TS-Optics FPL53 APO Refractor - 80 (Triplet)
TS-Optics FPL53 APO Refractor - 80 (Triplet)
TS-Optics FPL53 APO Refractor - 80 (Triplet)
TS-Optics FPL53 APO Refractor - 80 (Triplet)
TS-Optics FPL53 APO Refractor - 80 (Triplet)

TS-Optics FPL53 APO Refractor - 80 (Triplet)


Regular price$1,479.00
(Including VAT)
TSQ-80APO 80/544mm FPL53 Flatfield APO Refractor.
This flatfield Apochromat provides a color-pure and well-corrected image on the axis as well as in the field and thanks to the 2-element corrector in the OTA, it has a well-corrected image circle of 45 mm in diameter. This means you can also use cameras with full-frame sensors giving you a nice wider field of view of the target you are imaging.

Adaptation of Cameras:
The generous working distance is between 65mm and 155mm from the M68 thread and to connect a DSLR or an Astrocamera via the M48 thread, you will need the M68A-M48A-30 adapter. Cameras with a T2 (M42x0.75) connection will require a TSM48i-T2A reduction adapter. The adapter itself is only 6mm thick, so you still have enough space for a DSLR camera with T2 adapter or an Astrocamera.

Features and benefits of the TSQ-80APO:
  • Modern 80 mm f/6 FPL53 triplet lens
  • Integrated 2-element field corrector with optimized distance to the lens
  • 2.5" CNC gear focuser (Rack & Pinion) with ball bearing and 1:10 micro reduction
  • Each Quadruplet Apo is checked by Teleskop-Service before shipping.
  • The moderate aperture ratio of f/6.8 is well suited for DSLR cameras and Astrocameras.
Technical Details:
  • Aperture: 80 mm
  • Focal length: 544 mm
  • Aperture ratio: f/6.8
  • Lens: FPL53 triple lens with air gap
  • Corrector: 2-element corrector at an optimized distance from the lens
  • Field of view: 45 mm diameter with full correction and illumination
  • Back focus from 2" receptacle: 130mm with retracted extension
  • Back focus from the M68x1 female thread: 148.5mm with retracted pull-out pipe
  • Adjustment range of the extract: 90mm
  • Tube length with inserted dew cap: 450mm
  • Tube diameter: 89mm
  • Dew cap diameter: 112 mm
  • Camera-side connection: 2", 1.25" and M68x1 female thread
  • Tube weight with tube clamps: 3.5kg

Whats included:

  1. 80 mm Quadruplet Apochromat Refractor
  2. CNC pipe clamps
  3. GP/EQ5 Level dovetail bar with photo tripod connection
  4. 2.5" RPA focuser with 2" receptacle
  5. Reduction from 2" to 1.25"
  6. Viewfinder shoe


As Christmas approaches, the last date for Deliveries and Collections will be the 15th December 2023.

Any orders placed after this date will be processed and shipped again from the 4th January 2024.

"We would like to take this opportunity to wish you and your family a very Happy Christmas & many nights of Clear Skies!"

Please Note: Items in stock and ready for dispatch immediately are usually delivered within 24 - 72hrs. We always try to offer the quickest possible delivery so items may be sent directly from either our Dublin or our Munich location, depending on stock availability. If an item is a 'Special Order Item' it will require additional lead time before being dispatched eg. 5 - 10 Working days - This will be highlighted on the product page before purchase.

All orders are shipped using our reputable courier partners to ensure your items arrive safely and promptly. While we do offer International Delivery, we are unable to ship large Telescopes and Mounts outside of Ireland.



Est. Delivery Time after Dispatch:
24 - 72 hrs

Standard Tracked Delivery:
Ireland Nationwide: from €9.95

Note: Larger telescopes which contain multiple boxes include an additional surcharge. Shipping is calculated automatically at the checkout.





Est. Delivery Time after Dispatch:
24 - 72 hrs

Standard Tracked Delivery:
Norther Ireland: from €19.50+

Additional Info:

Standard Express Shipping rate applies up to a max order weight of 30kg Nationwide. - Large heavy items from 30kg+ include an additional surcharge, depending on the overall weight.

Unfortunately due to Brexit we are currently unable to ship to Mainland UK at this time. 


Est. Delivery Time after Dispatch:
24 - 72 hrs

Standard Tracked Delivery:
European Union: from €18.95+

Shipping available for items up to a max order total weight or volumetric weight of 27kg.

Additional Info:

If your country is not listed below please contact us for more information.

Standard EU Delivery Regions:
Germany, France, Belgium, Poland, Luxumbourg, Netherlands, Sweden, Denmark, Portugal, Spain, Austria, Italy, Poland, Czech Republic, Croatia, Malta, Greece


Est. Delivery Time after Dispatch:
48 - 72 hrs

Standard Tracked Delivery:
US & Canada: from €28.50+

Shipping service available for items up to a max order total weight or volumetric weight of 20kg.

Additional Info:

 * Customs / Import duties may apply in these regions. For more information please contact your local tax/customs office.

: Its essential that when placing an order, you include a valid 'Contact Telephone Number' for the delivery address or for the person receiving the item. This is necessary to avoid potential delays or problems with your delivery.

Please Note: Delivery times listed above are estimated. These are calculated from when your order is Completed & Dispatched (not from when the order is placed) and times may also vary for some remote post codes. Delivery service takes place Mon-Fri (excl. Bank/Public Holidays).

Shipping Disclaimer: All of our parcels are sent via a 3rd party registered courier service to ensure safe and prompt delivery. While we endeavor to ensure that all parcels are delivered within the specified time frame, 'Horizon Astronomy' can not be held responsible for delays due to adverse weather conditions or other courier/technical related issues outside of our control.

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