518Re: [vsx-dis] Suitable filters to use
- Jun 10, 2013Hi David,
LRGB filters are difficult to transform to the standard photometric system, especially for red stars such as this one. It would be better to use e.g. Johnson-Cousins filters.
As this forum has been inactive and most questions are dealt with on one of the AAVSO forums <http://www.aavso.org/forum>, I suggest to ask your questions there. There are many more experienced photometrists available to give you more complete advice.
From: David Kennedy <dken@...>
Sent: Sunday, June 9, 2013 3:07 PM
Subject: [vsx-dis] Suitable filters to use
I’m a new member to the group, joining after noticing a possible variable
star in my CCD images of the nebula NGC6559. Through the VSX website I’ve
found out the star is a suspected variable listed as NSV 10242. I’ve made
observations of the star on 3 nights over the past 3.5 weeks and using MaxIm DL
have measured that it’s decreasing in brightness. However, I’ve been
collecting data using the filters I use for imaging (LRGB and Ha
Astronomik filters) and I would like to know if useful photometric data can been
gained with these or do I need to use different filters instead? Can
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