Re: Charon

cspratt2001 Nov 3, 2009

What do I enter if I don't have an MPC code (my old code 642 is defunct)? The images came from a remote telescope on the Canary Islands. I'll have to see if they have one.

In the meantime is there a "work around" to not entering an MPC code?

Chris. Spratt
Victoria, BC

--- In guide-user@yahoogroups.com, Bill J Gray <pluto@...> wrote:
>
> Hi Chris,
>
> "... Still needed DOS4GW.EXE file for some reason..."
>
> That's very definitely needed. Charon is a 32-bit DOS
> program, which needs an extender stub. DOS4GW is that stub.
>
> "...Whenever I run Charon on any image (FITS file) I'm
> getting a warning that the sun is up?"
>
> Charon uses the time stored in the FITS image, plus the
> location you specify in its Settings menu, to compute where
> the sun would be at that time as seen from that location.
> Either the FITS time specified in the image is wrong, or
> the MPC code specified in Charon's Settings menu is wrong.
>
> Setting the computer's clock wouldn't change anything;
> it's the time at which the image was taken that matters
> (which should make sense; after all, you may have taken
> your images at local midnight but not gotten around to
> processing them until the next morning... what matters
> isn't when you run the image through Charon, but when
> you took it.)
>
> You mention that the FITS time is UT, so you're probably
> all OK there. My guess would be a wrong MPC station.
>
> -- Bill
>