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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23
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Description
Explore FirstLight 102mm f/9.8 Doublet Refractor Telescope (OTA only)A 102mm f 9. 8 achromatic doublet refractor that delivers sharp, high contrast views of the Moon and planets sold as an optical tube assembly for observers who already own a mount or want to choose their own. The long f 9. 8 focal ratio is naturally forgiving of eyepiece quality and produces tight, well corrected star images without the coma or field curvature that faster telescopes struggle with. The 1000mm focal length reaches useful planetary
A 102mm f/9.8 achromatic doublet refractor that delivers sharp, high-contrast views of the Moon and planets — sold as an optical tube assembly for observers who already own a mount or want to choose their own.
The long f/9.8 focal ratio is naturally forgiving of eyepiece quality and produces tight, well-corrected star images without the coma or field curvature that faster telescopes struggle with. The 1000mm focal length reaches useful planetary magnifications with common eyepieces — a 10mm eyepiece delivers 100x, enough to split Saturn's rings and resolve Jupiter's cloud belts. Fully multi-coated optics maximize light transmission through the doublet objective.
Ships with everything you need except a mount: a 90° star diagonal for comfortable viewing angles, a 25mm Plossl eyepiece (40x) for finding and framing targets, a red-dot finderscope for alignment, and a smartphone camera adapter for quick lunar snapshots.
Key Features
- 102mm (4") achromatic doublet objective, fully multi-coated
- 1000mm focal length, f/9.8 — optimized for high-contrast planetary views
- Includes 90° diagonal, 25mm Plossl eyepiece, red-dot finder, smartphone adapter
- Vixen-style dovetail for universal mount compatibility
Ideal For
- Mount owners adding a refractor — the Vixen dovetail drops onto any compatible equatorial or alt-az mount
- Planetary and lunar observers — f/9.8 delivers the high contrast that planets demand
- Budget-conscious beginners — the most affordable FirstLight refractor OTA, ready to pair with any mount
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy