TS Optics TSWA 20mm 70° 1.25″ Eyepiece

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TS Optics WA 20mm 70° 1.25″ Eyepiece

Article No.: TSWA20
Manufactured by: TS Optics
Shipping weight: 0.082 kg

Our price: 73.70 €

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This product is available in the following variants:
TS Optics WA 20mm 70° 1.25″ Eyepiece	73.70 €
TS Optics WA 32mm 70° 2″ Eyepiece	139.45 €
Eyepiece TS Optics WA 12mm 60° 1,25″	143.55 €

TS Optics TSWA 20mm 70° 1.25″ Eyepiece

The TSWA series from TS Optics fills a practical gap between classic Plössl eyepieces and bulky ultra-wide-angle designs. A five-element optical construction delivers a noticeably wide field of view - without the size penalty. The 1.25″ models are similar in size to a standard Plössl, yet offer a substantially larger field of view.

What makes the TSWA 20mm a smart choice

The TSWA20 has a focal length of 20mm, making it the right choice when you need moderate magnification, a bright image, and a generous overview. It works well with most telescopes and is particularly rewarding for wide-field observation. Star clusters, extended nebulae, and constellation surveys all look impressive through this eyepiece.

Shorter focal length TSWA models are popular among planetary observers, where the image sharpness matches the Plössl standard but the field of view is considerably wider. The TSWA20 excels in the opposite direction - deep-sky observation. High-quality multi-layer coatings and blackened lens edges minimise light scatter and maintain a dark sky background, which is exactly what brings out fine nebula detail.

Versatile and easy to use

The TSWA20 works without compromise with a Barlow lens. The uncritical eye relief makes focusing straightforward on virtually any telescope. You can use it equally well with a compact refractor or a large reflector.

Who is the TSWA20 for

The TS Optics TSWA20 eyepiece is a practical, optically well-balanced choice for anyone who wants more from their telescope than a classic Plössl can offer - without stepping up to expensive, oversized ultra-wide-angle models.

Technical specifications

Parameter	Value
Brand	TS Optics
Series	TSWA
Model	TSWA20
Focal length	20mm
Field of view	70°
Barrel diameter	1.25″
Optical construction	5 elements
Coatings	Multi-layer anti-reflection coating, blackened lens edges
Barlow lens compatible	Yes

What can you observe with the TSWA20

Open and globular star clusters
Extended nebulae and emission nebulae
Large deep-sky objects - the Andromeda Galaxy, the Pleiades, and similar targets
Wide constellation surveys and Milky Way sweeping
General overview observations at moderate magnification