Quote:
Originally Posted by TareqPhoto
If this will give me nice results then i will definitely buy another Achro telescope with 600mm or longer, so with the price of good APO i can have 2 or 3 achro telescopes and modify them.
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I think if you already have a relatively cheap acromat refractor, A UV blocking filter can vastly improve performance. But I'm not sure that I would buy one for astrophotography. The ED80 is an excellent scope - much nicer than the 100mm F5 acro, and the ED80's come up second hand for very reasonable prices. The ED100 F9 is also very sharp on planets - perhaps a bit slow for photography. If you are after something around 600mm, keep an eye out for a s/h ED80. They're very good value for money.