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Focusing
Focusing will only take a few seconds with the Bahtinov Mask. With the mask installed:
1. Center a moderately bright star in the telescope.
2. Using your camera (or eyepiece), image/observe the star. Cameras with a live focus or
video mode are useful, but taking continuous short exposures will also work for this pur-
pose.
Out of Focus
Figure 3. Focused diffraction pattern
3. Focus the telescope until you see a symmetrical diffraction pattern as shown in Figure 3.
Don't forget to remove the mask once you have reached focus!
Use of Optional L-brackets for model #608022
#608022 was designed to fit 12" ACF and Schmidt-Cassegrain telescopes, but it also in-
cludes 3 L-brackets which may be used to fit different telescopes for a slightly wider range
of apertures. Unthread the Locking Nuts from the Attachment Pegs, then place the L-brack-
et mounting hole between the Attachment Pegs and Bahtinov Mask and reattach the Lock-
ing Nuts (Figure 4). Adjust the distancing as needed so that the L-brackets fit on the outside
diameter of the telescope (Figure 5).
Figure 4. Installing L-bracket
Meade Limited Warranty
Every Meade accessory is warranted by Meade Instruments Corp ("Meade") to be free of defects in materials
and workmanship for a period of ONE YEAR from the date of original purchase in the U.S.A. Meade will
repair or replace a product, or part thereof, found by Meade to be defective, provided the defective part is
returned to Meade, freight-prepaid, with proof of purchase. This warranty applies to the original purchaser
only and is non-transferable. Meade products purchased outside North America are not included in this war-
ranty, but are covered under separate warranties issued by Meade international distributors. RGA Number
Required: Prior to the return of any product or part, a Return Goods Authorization (RGA) number must be
obtained from Meade by writing, or by calling (800) 626-3233. Each returned part or product must include a
written statement detailing the nature of the claimed defect, as well as the owner's name, address, and phone
number. This warranty is not valid in cases where the product has been abused or mishandled, where unau-
thorized repairs have been attempted or performed, or where depreciation of the product is due to normal
wear-and-tear. Meade specifically disclaims special, indirect, or consequential damages or lost profit which
may result from a breach of this warranty. Any implied warranties which cannot be disclaimed are hereby
limited to a term of one year from the date of original retail purchase. This warranty gives you specific rights.
You may have other rights which vary from state to state. Meade reserves the right to change product spec-
ifications or to discontinue products without notice. This warranty supersedes all previous Meade product
warranties.
Meade Instruments Corp.
27 Hubble
Irvine, CA 92618
800-626-3233
www.meade.com
Focused
Figure 5. Properly installed L-bracket
20190815 REV 0
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