2176Re: [ccd-newastro] Lunar Images
- May 2, 2001Good evening Ron:
You were certainly right about the focus. The turbulence in the atmosphere
made focus extremely difficult. Certainly, the most challenging focus
effort I have ever undertaken.
I did manage to acquire about 30 images however. After I do some
rudimentary processing, I'll post them to the group files tomorrow night.
From: "Ron Wodaski" <ronw@...>
> The ST-237 will be good for the job; it has exposures down to amillisecond,
> I believe. You should have to down about that low to avoid over-exposure.If
> you need more attenuation, a moon filter, or a rotating polarizing filter,as
> will do the job effectively. If you are close, then your built-in blue
> filter should give you a little extra bit of attenuation.
> Focus is challenging. If there is any turbulence, it will drive you crazy
> you try to focus. <g> Try to find the rough range of best focus, and thengo
> for the middle of that. It would be interesting to try CCDSoft's @Focus on
> the moon.
> If you have it, don't forget to set the lunar tracking rate on your mount.
- << Previous post in topic