ORION TELESCOPES & BINOCULARS 8893 Instruction Manual

Field flattener for short refractors

INSTRUCTION MANUAL

Orion Field Flattener

for Short Refractors

#8893

Corporate Offices: 89 Hangar Way, Watsonville

CA 95076 - USA

Toll Free USA & Canada: (800) 447-1001

International: +1(831) 763-7000

A N E M P L O Y E E - O W N E D C O M P A N Y

Customer Support: support@telescope.com

product instruction or any of its contents may be reproduced, copied, modified or

adapted, without the prior written consent of Orion Telescopes & Binoculars.

IN 421 Rev. B 06/19

Table of Contents

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Page 1 INSTRUCTION MANUAL Orion Field Flattener for Short Refractors #8893 Corporate Offices: 89 Hangar Way, Watsonville CA 95076 - USA Toll Free USA & Canada: (800) 447-1001 International: +1(831) 763-7000 A N E M P L O Y E E - O W N E D C O M P A N Y Customer Support: support@telescope.com...
Page 2 Your Orion Field Flattener for Short Refractors corrects for Petzval field curva- ture, which if uncorrected leaves the periphery of the image frame slightly out of focus. This Field Flattener’s doublet optical lens configuration provides the correc- tion necessary to yield sharp stars across the entire image frame – without affect- ing the focal length of the refractor.
Page 3 DSLR camera body Field 2" focuser on T-ring Flattener telescope Figure 2.1. CCD/CMOS Field 2" focuser on Camera Flattener telescope Distance from CCD chip to Field Flattener Flange should be 55mm 55mm “X”mm of additional spacing may be required to achieve 55mm, depending on make and model Figure of camera.
Page 4 Specifications Optics 2-element, fully-multicoated Clear Aperture 38mm Focal Length 55mm Mechanical Profile 51mm Camera Attachment Male M42 and M48 interchangeable adapters Weight 192g (6.8 oz) One-Year Limited Warranty This Orion product is warranted against defects in materials or workmanship for a period of one year from the date of purchase.