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I used a blue #80A filter to observe Jupiter at 4.00am on the 5th, 6th and 7th January and it made all the difference in the colour , contrast and details of the planet.
Jupiter ( and Mars ) was at 25 - 30 deg with average seeing conditions and the filter worked a treat for me
Magnification was at 208x
In my limited experience it’s hit and miss with filters you just have to try them.Some work well and some don’t improve the view at all.
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