Search results for 'william optics uniguide 50mm'
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SkyWatcher APO Esprit 100 with Flattener
Regular Price: US$ 2,471.34
US$ 2,029.87
Esprit 100ED APO Triplet Apochromatic Refractor optical tube with 100mm diameter, 550mm focal length, f/5.5 and equipped with field flattener, rigid case and accessories. 
Artesky 80ED f/7 APO Refractor
US$ 484.73Artesky introduces the new line of APO ED refractors, the new 80mm doublet with 2 element objective, the first is a FCD1-B Ohara (Japan) element while the second is a Lanthanum element. It is possible to reduce it with a factor of 0.8x and bring it to a focal length of 450mm with factor F/5.6 or use it at full focal length with the 1x variable field flattener.
SkyWatcher APO Esprit 150 with Flattener
US$ 6,356.25Esprit 150ED APO Triplet Apochromatic Refractor optical tube, 150mm diameter, 1050mm focal length, f/7 and equipped with field flattener, rigid case and accessories.
The powerful 6-element Apo with 76 mm aperture and 342 mm focal length has been developed by Teleskop-Service for astrophotography.
- Aperture 76 mm
- Focal length 342 mm
- High focal ratio f/4.5 for short exposure times
- Illuminated and corrected image field of 44 mm diameter - usable up to full format
- Multi-coated FPL53 APO Triplet lens, free from false color
- Screwed 3-element ED corrector with 55 mm working distance from the M48 camera connection
- 3" RAP rack and pinion focuser with 360° rotation possibility
- 2" and 1.25" connection for observation are included - 1.25" and 2" accessories can be used
- 2" nebula filters can be screwed into the corrector
- CNC tube rings with handle, viewfinder shoe and V-style dovetail bar are included in delivery
- The handle offers adaptation options for guide scope or camera
TS-Optics Doublet SD Apo 72 mm f/6 - FPL53
US$ 537.70TS Photoline APO refractor wit 72 mm aperture and fast f/6 focal ratio, a great travel telescope for observation and astrophotography.
- ♦ Powerful, aberration-free apochromatic refractor with 72 mm aperture and 432 mm focal length.
- ♦ Fast focal ratio: f/6
- ♦ FPL53 doublet objective (Ohara Japan), air-spaced - additional lanthanum element, so no chromatic aberration
- ♦ 2.5" dual-speed rack-and-pinion focuser - ball bearing mounted for maximum load with M63x1 female thread for adaptions
- ♦ Retractable dew cap - the apo even fits into the hand luggage
- ♦ CNC tube rings with versatile dovetail bar - EQ5 style and with photo tripod connection.
- ♦ Findershoe on the focuser is included
- ♦ Weight only 2.18 kg - transport length only 31 cm
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