Thread: Filters for Mars Conjunction???
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Old 02-05-2014, 03:01 PM
Renato1 (Renato)
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Join Date: Mar 2014
Location: Frankston South
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The red No.23A filter on smaller telescopes and the red No.25 filter on larger telescopes are what I use on Mars, and I have no other use for them on other planets. They easily show dark markings and the polar ice cap.
Regards,
Renato
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