45EDII F5.0 covers a plenty of image field. As far as I know, probably this is the shortest focal length as telescope in the market which fully covers full frame sensor. It is not as fast as 71FL F3.9. But it achieves flatter illumination entire full frame sensor. Also pinpoint stars corner to corner. So this optics should be suitable for stitching frame to frame.

Combine3ss45EDII F5.0 + 6DH + LPS-P2, non-cropped, 16 x 6 minutes at ISO1600

No flat applied. I forgot taking HEUIBII filter with me, shame!! I will try the same target with HEUIBII.

45edminiThis is exactly same system used last weekend

I like this performance very much.


~ by tedishikawa on November 6, 2013.

2 Responses to “BORG 45EDII”

  1. Beautiful wide field Ted, wonderful colors too. Pinpoint stars with the little 45ED, very nice indeed.

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