TS-Optics 110 mm f/4.8 Flatfield APO Refractor with FDC100 Triplet Objective

TS-Optics 110 mm f/4.8 Flatfield APO Refractor with FDC100 Triplet Objective

An ultimate and compact APO refractor for astrophotography and observation.

  • Aperture 110 mm / focal length 528 mm / focal ratio f/4.8
  • FCD100 triplet lens with f/6 - chromatic correction comparable to FPL53 triplet
  • 4-element 0.8x corrector with M48 camera connection and working distance of 55 mm included - designed for this lens for highest field sharpness
  • 2" filter thread and 360° rotation included
  • 2" Visual-Back can be screwed to the focuser instead of the corrector for observation - working distance suitable for 1.25" and 2" accessories
  • Delivery in high-quality carrying case
  • Each apo is tested (cosmetics, optics and mechanics) at Teleskop-Service before shipment, the optics are collimated. The apo is shipped with a checklist.
Manufacturer : TS Optics
SKU : TSO-TSAPO110FLAT
Price: 2999.00 € incl tax 19% (Germany)
Estimated delivery time : 1-4 days
Product description

This apochromat offers chromatically very well corrected optics and the best possible field correction. The objective is optimized for very good chromatic correction without compromise. The sphere is also exemplary. The Ronchi test reveals straight lines. Thus, the apo is designed for observation up to the highest magnification range of about 350x.

For astrophotography, a 0.8x full-frame corrector was developed especially for this objective. The 4-element corrector provides very good imaging quality throughout the field. Even with high-resolution full-frame sensors, such as ZWO´s ASI6200 camera, the stars will remain pinpoint at the edge.

The idea behind the TSAPO110FLAT:

Until now, you have always had to compromise with flatfield optics, sacrificing some sharpness on the axis in favor of good field sharpness. Or you take a "general corrector" and try to achieve the best possible field correction by adapting distances. The result is a compromise, usually a good one, but still a compromise.

The concept behind this apo avoids the compromise, because the 110 mm f/6 objective is optimized for highest sharpness on the axis. And the corrector is optimized only for this objective. Four elements were necessary to make the high sharpness available to you in the entire field.

Scope of Delivery:

  • 110 mm apochromat
  • 0.8x photo corrector
  • 2" visual adapter with 1.25" reducer
  • Carrying handle with connection for guiding scope
  • Finder shoe on focuser
  • Vixen style dovetail bar
  • Dust caps
  • Carrying case
Products specifications
Dewcap diameter 156 mm
Aperture 110 mm
Tube material ALU / CNC produced
Connection to eyepiece 2" / 1.25"
Type of telescope 3 elements glass with airspace
Lens Air-spaced triplet objective, Hoya FCD100 as APO element
Color white/red
Focuser 3.2" CNC R & P focuser, 100 mm travel
Focal ratio f/6 or f/4.8 with Correktor
Tube diameter / Length 130mm / 580mm
Tube weight 9.4 Kg
Other features Camera connection: M48x0.75 with 2" filter thread
Note Working distance: 55 mm from M48 thread