Compact powerhouse for astrophotography

The William Optics AP 91/448 91 BlackCat is perfect for astrophotographers and nature photographers.It combines compact size with impressive optical performance.The Petzval design with FPL53 and FPL51 glass delivers a color-clean, sharp image all the way to the edges of full-frame sensors.

Fast and clear

With a 91 mm lens and f/4.9 capture a lot of light.That means short exposures and sharp details, even for faint stars.The field of view of more than 55 mm gives room for large sensors and creative compositions.

Internal focusing

The telescope used WIFD (Internal Focus Design)..That keeps your focus stable, even with heavy cameras.The spiral focus ring works smoothly and precisely.The included rotator and tilt flange correct tilt and make sure your image stays sharp everywhere.

Flexible mounting

The included dovetail rod works with Arca-Swiss, Vixen standard or via photo wire.This makes it easy to place the telescope on virtually any mount or tripod.

Ready to use

Included in delivery is a protective bag and a Bahtinov mask included.You can get right into astrophotography or nature photography.The durable black finish from William Optics looks great and stays beautiful for years.

Specifications

Optics

Focuser

Mount

Included accessories

General