How does the Explore Scientific FCD100 127mm APO perform on planets like Jupiter and Saturn?

This telescope excels at planetary observation. The 127mm aperture resolves fine details, while the apochromatic FCD100 optics ensure maximum contrast without false color. You can expect to clearly see Jupiter's main cloud bands, the Great Red Spot, and the Cassini Division in Saturn's rings under steady seeing conditions.

Is the Explore Scientific 127mm Triplet suitable for imaging a large nebula like the North American Nebula (NGC 7000)?

Yes, but you will likely need a focal reducer. At its native f/7.5 focal ratio, the telescope is well-suited for smaller nebulae and galaxies. To fit very large objects like the North American Nebula or the Andromeda Galaxy (M31) into a single frame, adding a 0.7x or 0.8x reducer/flattener is recommended to widen the field of view.

What kind of mount is required for the Explore Scientific FCD127 APO?

For visual use, a medium-duty equatorial mount like a Celestron AVX or Sky-Watcher HEQ5 is sufficient. For astrophotography, a more robust mount in the payload class of a Sky-Watcher EQ6-R Pro or Celestron CGX is strongly recommended to ensure stability for long exposures.

What is the benefit of the 2.5" HEX focuser on the FCD100 127mm?

The 2.5" HEX focuser uses a hexagonal drawtube and a rack-and-pinion mechanism. This design is significantly more rigid than typical Crayford focusers, preventing tilt or flex when loaded with a heavy camera, filter wheel, and off-axis guider. It ensures your entire imaging train remains perfectly orthogonal to the light path.

How does HOYA FCD100 glass compare to FPL-53 in this refractor?

HOYA FCD100 and Ohara FPL-53 are considered functional equivalents in their ability to correct for chromatic aberration. Both are premier ED glass types that, when used in a triplet objective lens design, produce a true apochromatic image with virtually no color fringing. The FCD100 glass in this 127mm refractor ensures it delivers performance on par with other premium APOs.

Can I use 2" eyepieces and accessories with the Explore Scientific 127mm FCD100?

Yes. The 2.5" focuser terminates with a standard 2" adapter, allowing you to use any 2" diagonal, eyepiece, or imaging accessory. A 1.25" adapter is also typically included for use with smaller format eyepieces.

$Explore Scientific ED127-FCD100 f/7.5 Réfracteur Triplet APO$

Explore Scientific ED127-FCD100 f/7.5 Réfracteur Triplet APO

par Explore Scientific

UGC ES-FCD100-127075-02

$2,499.99 - $2,499.99

$2,499.99

$2,499.99 - $2,499.99

$2,499.99

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Révélez des merveilles célestes comme la beauté désolée du terrain lunaire, la structure sereine des anneaux de Saturne ou les trésors du ciel profond les plus brillants du catalogue Messier avec ce véritable réfracteur apochromatique de 127 mm de la série FCD100 d'Explore Scientific.

Explore Scientific ED127-FCD100 f/7.5 Réfracteur Triplet APO

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