Quote:
Originally Posted by AstroJunk
I've just installed an achingly expensive Antares 3.5 1/30th wave into my 20" dob. I was rather reluctant to do it given the exchange rate (over 700 AUD), but after Qld Astrofest this year - it was the best possible investment I could have made. In the 13 years of ownership of the scope I have not seen brighter and sharper views. The helix nebula was simply jaw dropping.
You can't beat perfection, and that doesn't come cheap.
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I’m curious about your original secondary, who was it made by and what was its claimed optical spec? What holder do you use?
