TS-Optics FPL53 APO Refractor – 80 (Triplet)

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