by Anthony Ayiomamitis
The large-amplitude short-period pulsating star CY Aqr is one of the fastest variables known with a period of 87.9 minutes and which involves a delta mag ranging from 0.74 (V) to 0.88 (B) magnitudes during this very brief time interval. Further details from the General Variable Star Search Gateway are available
here whereas an AAVSO finder chart is available
here.
Technical Details:
Date: Aug 25-26, 2010 @ 22:15 - 03:57 UT+3
Location: Athens, Greece (38.2997° N, 23.7430° E)
Equipment: AP 160 f/7.5 StarFire EDF, AP 1200GTO GEM, SBIG ST-10XME, SBIG CFW10, Baader IR Pass filter
Integrations: IR @ 310x60 sec, 2x2 binning, 2.34"/pixel, -10.0d C
Further details are available here.