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AAVSO Webinar | Filters & Photometric Transformations

Outreach
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#1 AAVSO_HQ

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Posted 08 May 2024 - 03:59 PM

Join Dr. Brian Kloppenborg, AAVSO's Executive Director, as he traces the journey of light from the stars to our sensors.

 

The one-hour Zoom presentation will explore the impacts atmospheric transmission, telescope optics, and sensor technologies have on stellar photometric data, as well as how photometric filters and transformation processes serve to standardize measurements across observers.

 

Brian will discuss the most common photometric systems used by amateur astronomers, present transmission curves of a variety of commercially available filters, and discuss how you can use transformation to improve the quality of your photometry.

 

Admission: Free

 

When: Saturday, May 11 at 2 PM Eastern

 

Register: Online

 

2024-05-11_Promo.jpg

 

AAVSO Webinars 2024


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#2 William R. Diffin

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Posted 11 May 2024 - 02:36 PM

Nope.

I observe variable stars visually, but seeing that AAVSO observing campaigns often require observations using photoelectric sensors with filters, last year I acquired a Bessel V-filter to use with my Zwo ASI290MM CMOS sensor, to 'transform' my 'flux measurements' in my variable star 'photometry', to use the AAVSO-speak.

 

And now I can report, that after sitting through an hour or so of this webinar, I still have absolutely no idea whatsoever of what I'm supposed to do with my V-filter, and I don't believe that I was supposed to either. I rather think that I'm supposed to believe that I'm too stupid to simply guess by eye how bright a single pixel of light is. And why wouldn't I be? I was stupid enough to pay £150 for a useless little piece of green glass. I guess I'll just give up astronomy altogether now; it's obviously beyond the ken of an uneducated Irish peasant like me.




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