Ursa Major FMC Flatfield Eyepiece 15.5mm

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Ursa Major FMC Flatfield Eyepiece 15.5mm

Now: £36.00 (Save: £3.00) Was: ~~£39.00~~

(1 Review)

✓ 2 year warranty

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Frequently bought with this product:

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Chris says
"The Ursa Major FMC eyepiece range offer an immersive 60-65 degree field of view, comfortable eye relief for spectacle wearers, and very good edge of field correction for eyepieces in this price range."

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About this product

Model: ursamajor_fmc_ff_ep_15.5mm

Ursa Major FMC Flatfield Eyepiece 15.5mm

An excellent alternative to regular Plossl or Orthoscopic eyepieces.

Ursa Major FMC Flatfield eyepieces have a five to six-element optical design that provides surprisingly high performance, generous eye relief and a wide apparent field of view from 60 to 65 degrees, depending on the focal length.

Their Flatfield design with fully multicoated, edge-blackened optics reduces field curvature and enhances brightness and contrast.

The black-anodised 1.25" nosepiece has a safety taper (for a secure fit in the focuser) and is threaded to accept 1.25" astronomy filters.

Each Ursa Major FMC Flatfield eyepiece is beautifully finished with a tactile grip and a fold-down rubber eye cup for comfortable viewing.

Supplied with a lens cleaning cloth and an eyepiece bag.

Eyepiece Field of View Simulator

Specifications

Focal Length	Lens Elements/Structure	Apparent Field of View	Eye Relief	Barrel	Coatings	Filter Thread	Field Stop Diameter	Eye Cup
3.5mm	6/4	60°	15mm	1.25"	Fully Multi Coated	M28.5X0.6-3.9	3.9mm	Fold Down
5.5mm	6/4	60°	16mm	1.25"	Fully Multi Coated	M28.5X0.6-3.9	6.4mm	Fold Down
7.5mm	6/4	60°	16mm	1.25"	Fully Multi Coated	M28.5X0.6-3.9	8.6mm	Fold Down
10.5mm	5/4	60°	16mm	1.25"	Fully Multi Coated	M28.5X0.6-3.9	11.7mm	Fold Down
15.5mm	5/3	65°	16mm	1.25"	Fully Multi Coated	M28.5X0.6-3.9	17.4mm	Fold Down
19mm	5/3	65°	20mm	1.25"	Fully Multi Coated	M28.5X0.6-3.9	20.3mm	Fold Down
25mm	5/3	65°	23mm	1.25"	Fully Multi Coated	M28.5X0.6-3.9	25.9mm	Fold Down

Customer reviews

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Excellent value!

26 September 2024 | Stephen

I needed a small, light eyepiece for setting up and occasional observations. The Ursa Major 15.5mm is perfect for the job. I will add a couple more to my collection!