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RE: new additions to TASS home page
- To: firstname.lastname@example.org
- Subject: RE: new additions to TASS home page
- From: "Gutzwiller, Michael" <email@example.com>
- Date: Mon, 5 Jan 1998 16:51:39 -0500
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- Resent-Date: Mon, 5 Jan 1998 17:27:15 -0500
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With our cuts very loose at this stage the star program could very
easily create a series of candidates from a satellite or airplane track.
These could be eliminated if we tighten down on the "sum ratio limit"
parameter. The closer this value is to 1.0 the more a star candidate
has to look like a star. Alternatively I could enhance star to output
the sum ratio value so we can cut after the fact in the database. The
sum ratio value is the ratio of the PSF fitted ADU sum to the PSF
aperture ADU sum.
From: Tom Droege [SMTP:email@example.com]
Sent: Monday, January 05, 1998 4:11 PM
To: firstname.lastname@example.org; Stupendous Man
Subject: Re: new additions to TASS home page
Very nice!! There is even more data than you indicated. Going
0-1 RA and -.2 to +.7 in Decl. gives a nice diagonal track.
> I urge people to try this out: make a V-band chart of
>(0.0 < RA < 0.5) and (0.0 < Dec < 0.5),
>and look at chart: there's clearly an object which moves
>field! It turns out to take only a few minutes to move all
>way across a 3-degree swath, so I suspect that it's a satellite
>of some kind.
Huh! Does this mean that Mike's program looked at the track and
many points??? Is this just one data field, or the combination
of a lot of
measurements from different locations?? How can you tell that
took a few minutes to move all the way across the 3 degree
Seeems like all the measurements have one time stamp??? I don't
OK, I looked (by hand) at a couple of points on the track and
came from G1A_0745. To hard to track them all down when a
can do it.
Hmmm! If a track is turned into many points is this good or
At 06:54 PM 1/2/98 -0500, you wrote:
> It's now possible to create a VERY simple star chart from
>in the TASS Database. Remember, the current information is