Schmidt-Cassegrains; requires a specific adapter to reach M42 or M48 for imaging.
  • Bayonet adapters: Canon EF and Nikon F adapters place a DSLR or mirrorless body at the correct flange distance, typically 44 mm and 46.5 mm respectively.
  • Fine-tuning spacers: 0.5 mm, 1 mm and 2 mm shims that let you land exactly on a corrector's specified spacing rather than near it.

Why Choose David Astro for Adapters

An adapter is a cheap part that determines whether an expensive telescope performs. We treat it that way.

  • Free back-focus calculation: Give us your camera, filter thickness, reducer and telescope and we will return a component list with the total spacing worked out.
  • Filter thickness accounted for: Glass in the light path shifts focus by roughly one third of its thickness, and we include that in the calculation rather than leaving you to discover it.
  • Male and female threads identified: We specify the gender and standard on both ends, which is the detail most listings omit.
  • Deep Canadian stock: Hundreds of adapters held domestically, so a missing 10 mm spacer does not cost you three weeks of clear sky.
  • Authorized dealer: Genuine manufacturer parts with full warranty, shipped from Canada without duties for Canadian buyers.

Adapters in Canada — Frequently Asked Questions

How do I calculate my back-focus?
Add your camera's sensor-to-flange distance, any filter wheel or off-axis guider, the filter's optical shift, and every spacer between the camera and the corrector. That total must match the corrector's specified figure, usually 55 mm for a standard reducer.
Should I use M42 or M48?
Use M48 for any sensor larger than APS-C. M42 has enough clear aperture for smaller sensors but will mechanically vignette a full-frame chip regardless of the optics ahead of it.
Do filters change my spacing?
Yes. A filter shifts the focal plane by about one third of its glass thickness. A 3 mm filter adds roughly 1 mm to the effective optical path, which is enough to matter at a 55 mm target.
What if I order the wrong adapter?
Contact us with your setup before ordering and we will confirm the parts. That is a faster path than exchanges, and it is a service we provide free.

Send us your imaging train

We will calculate the spacing and specify every adapter you need. Canadian stock, no guesswork.