<HTML>Jane B. Sellers wrote:
>
> Dave. In response to your question about "atmospheric
> extinction" if you mean did the Lodestar program I used
> (2.02) take into account refraction, the answer is yes, one
> could enable or disable this feature. I always used it.
> Others have asked about my eclipse program, and although I
> wrote another letter to Jeff, it somehow never got sent or
> posted (my inexperience with posting I would guess).
> Stellaron developed a program, Eclipse4.Exe just for my use.
> This was not a program that showed the sky, but rather
> supplied just data on eclipses. I would provide a set time
> frame...(say 100 years) and a specific geographical location
> and leave the program overnight. The next morning, if I was
> lucky I would have a print out of any major solar eclipses
> that were predicted over that location.
Hi Jane, thanks for the informative reply. I actually meant did the program take into account the progressive dimming of stars the closer to the horizon (at 1 degree above the horizon it is 7 magnitudes) due to the atmosphere.
Best Regards,
Dave
P.S. aren't you glad modern software can work things out a lot quicker!</HTML>
