Apochromatic Refractors

The 107PHQ is a transportable APO refractor for astrophotography with corrected field of view up to full frame sensor and for observation up to the highest magnification range.

• Aperture 107 mm - focal length 740 mm - focal ratio f/7
• 4-element Petzval system with color-correct triplet objective and a corrector lens built into the optical tube
• Stable 3.4" RAP focuser with micro-reduction and 360° rotation - adjustment range 110 mm
• Sufficient working distance for observing with 2" accessories and for photography
• Besides 1.25" and 2" the apo offers M48, M54, M68 and M86 threads for screw adaptions
• 44 mm image circle with full illumination and correction allow the use of large sensors with high resolution
• CNC tube rings with Vixen/EQ5 style dovetail bar and carrying handle
• Finder shoe for standard finder and mini guiding telescopes available
• High quality carrying case for optimal protection of the telescope
• Each Quadruplet Apo is inspected and its optics tested before shipping - you get an optimally adjusted telescope for successful photography and observation from the very beginning.

The new TS Photoline 150 mm f/8 Apo convinces with its high optical performance, neat chromatic correction and very good mechanics - with large 3.7" focuser for astrophotography with large sensors

• Aperture 150 mm / focal length 1200 mm / focal ratio f/8
• Very good chromatic correction due to color-pure imaging by "Extra-Low-Dispersion" FPL53 APO element from Ohara (Japan) and lanthanum glass element
• Fast cooling due to the 2-element objective design
• With only 9.5 kg the telescope is still transportable and can be carried by mounts from EQ6 upwards
• 3.7" focuser with 360° rotation - rack and pinion - one of the best focusers in its class
• Multi-coated objective and inner baffles for optimal contrast
• M92x1 and M68x1 female threads are available for screw adaptions - illumination up to full frame format is given
• Working distance 130 mm from the 2" receptacle or 230 mm without extension between focuser and tube
• Slide-in dew shield, CNC tube rings, finder shoe, dovetail bar and carrying handle are included in the scope of delivery
• Suitable correctors and focal length reducers for astrophotography are available
• Each apo is checked and optimally adjusted on the optical bench at Teleskop-Service before shipment. Upon request, we will send an optics test (stellar imaging focal, extrafocal, intrafocal and Ronchi) with it.

With the FRA600 F/5.6 quintuplet astrograph, Askar has created a pure-color apochromat for astrophotography with large sensors.

• Aperture 108 mm / 4.3"
• Focal length 600 mm
• Focal ratio f/5.6
• 5-element design - the 2-element corrector is permanently installed in the tube
• 66 mm image circle with full illumination and correction
• 140 mm working distance for observation with 2" star diagonal
• Long transition adapter for photography to M48x0.75 with 2" filter thread included
• Rugged 4" RAP focuser with dual speed reduction and 360° rotation
• Losmandy style dovetail bar
• Flexible tube rings with carrying handle and lateral threads for individual adaptations
• Finder shoe for standard finder bracket
• Each FRA600 comes with an inspection checklist from the manufacturer and is also tested on our optical bench