TS-Optics

The TS-Optics Catalogue

The line covers optics and the mechanical components that connect them, with unusual depth in the connecting parts.

• Photoline apochromatic refractors: ED doublets and triplets aimed at imaging, with matched flatteners and reducers available for each focal length.
• Field flatteners and reducers: Both model-specific correctors and general-purpose units designed to work across a range of focal ratios.
• Adapters and spacers: An extensive range across M42, M48, M54 and M68 with fine spacer increments, which is what makes hitting an exact back-focus practical.
• Focusers and rotators: Rack-and-pinion focusers and camera rotators with load capacities suited to real imaging trains.
• Newtonian components: Optical tubes, correctors and mechanical parts for imaging Newtonians.
• Eyepieces and visual accessories: Wide-field eyepieces, diagonals and Barlows across the usual barrel sizes.

Why Choose David Astro for TS-Optics

A deep adapter catalogue is only an advantage if someone can navigate it for you.

• Adapter identification service: Tell us the two components you need to join and we will specify the exact part, including thread gender and length.
• Back-focus calculated: We use the fine spacer range to land exactly on your corrector's design distance rather than approximately near it.
• Corrector matched to focal ratio: General-purpose flatteners have a working range, and we confirm yours falls inside it.
• Authorized dealer: Genuine products with manufacturer warranty, in Canadian stock.
• Ships from Canada: No duties or brokerage fees for Canadian orders.

TS-Optics in Canada — Frequently Asked Questions

How do I find the right adapter?

Tell us what is on each side — the thread standard and whether it is male or female — and the total length you need. We will identify the part rather than have you work through a catalogue.

Will a general-purpose flattener work on my telescope?

Within its designed focal ratio range, usually well. Outside it, correction degrades toward the corners. A model-specific corrector always performs better where one exists.

Are fine spacers really necessary?

Yes, at fast focal ratios. Correctors have roughly a millimetre of tolerance, and filter thickness alone can consume most of it, so half-millimetre shims are how you land exactly.

Do these refractors need a specific flattener?

Each focal length has a recommended corrector with its own back-focus figure. Tell us the tube and camera and we will specify the pairing and the spacers.

Solving a connection problem?

Tell us what you need to join and we will identify the parts. Canadian stock, fast domestic shipping.