[Aavso-photometry] Cluster Photometry

[Eric Broens]

Hi Arne,

Isn't NGC6811 a candidate? 
I don't know if you could observe it on a sufficient number of
photometric nights from SRO during the campaign.
If so wouldn't these observations be suitable for determining the
transformation coefficients?


Best Regards,
Eric


************************************
VVS Werkgroep Veranderlijke Sterren
http://www.vvs.be/wg/wvs/

Eric Broens
Wateringstraat 143
B-2400 Mol
BELGIUM

e-mail: Eric.Broens at skynet.be
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> -----Original Message-----
> From: aavso-photometry-bounces at mira.aavso.org 
> [mailto:aavso-photometry-bounces at mira.aavso.org] On Behalf Of 
> Arne Henden
> Sent: donderdag 24 mei 2007 22:31
> To: Derek C Breit
> Cc: Aavso-photometry at mira.aavso.org
> Subject: Re: [Aavso-photometry] Cluster Photometry
> 
> 
> On 5/24/07, Derek C Breit <breit_ideas at hotmail.com> wrote:
> > Is there an equivalent set of calibrated photometry, such as this
> > http://binaries.boulder.swri.edu/binaries/fields/m67.html
> > for other objects in other areas of the sky???
> >
> There are other calibrated areas; the question is whether they
> are "standards" quality.  For example, Peter Stetson has a 
> whole set of
> clusters:
> http://cadcwww.hia.nrc.ca/standards/
> Other standardized clusters include NGC7790 and M11.  However,
> unless you know what you are doing, I'd suggest keeping with
> Landolt standards if possible.  There are several fields, such
> as those near SA110_503, where multiple stars will fit within
> a CCD field of view.
> Arne
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