Orion 5745 Instruction Manual

2" variable field flattener for short refractors

instruction Manual

orion

2" Variable Field

Flattener for short refractors

#5745

Providing Exceptional Consumer Optical Products Since 1975

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contents may be reproduced, copied, modified or adapted, without the

prior written consent of Orion Telescopes & Binoculars.

IN 567 04/16

Table of Contents

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Page 1 Copyright © 2016 Orion Telescopes & Binoculars All Rights Reserved. No part of this product instruction or any of its contents may be reproduced, copied, modified or adapted, without the prior written consent of Orion Telescopes & Binoculars. IN 567 04/16...
Page 2 The Orion 2” Variable Field Flattener (VFF) for Short Refractors flattens the focal plane for astro-imaging without affecting the focal length of the telescope. It is designed to work with refractors of 400mm to 660mm focal length and f/5 to f/6 focal ratios.
Page 3 the VFF to add 11mm of length. Start at the 55mm mark on the millimeter scale and rotate the housing to the 66mm mark. Then turn the locking thumbscrew clockwise until it’s tight. You’re done! No extension rings needed. And if needed you can make fine adjustments to the VFF’s length to “dial in”...
Page 4 During this warranty period Orion Telescopes & Binoculars will repair or replace, at Orion’s option, any warranted instrument that proves to be defective, provided it is returned postage paid. Proof of purchase (such as a copy of the original receipt) is required.