Quote:
Originally Posted by marki
Hmmm 3 1/2 inches at F6 vs 11 inches at F2 ...bit like taking a knife to a gun fight me thinks    .
Mark |
Not at all. We're talking about details on an OSC vs. a Mono right?
ED80 + QHY8 at prime focus:
206.265/600mm * 7.8um = 2.68 seconds of arc per pixel.
C11/Hyperstar + QHY8 at prime focus:
206.265/504mm * 7.8um =3.19 seconds of arc per pixel.
Yes you collect more light with 11" aperture and 500mm of FL but image scale being similar a star will still cover the same number of pixels in both rigs. Point is the QHY8 OSC even debayered is still looking pretty good compared to your QHY9 shots. Exposure time or photons collected being irrelevant.
