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William Optics Flattener for Fluorostar 91

Name: William Optics Flattener for Fluorostar 91
Brand: William Optics
SKU: P-Flat-91
Price: 764 EUR

The flattener levels the field of the Fluorostar 91 for use with full-frame cameras and shortens the focal length to 427 mm.

Designed for the Fluorostar 91

Four-lens system for very good imaging properties

Shortening factor 0.79/aperture ratio f/4.66 for short exposure times

43.2 mm image circle, suitable for full-frame cameras

Backfocus adjustable from 55 to 56.18 mm

Manufacturer: William Optics

Product number: P-Flat-91

EUR 764,00

incl. 19 % VAT (DE)

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excl. 6.95 € shipping costs (DE)

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William Optics Flattener for Fluorostar 91

The flattener levels the field of the Fluorostar 91 for use with full-frame cameras and shortens the focal length to 427 mm.

Designed for the Fluorostar 91

Four-lens system for very good imaging properties

Shortening factor 0.79/aperture ratio f/4.66 for short exposure times

43.2 mm image circle, suitable for full-frame cameras

Backfocus adjustable from 55 to 56.18 mm

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William Optics Flattener/Reducer for Fluorostar 91

This field flattener and focal reducer was specially developed for the Fluorostar 91. Only high-quality glass is used for the four-lens system in order to maintain the excellent image quality of the telescope.
The flattener/reducer shortens the focal length to 427 mm and improves the focal ratio to f/4.66. The image circle of 43.2 mm diameter allows the use of full-frame cameras.
Thanks to the integrated adjusting mechanism, the working distance can be precisely set in the range from 55 to 56.18 mm.

Reduction factor:	0.79
Resulting focal ratio:	f/4.66
Image circle:	43.2 mm
Backfocus:	55-56.18 mm (adjustable)
Weight:	1140 g
Length:	105.5 mm Flattener/Reducer

Flattener/Reducer

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