[Aavso-photometry] Mentoring for your 0.5 meter Cass
Steven Orlando
sorlando at sorlando.com
Wed Jan 2 17:39:34 EST 2008
Hello Greg,
I have Brian Warner's book and software as well.
I read the pdf files. How do you load AAVSO data and edit them?
Can you please provide a link or tell me where in the DOCS I should look?
Steve
----- Original Message -----
From: "Greg Crawford" <gc at nelsonbay.com>
To: <aavso-photometry at mira.aavso.org>
Sent: Wednesday, January 02, 2008 4:00 PM
Subject: Re: [Aavso-photometry] Mentoring for your 0.5 meter Cass
> One book I have found extremely helpful, while waiting for the next
> edition of
> "Astronomical Photometry", is Brian D. Warner's book, "A Practical Guide
> to
> Lightcurve Photometry and Analysis 2nd edition". See here:
> http://www.minorplanetobserver.com/pgbook/PracticalGuide.htm
>
> Interestingly, it has a review by the *other* Brian Warner, the South
> African
> variable star specialist. (Brian D. Warner is an American.)
>
> Also, Brian D. Warner's latest "Canopus" software, version 9.4.0.2 makes
> standardised photometry of variable stars *so* easy. Calculation of
> transformation coefficients is done internally in the program. Also, when
> a
> variable star field with AAVSO data is measured, it can load the AAVSO
> data on
> the comparison stars, (or allow you to edit them if newer values have
> become
> available), and internally calculate all elements of the standard
> transformation
> equations to enable you to out put measurements in the new AAVSO format.
>
> Greg Crawford
>
>
>
> -----Original Message-----
> From: aavso-photometry-bounces at mira.aavso.org
> [mailto:aavso-photometry-bounces at mira.aavso.org] On Behalf Of arne
> Sent: Wednesday, 2 January 2008 2:49 AM
> To: aavso-photometry at mira.aavso.org
> Subject: Re: [Aavso-photometry] Mentoring for your 0.5 meter Cass
>
> Derek C Breit wrote:
>
>>>>As for a camera, that is an issue.. The observatory and I both own the
>>
>> same camera, an ST 7.. Mine I am 99% sure is an ABG camera. It is
>> possible
>> the observatory's camera is an NABG model.. I am pretty convinced that I
>> can
>> learn the ropes with it, but will quickly reach the limits of the
>> precision
>> capable with this camera.. This is after rereading Tom Krajci's
>> ST 7 Linearity Testing page..
>>
>> So I posted this to the group to get an answer or two about whether to
>> get
>> "Astronomical Photometry" now or wait for an updated version (This might
>> also be something we already have but have not found yet), and can an ST7
>> ABG camera be used to do photometry to 0.01m or better??
>>
> While progress continues to be made on the new book, you should consider
> another book for your immediate needs. Astronomical Photometry is good
> for UBV photometry and shows you in complete examples the process of
> differential photometry, extinction and all-sky photometry. Many of
> the more recent books do an excellent job of explaining CCD cameras and
> how to calibrate them, but do not give good explanations of scientific
> photometry. So I can't recommend a single book right now, but many
> combinations of texts will do the job. The AIP Handbook should probably
> be your starting point, and you should spend the cash to upgrade to
> version 2.
>
> I think I will take the time to place some book reviews online for
> everyone - let's see if I can get this done in January (Yet Another
> New Year's Resolution!).
> Arne
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