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William Optics RedCat 71 Apo - 71 mm f/4.9 Flatfield Refractor for Astrophotography

Name: William Optics RedCat 71 Apo - 71 mm f/4.9 Flatfield Refractor for Astrophotography
Brand: William Optics
SKU: T-C-71RD
Price: 1425 EUR

William offers with the REDCAT71 Astrograph a very well corrected telescope for astrophotography up to full frame format.

Aperture 71 mm / Focal length 350 mm / Focal ratio f/4.9

Petzval design with chromatic aberration free FPL53 objective (4 elements in 3 groups)

Very well corrected and illuminated image field up to full frame format - the corrector is built in - no more adapter battle necessary

Camera connection via M48 male thread (suitable adapters are available) - working distance 55 mm

360° rotation of the camera for the right display window

Focusing via precise helical focuser like telephoto lenses

Tilting option for individual adjustment of the camera sensor to the telescope

Flexible dovetail bar at the base (long version), suitable for Vixen style and Arca-Swiss saddle plates, in addition with 1/4" female photo tripod thread

Nylon carrying bag and Bahtinov mask for astrophotography are included in delivery

Manufacturer: William Optics

Product number: T-C-71RD

EUR 1.425,00

incl. 19 % VAT (DE)

The VAT indicated refers to that applicable in Germany. After logging in, the VAT amount is adjusted to the applicable VAT of the stored delivery country. Therefore, the final price may vary accordingly.

excl. 9.95 € shipping costs (DE)

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William Optics RedCat 71 Apo - 71 mm f/4.9 Flatfield Refractor for Astrophotography

William offers with the REDCAT71 Astrograph a very well corrected telescope for astrophotography up to full frame format.

Aperture 71 mm / Focal length 350 mm / Focal ratio f/4.9

Petzval design with chromatic aberration free FPL53 objective (4 elements in 3 groups)

Very well corrected and illuminated image field up to full frame format - the corrector is built in - no more adapter battle necessary

Camera connection via M48 male thread (suitable adapters are available) - working distance 55 mm

360° rotation of the camera for the right display window

Focusing via precise helical focuser like telephoto lenses

Tilting option for individual adjustment of the camera sensor to the telescope

Flexible dovetail bar at the base (long version), suitable for Vixen style and Arca-Swiss saddle plates, in addition with 1/4" female photo tripod thread

Nylon carrying bag and Bahtinov mask for astrophotography are included in delivery

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William Optics REDCAT 71 mm f/4.9 Astrograph

The William RecdCat 51 is a successful model and has found its following. Now William offers the much more powerful RedCat with 71 mm aperture. The refractor is again designed for mobile astrophotography and is carried by smaller mounts or by stable startrackers.

The apo is aimed at astrophotographers and nature photographers who are looking for a portable and powerful manual telephoto lens. The focusing is like with a telephoto lens via a knurled ring. The Pezval design offers a very good correction and illumination for all cameras up to full frame format.

Photography with the RedCat 71 apo:

Astrophotography: With 348 mm focal length and fast f/4.9, short exposure times are possible. The working distance of 55 mm allows the use of all common astro cameras, system cameras and DSLR/SLR cameras. The use of nebula filters is also possible due to the 2" filter thread integrated in the helical focuser. Included is a Bahtinov mask for astrophotography. The mask helps with focusing and is integrated in the objective cap.

Countryside photography and animal photography: The RedCat 71 is also perfect for, for example, photographing animals. The slip-proof helical focuser allows focusing within seconds. The image quality will impress you. A photo tripod is necessary for use.

Astrophotographic results obtained with this telescope on Astrobin

Here you can find some astrophotographs made with this telescope model: Link to Astrobin

Video of the "first light"

There is a video presentation on YouTube: Please click here! (external link)

Aperture:	71 mm
Focal length:	350 mm
Focal ratio:	f/4.9
Optical design:	4-element Petzval design with FPL53 element
Illuminated and corrected field of view:	>43 mm
Dew shield:	Integrated, outer diameter 103 mm
Bahtinov mask:	Yes
Mount connection:	21 cm long Vixen and Arca-Swiss style dovetail bar with photo thread
Tube length with dew shield:	435 mm
Weight:	6.2 lbs / 2.8 kg (OTA only), 8.2 lbs / 3.7 kg (OTA with ring, dovetail and saddle)

RedCat 71 apo

M48 camera connector

Bahtinov mask

Dust caps for objective and eyepiece

Tube rings

Universal dovetail bar with photo tripod connection

Nylon carrying bag with foam inside

Astrophotographic results obtained with this telescope on Astrobin

Here you can find some astrophotographs made with this telescope model: Link to Astrobin

Manufacturer / Importeur:	Teleskop-Service Ransburg GmnH
Street:	Von-Myra-Str. 8
ZIP / City:	85599 Parsdorf
Country:	Germany
Telefon number:	+49 89 99228750
Email:	info@teleskop-service.de
Website:	www.teleskop-express.de