|
Hi Shaun, You're comparing apples with oranges. It's not surprising
that your 8" Dob gave views as sharp as the C11 given that the C11's
optics are 15 yrs old, and may be not quite as sparkling as they once were. Also, newer SCTs have better coatings. Secondly, SCTs have a larger central obstruction, which affects the image quality slightly.
If you had viewed some fainter objects you would have seen the
benefit of the extra aperture immediately, given that the 11" has
almost double the light grasp of the 8". Finally, if you had looked
carefully at some craters on the moon you would have discovered that you could resolve smaller ones with the 11". However, whether the 11"
SCT is worth 20x the 8" Dob comes down to personal preference
or requirements.
raymo
|