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Semi-APO-Filter
Just got a Explore Scientific AR-102 so I decided to purchase this Baader Semi APO filter. I got the 2 to fit on the diaginal and I must say, it was a really good purchase. Filters are good and bad. Some work, others not so much, but this one does what it was designed for. I have yet to observe the Moon but Jupiter was spot on with no fringe coloration. Even bright stars were not an issue. I just forgot the filter was even there. And that is good.