AAVSO Finder charts

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AAVSO Finder charts

• Janet A. Mattei
• AAVSO

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Finder charts N

• Road maps for navigating in the sky
• Essential for locating objects

Longitude - Right ascension (RA)
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Finder charts for variable stars

• The AAVSO has finder charts (charts in short) for
  over 5000 variable stars of all types
• All charts are accessible and downloadable from
  the AAVSO website at
• http//www.aavso.org/observing/charts
• and on
• Variable Star Charts CD

Latitude
Longitude - Right ascension (RA)
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Observing with AAVSO charts

• Lets try observing
• RR Bootes

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Finder chart for Bootis region
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scale
These types of charts are for telescopes with
even number of optical surfaces, such as
Newtonian telescopes
Comparison star
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Reversed Chart - for telescopes with odd
number of optical surfaces, when using star
diagonals, such as refractors and
Schmidt-Cassegrain type telescopes (Celestron
and Meades)
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scale
Another scale Indicator ½ degree (diameter
of the Moon)
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Reversed chart
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Special charts for CCD observing with B,V,R,I
filters
Colums indicate precisely measured magnitudes of
comparison stars with B,V,R,I filters