Manual de instrucciones de Meade TMB Optical TMB-130

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aberrations, and 1/60th wave for sharp (fifth order) aber-
The collimation screws
rations. It is highly unlikely that even the most ardent ob-
TMB Optical TMB-130
(one pair of three)
server can see errors of this small a magnitude, even under
very good seeing conditions (which is when the atmosphere
The collimation screw Thoma a
s M. B ck Signature Signature Signature Signature Signature Series Series Series Series Series
The lens cell
typically presents a 1/4th wave P-V wavefront to the tele-
(

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Your Feather Touch focuser has dual-speed focusing. dealer for an appropriate finder if you do not already have than that – and preferably no more than once a year. If the cleaning should rarely be needed. There are two coarse focusing knobs. The right knob also one that is suitable. front lens surface becomes dusty, smeared, or shows fin- COLLIMATION has a smaller concentric knob with a 10:1 ratio reduction COOL DOWN TIMES gerprints or any other surface build-up, and you find it Your telescope