By Brian Warner
Tools for newbie astronomers who desire to transcend CCD imaging and step into ‘serious’ technology. The textual content bargains ideas for amassing, studying, and publishing information, and describes joint tasks during which amateurs and scholars can participate. Readers discover ways to realize and keep away from universal mistakes in amassing photometry information, with exact examples for research. comprises stories of obtainable software program, with monitor pictures and invaluable tips.
Read Online or Download A Practical Guide to Lightcurve Photometry and Analysis (Patrick Moore's Practical Astronomy Series) PDF
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Additional info for A Practical Guide to Lightcurve Photometry and Analysis (Patrick Moore's Practical Astronomy Series)
Richard Miles has developed a variation of this method using blue–red star pairs culled from the Hipparcos catalog. org). It will not be discussed in detail here, but it is worth investigating. You will find a set of blue–red stars listed in one of the appendices. The Photometry Primer 31 The advantage of the Modified Hardie method is that you can quickly determine the extinction values and nightly zero-points. If the process is repeated once or twice more during the night, you can determine the stability of the values or, at least, find a good average value for sets of observations sandwiched in between runs on the standard fields.
If filters are being used, this must be done for each filter. There are different theories as to where is the best place to aim your scope. Try near the zenith on the opposite side of the meridian from the sun. Usually the 40 The Photometry Primer scope is moved slightly between images. This allows any stars in the images to be removed when the raw images are median-combined to make the master flat. The problem with this method is that the time between when the sky is dark enough to avoid saturation and when too many stars appear in the image can be very short – often only a few minutes.
The challenge for the more industrious is to do the comparisons in real time and have the system alert the observer if something is found or – better yet – automatically start a series of images to get as much data on the supernova as possible. 9 Summary Any one of the projects mentioned above can provide enough work to keep any individual or even a group of observers busy for years. Mix and match these or other projects as you like. The main thing is that you will be doing very real science with your telescope and camera.