Christian Ambros Jun 19, 2012
>________________________________[Non-text portions of this message have been removed]
> Von: Bill J Gray <pluto@...>
>Gesendet: 17:26 Montag, 18.Juni 2012
>Betreff: Re: [guide-user] Charon not opening, and is obsolete (or not)
>Hi Matt, Clay,
>> "...Charon (recently installed) won't open.I remember this one but its been a few
>>years......There was some fix (deleting some file. May have been a tdf) anyone
>Um. I don't recall this, but you might delete 'charon.pif'. This is a "program
>information file", and I could imagine that it might cause grief.
>If that fails, I'd need more info: what happens when you attempt to run Charon?
>Are you running it from within a DOS box? Do you get any error message(s)?
>It would also be possible to run into trouble with the initial setup. At first,
>horrible as the idea may sound, set the program to run in 640x480, 16-color mode.
>That will at least work (and will look better than it may sound). Once you get
>an image on-screen, you can experiment with the other modes and see which work
>(there are about six available resolutions, as I recall).
>> ...I noticed that Bill describes Charon as 'nearly obsolete'.
>True. I stopped most work on it largely because I was very impressed with
>the work by Bob Denny (PinPoint), Herbert Raab (Astrometrica), and Brian Warner
>(Canopus). To keep up with the pack, I'd have had to move to something
>truly Windows-based, after which I figured I'd just be duplicating what these
>three gentlemen had done anyway. Not to mention that each had pushed things in
>some directions I'd not managed: fully automated plate solving, track-and-stack,
>and photometry, respectively.
>Adding to this, the source code has become somewhat horrible. That source
>code is posted on my Web site. I should probably remove it; any potential
>employer who saw it would immediately decide that its author should never be
>allowed near a computer again. The problem is that it started out with one set
>of goals, and then more goals were added, and more features, and... sort of
>as if one built a bicycle, and then decided it should be able to go on water
>as well, and then added the ability to fly. If I did further work on astrometry
>or photometry software, I could almost certainly use some components from Charon,
>but it would be well to start out mostly from scratch.
>Every now and then, something has come up that has almost tempted me to get
>cracking on the program again. In particular, a while back, I read a paper
>about astrometry.net. This project does something I thought about doing about
>two decades ago, but didn't think would probably work: it can take any image
>and pattern-match and plate solve it, without needing to know where it is in
>the sky or even what the image scale is. (Charon, as you know, needs at least
>an approximate image scale and you have to give it an approximate plate center,
>and it runs somewhat faster if you can give it an approximate rotation angle.)
>This could lead to a super-duper "digital finder": point your scope anywhere
>in the sky, maybe not even bothering to align the scope; take an image; and
>Charon would figure out where in the sky you were. Which would be pretty amazing!
>But that's what astrometry.net does. Unfortunately, it requires broadband
>access; you upload your images and get the pattern match results returned to you.