--- In C14@y..., kberna1376@a... wrote:
I have used the C14-G11 combo for a couple of years. The G11 with
the C14 is very good visually, and very portable, but is difficult
for CCD work. I have had some good resuts with it in Fastar mode
at
f2.1. It is also OK using a 3.3 reducer. But even then you need
very still wind conditions. I have not had good results at longer
focal lengths. Also, I have heard comments that the stepper motors
introduce minute vibrations that reduce CCD resolution.
Ken
I have a CM1400 and use it for CCD work with the ST7E camera. I
originally used it with the CI700 mount that was part of the original
sales package. I was always disappointed with the results. I
understand the CI700 is similiar to the G11, but perhaps not as good.
I finally lucked out and found an AP1200GTO mount and life has been
wonderful since.
Here is a CCD benchmark between the CI700 and the AP1200:
CI700 picture:
ebula+17March+2001.jpg&.src=ph&.view=t&.hires=t
AP1200GTO picture:
ebula+30May2001.jpg&.src=ph&.view=t&.hires=t
Both images were made using the CM1400 and the ST7E running at the
F/11 focal ratio. The CI700 shot had minimal mass in the system,
while the AP1200GTO shot had a TV101 piggybacked atop the CM1400.
The mount made all the difference in the world. The CI700 shot was
the best I ever got with it. I sold it to a visual-only fellow that
is quite happy with it.
rdc
