
Date: 13 Nov 96 20:14:29 EST
From: A C Pickwick <100316.3710@CompuServe.COM>
To: Richard West <rwest@eso.org>
Subject: Observing Proposal
Message-ID: <961114011428_100316.3710_JHF55-1@CompuServe.COM>

Dear Richard,

Please find below an observing proposal for the Dutch Telescope.

Regards,  Alan.

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Binary Star System 66 Cet

To obtain images of the well documented binary star system, 66 Cet, using a
range of filters.
To process the data and compare it to the published data.
To use the data to make a colour image of the system.

Manchester Grammar School, Sixth Form Astronomy

02hrs 12.8min, -02deg 24min  (J2000)  66 Cet also known as ADS 1703

Binary 5.7 and 7.5

Filter 634 - U  with ND4 filter.  Exposure 10 seconds
Filter 419 - B with ND4 filter.  Exposure 10 seconds
Filter 420 - V with ND4 filter.  Exposure 10 seconds
Filter 421 - R with ND4 filter.  Exposure 10 seconds
Only ND4 filter.  Exposure 10 seconds
If possible, a set of exposures on a nearby photometric standard star of about
6th magnitude using the same five settings.
A representative flat field for the TEK CCD
The exposures should produce maximum pixels with 1000s to 10000s of electrons
and so be above the noise but well below saturation.

To attempt to apply the physics of blackbody radiation to the two stars, F8 and
G4.
To attempt to fit the results to the Planck radiation curves and to consider how
to make a true colour image.
Bright stars have been chosen as there is some scattered moonlight to contend
with.
The separation of the pair is 16.5 sec, so the centres of the images are about
37 pixels apart.
With reasonable seeing, the stellar images should be a few pixels in extent.

Manchester, UK         10 November 1996

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