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| Pixel scale = 4.97 arcsec, rotation = +68.94 deg. |
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| Pixel scale = 4.97 arcsec, rotation = +68.94 deg. |
Photometry only for this session. The images were split into R, G, and B channels after full calibration performed. Photometric measurements were completed with the G channel images by APER.pro:
ZP = 21.6362+-0.0268552
aper mag emag
2.5 14.824+-0.090
5.0 13.764+-0.065
7.5 13.206+-0.057
10.0 12.872+-0.054
12.5 12.570+-0.052
15.0 12.376+-0.051
17.5 12.248+-0.052
20.0 12.133+-0.053
22.5 12.050+-0.055
25.0 11.991+-0.058
27.5 11.940+-0.060
30.0 11.962+-0.066 aper (aperture) in pix.
9 comparison stars with color indexes similar to Sun's were taken from catalog APASS. The V band mags were exploited to solve the zero-point of the image. The plot of multiaperture photometry, with $m_\infty$ solved:
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Copyright © Man-To Hui 2013/12/26
Feel free to e-mail me with any doubts or questions.