The Explore Scientific 127mm f/7.5 ED Triplet Refractor Telescopefrom Explore Scientific 127mm f/7.5 ED Triplet Refractor Telescopefeatures a triplet apochromatic lens system with Hoya's exceptionally engineered and crafted FCD100 extra-low dispersion (ED) glass and Explore Scientific's proprietary anti-reflection EMD fully multi-coated optics. This combination of glass, lenses, and coatings virtually eliminates chromatic and spherical aberrations for clear and bright images without distortion across the entire field of view, with true color rendition. This is a powerful optical tube assembly that can be used to see detailed views of celestial objects from the Moon to deep sky objects like nebulae and galaxies. It is also portable enough to be used as a grab-and-go option over larger and heavier scopes or set up on a dual-mount rig for astrophotography/astroimaging.

A mounting cradle-ring clamps over optical tube assembly (OTA). The cradle-ring allows the user to adjust the orientation and position of the scope relative to the mount to optimize viewing comfort and balance, while avoiding interference with other equipment. The scope is offered without a mount or tripod, but a Vixen-style dovetail plate makes it compatible with any alt-az or equatorial mount with a Vixen-style saddle. Its two-speed rack-and-pinion focuser helps make fine-focusing fast and precise. A 90° star diagonal is also included for more comfortable viewing. The mirror has dielectric coatings for a 99% light transmission for minimal light loss when using it.

127mm Aperture    952mm Focal Length, f/7.5 Focal Ratio    Hoya FCD100 Extra Low Dispersion Glass    Proprietary EMD Enhanced Multi-Coatings    Vixen-Style Dovetail Plate    Apochromatic Triplet Lens System    Mounting Cradle-Ring with Handle    Two-Speed 2" Rack-and-Pinion Focuser    1.25" Eyepiece Adapter    90° Star Diagonal

• 127mm objective lens
• 952mm focal length
• Focal ratio: f/7.5
• Refractor-style optical design
• Hoya FCD100 extra-low dispersion (ED) glass all but eliminates chromatic aberration for enhanced contrast and accurate color rendition across the entire visible spectrum
• Triplet apochromatic lenses reduces spherical aberrations and corrects distortion across the entire field of view
• Proprietary anti-reflection EMD enhanced multi-coatings on all optics improve light transmission to help produce bright and clear high-contrast images
• Resolution: 0.9 arc sec

• Two-speed 2" rack-and-pinion focuser
• Bracket for user-supplied finderscope
• One-piece 2" 90° star diagonal with highly-reflective dielectric coatings for up to 99% light transmission
• 1.25" eyepiece adapter

• Vixen-style dovetail plate included
• User-supplied mount and tripod required
• Compatible with any alt-az or equatorial mount with a Vixen-style saddle
• Cradle-ring assembly for plate allows the scope orientation to be changed based on mount configuration
• Integrated carry handle on cradle-ring assembly

Related Questions and Answers

Q: 1. How tall is the tripod ?

A: Sorry that information is not specified by Explore Scientific.

Q: 2. What is the total weight with accessories?

A: 20 lbs.

Q: 3. Is there a custom hard case available for this scope?

A: There is no dedicated case for the Explore Scientific 102mm f/7 FCD100 Apo Triplet Refractor Telescope (OTA Only) BH #EX102F7ARTO • MFR #FCD100-10207-02 that B&H sells.

Q: 4. Viewing wise what size Mak-cas would be equal to a 102 mm refractor ?

A: You cant match the field of view (how much of sky you see) with a mak but a mak 130 to 150 would yeld the same viewing resolution

Q: 5. hello, what size is the focusser,?

A: It is a 2 Focuser.

Q: 6. What do I need to purchase along with this product to connect my Canon 60D for astrophotography ?

A: First you would need a T-Adapter that goes into the eyepiece part of the scope. The Celestron-SLR (35mm OR Digital) Camera Adapter would work great. Wesbite Link to the T-Adapter: a href= http://bhpho.to/1lwAhIO target= _blank http://bhpho.to/1lwAhIO/aNow to mount your Canon 60D you would need what is called a T-Ring, which threads onto the T-Adapter. The Vello Lens Mount Adapter-T-Mount Lens to Canon EOS Camera will be perfect. Website link to the T-Ring: a href= http://bhpho.to/19wYgWY target= _blank http://bhpho.to/19wYgWY/aThese are the 2 adapters you would need to attach your camera to this scope.

Q: 7. What adapters or accessories should be purchased for attaching to a micro-4/3 camera (Olympus OM-D EM5 mark3)?

A: In order to adapt an M43 camera to the Explore Scientific ED80 80mm f/6 Essential Series Air-Spaced Triplet Refractor Telescope you would need these 2 parts: https://bhpho.to/4dUckfj plus https://bhpho.to/48hlWwL.

Q: 8. Is the ED glass FPL-51 or FPL-53?

A: That information is not provided by the manufacture

Q: 9. Is there a T-adapter and T-ring that will let me focus my Nikon D750 camera with this telescope ?

A: You would need these 2 parts: https://bhpho.to/35GIvN3 Plus: https://bhpho.to/35M3E8u

Q: 10. Is Hoya FCD 100 ED better than standart ED ?

A: The FCD1 Glass is very very good for photography, not a lot of difference visually though between them.