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If I ever get some clear sky I should make some experiments on both my SVX80T and 10"F4 newt. I currently have an Astronomik L-RGB set plus HA and Oii and a clear that I bought at the time I bought the HA (To be able to focus through the clear and be closely parfocal with the HA)
I should pick a nice couple of nights and do say 60 X 60s subs through both the clear and lum with both scopes to get a good average HFR for each filter on both systems. Then when Fedex finally decide to deliver my Sii filter (Instead of sending it to the wrong city and leaving it there until I started making phone calls, then leaving it there for another week so far, I am about to tell them to hold it there as I will be passing the depot that they reckon has it this Wednesday!) I can make a choice between witch of the lum of clear to leave in the wheel. If neither show a significant increase in HFR and no reflection issues with the clear I should leave that one in to get whatever extra light I can.
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