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William Optics Field Flattener - Adjustable Flat73A For Z73

SKU : WO-P-FLAT73A

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Product Details

  • An Adjustable Flat73A Flattener for your Z73 Camera:

    The M63 Threads goes into your focuser.

     

    Adjustment instructions by pictures below:

     

     William Optics Adjustable Flat73A For Z73-ADJ1

    William Optics Adjustable Flat73A For Z73-ADJ2

    William Optics Adjustable Flat73A For Z73-ADJ3

     

    Manufacturer's Note: Requires a 48 mm Camera T-mount to connect to your camera.

     

     

  • specifications

    Free ShippingYes
    Weight0.705 lb

Product Reviews

Customer Reviews
5.0 Based on 3 Reviews
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  • William Optic
WD
12/03/2021
Wade D.
United States United States

Excellent Flattener

This is a wonderful edition to a Zenithstar 73 and essential to astrophotography. Just be aware, that the distance of the sensor to the the front of the flattener is absolutely crucial. Go to the William Optic website and get the technical drawing to set the distance. Get your optical train to have 55mm backfocus, and then use the adjustment on the flattener to make up the difference based on the technical drawing's given value for your scope (its for the Z73 and Z61). I thought I could make this up with focus, so was very frustrated at first. However, the good folks at OPT set me straight and I absolutely love this device!

OPT Telescopes William Optics Field Flattener - Adjustable Flat73A For Z73 Review
AM
06/30/2021
ALBERT M.
United States United States

WO 73 PROBLEM SOLVED

After trying 3 different WO flatteners for the WO 73 the one that works for me was the Flat73A- not a reducer so you get 400 + FL and also able to rotate field like the WO 73R

RH
03/30/2021
Robert H.
United States United States

Matches my Zenithstar 73

Like the build quality. Haven't had first light yet, but I anticipate good performance.