2吋 HR 彗差修正鏡 牛頓鏡用 (HRCC02-00)

My outer-edge stars look like actual stars now instead of little seagulls, and the coma correction held up even at f/4.5. I was worried about adding another piece of glass to the train, but the image stayed crisp with no visible halos. First clear night with it and I re-processed two old data sets j

The stars across my entire frame are now razor sharp, even at f/4. This little corrector threaded right onto my 2" focuser without any extra adapters needed. Definitely worth the investment for anyone shooting with a fast Newtonian.

I was worried about coma in my fast Newtonian, but this corrector really sharpens stars across the whole frame. The threaded connection screws on smoothly and holds alignment perfectly. My wide-field shots finally look crisp from edge to edge.