The Explore Scientific 102mm f/7 Apochromatic ED Triplet Telescopefrom Explore Scientific 102mm f/7 Apochromatic ED Triplet 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 versatile optical tube assembly (OTA) that is powerful enough to clearly see the planets and bright deep-sky objects. It has a relatively small form factor that makes it perfect as a portable grab-and-go option, or set up on a dual-mount rig for astrophotography/astroimaging.

A mounting cradle-ring clamps over the 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 heavy-duty 2.5" hexagonal two-speed rack-and-pinion focuser helps make fine-focusing fast and precise, even when carrying heavy loads like large eyepieces or imaging rigs. 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.

102mm Aperture    714mm Focal Length, f/7 Focal Ratio    Apochromatic Triplet Lens System    Hoya FCD100 Extra-Low Dispersion Glass    Proprietary EMD Enhanced Multi-Coatings    Two-Speed 2" Rack-and-Pinion Focuser    1.25" Adapter and 90° Star Diagonal    Vixen-Style Dovetail Plate    Mounting Cradle-Ring with Handle    Mount and Tripod Required

• 102mm objective lens
• 714mm focal length
• Focal ratio: f/7
• 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: 1.14 arc sec
• Bracket for user-supplied finderscope

• Large 2.5" hexagonal drawtube resists flexing under heavy loads to ensure large eyepieces and imaging systems remain optically centered in the light path
• Sturdy 2-speed rack-and-pinion focuser provides precise focus control
• Focus lock prevents accidental movement in the focusing mechanism—ideal for imaging sessions
• Drawtube is rated to carry up to 10 pounds of gear

• Optical tube assembly only—mount and tripod required for proper use, or mount on a larger scope for use with a guide camera
• 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
• Weight: 12 pounds

• One-piece 2" 90° star diagonal with highly reflective dielectric coatings for up to 99% light transmission
• 1.25" eyepiece adapter to use the more common size eyepieces in the larger drawtube and diagonal holder
• Extension tubes enable the user to achieve the proper back focus during imaging and astrophotography

Related Questions and Answers

Q: 1. 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: 2. 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: 3. Can this be mounted to an eq mount?

A: Unfortunately no. It uses a proprietary yoke mount so it cannot be used on a different mount such as an EQ.

Q: 4. Is the ED glass FPL-51 or FPL-53?

A: That information is not provided by the manufacture

Q: 5. I purchased this scope a few weeks ago. I have yet to achieve focus using a dslr without the diagonal. I've purchased 2" extension tubes that just dont fit on the tubes that came with it. What extention tubes actually fit on this?

A: What make and model of camera are you using and where in the scope are you mounting the camera

Q: 6. Is the Hoya FDC 100 ED better than the standart ED ?Thanks

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

Q: 7. 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: 8. 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.

Q: 9. Tube dimension ??

A: The Explore Scientific FirstLight 130mm f/4.6 Alt-Az Newtonian Telescope BH #EXFLN130NT • MFR #FL-N130600MAZ01 (OTA) is about 24" X 6"

Q: 10. 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.