ALL FILTERS ARE NOT THE SAME! I have a super premium 2" Lumicon H-Beta. This filter has a rated pass through of 95% which is EXCEPTIONAL! Comes in original box. Purchased in July 2003 and have used only a couple of times with my C14. Others posted may be a few dollars cheaper, however, many won't approach the rating on this filter and are generally in the high 80's to low 90's on throughput. I had the dealer search until he found this one with the highest light transmission percentage he had in stock. If you are interested please contact me.
First $160 gets it and I pay 2-3 USPS Priority Shipping.
I prefer Paypal.