From $3,499.99
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The Explore Scientific 115mm f/5.5 FPL-53 ED APO Refractor is an apochromatic air-spaced triplet refractor featuring premium Ohara FPL-53 extra-low dispersion glass for exceptional optical performance with minimal chromatic aberration. With a fast f/5.5 focal ratio and carbon fiber construction, this portable instrument balances excellent light-gathering capability with reduced weight, making it ideal for both visual observation and astrophotography of lunar, planetary, and deep-sky objects. The included 3" hexagonal focuser can support up to 10 pounds of equipment, while the diffraction-limited optical design and enhanced multi-layer coatings deliver brilliant high-contrast images across the entire field of view.
| Aperture | 115 mm |
| Focal length | 632 mm |
| Focal ratio | f/5.5 |
| Optical design | Air-spaced Apochromatic Triplet |
| Glass Type | Ohara FPL-53 ED Glass |
| Resolution | 0.9″ |
| Limiting Magnitude | 13 |
| Focuser | 3 inch Hexagonal |
| Focuser Load Capacity | 10 lb |
| Tube Length with Dew Shield | 660 mm |
| Tube Length without Dew Shield | 603 mm |
| Weight | 6.8 lb |
| Dovetail Mount | Vixen |
| Diagonal | 2 inch, 99% Reflective |
Explore Scientific
$1,599.99
Explore Scientific
~$1,645.60
Explore Scientific
$1,299.99