Sumários
17 Outubro 2023, 09:00
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André Maria da Silva Dias Moitinho de Almeida
:: Bias correction (cont)
- Combinations of 100 bias images. Analysis of the combined super master bias
- Application of Zero correction (bias) to images with an exposure time greater than 0.
17 Outubro 2023, 08:00
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André Maria da Silva Dias Moitinho de Almeida
- CMOS detector definition
- CMOS detector principles of operation
- Performance of modern CMOS detectors
- Examples of CMOS detectors
12 Outubro 2023, 11:30
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André Maria da Silva Dias Moitinho de Almeida
::Instruments
- Photometers and cameras
- Spectrographs
:Beyond basic CCD use
- Mosaics
- "Binning". Reasons, advantages and disadvantages. Differences in load transfer / Acquisition / reading
Further reading
Chap 5 of McLean
10 Outubro 2023, 09:00
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André Maria da Silva Dias Moitinho de Almeida
- Explanation of the astropy CCDPROC task.
- Explanation of different image combination algorithms, including outlier rejection.
:: Image processing:
- Definition of the geometry of the overscan area and the data area.
- Calculation and correction of the overscan level.
- Trimming the overscan section
- Examination of processed images
- Combination of bias images into a master bias.
- Comparison of the combined image with the individual ones (noise reduction).
10 Outubro 2023, 08:00
•
André Maria da Silva Dias Moitinho de Almeida
:: Instrumental signatures and other effects on CCD images (cont)
- Dark current
- Flat fields
- Fringing
:: Sources of noise
- Reading noise
- Dark current
- Photonic ("shot noise")
- Non-uniformity of pixels