William Optics RedCat 91/448 APO WIFD Red OTA

 3.190,00

William Optics AP 91/448 91 comes with a protective nylon carrying case, a Bahtinov mask integrated into the objective cap, M48 and M54 camera adapters and a dovetail rod suitable for Arca-Swiss and Losmandy clamps.  

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William Optics RedCat 91/448 APO WIFD Red OTA
William Optics RedCat 91/448 APO WIFD Red OTA
 3.190,00

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Compact and powerful RedCat for photography

The William Optics AP 91/448 91 RedCat is perfect for astrophotography and nature photography.It combines compact size with high optical quality.It Petzval design with FPL53 and FPL51 glass gives a color-clean, sharp image across the entire field.Your sensor sees everything, even up to full-frame size.

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 lets you create creative compositions without distortion.

Internal focusing

The WIFD focus works internally, so heavy cameras don't disturb anything.Turn the spiral ring and focus precisely.The included rotator and tilt flange Keep your image sharp everywhere.

Flexible mounting

The included dovetail rod works with Arca-Swiss, Vixen stand or photo wire.So you easily attach the telescope to any tripod or astronomical mount.

Ready to use

Included in delivery is a tote bag and a Bahtinov mask included.You can start night or nature photography right away.The durable red finish From William Optics stays beautiful for years

Specifications

Optics

FeatureDescription
TypeRefractor
DesignApochromat
Aperture (mm)91
Focal length (mm)448
Focal Ratio (f/)4,9
Resolution1,52″
Limit value (mag)12,3
Light output170
Max. useful magnification182×
Tube weight (kg)6,3
Tube length (mm)556
Tube materialAluminum
CoatingMultiple
Tube constructionFull tube
Lens DesignQuadruplet
Free opening (mm)55

Focuser

FeatureDescription
DesignHelical (internal)
Tilt adapterYes
Camera connectionM48 / M54
RotatableYes

Mount

FeatureDescription
DesignOTA
Type of mountWithout

Included accessories

SectionDescription
Dew capYes
Transport bagYes
DovetailYes
CorrectorIntegrated
Focusing aidBahtinov mask
Oculai adapter1,25″ & 2″

General

FeatureDescription
SeriesCat
ColorRed
Observation goalsAstrophotography, Moon & Planets, Nature observation, Nebulae & galaxies
SunNo (only with suitable sunscreens)
Recommended forAdvanced
Observatory useNo

Additional information

Telescope Electronics

Tube only (OTA - no electronics).

Mounting Type

OTA (without mount)

Optics Design

Achromat

Optics Focal length

300 - 600 mm

Eyepiece mount

2 inches

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