[Message Prev][Message Next][Thread Prev][Thread Next][Message Index][Thread Index]
[vsnet-chat 2635] Re: TmzV85
- Date: Tue, 1 Feb 2000 01:41:29 +0900 (JST)
- To: vsnet-chat
- From: Taichi Kato <tkato>
- Subject: [vsnet-chat 2635] Re: TmzV85
- Sender: owner-vsnet-chat@kusastro.kyoto-u.ac.jp
Re: [vsnet-chat 2634] Re: TmzV85
Dear Arne,
> I presume the units on the y-axis are a scaled 'magnitude'.
The y-axis represents the flux relative to the comparison star.
(The scale is linear).
> Another technique that I have not seen, is to stack
> images at equal phase and then extract. I bet you will
> get better S/N than is shown in your plot.
The main difficulties may be different orientations of images. One
must interpolate something (though I have done before), which may introduce
some uncertainty. In the present method of PSF-based extraction, we
don't have to care about the individual image orientation, and only
have to treat with relative counts.
Regards,
Taichi Kato
Return to Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp