Meade Image Processing Specifications download pdf (Page 34)

24 AUTOSTAR CCD PHOTOMETRY

Note: This will set the Reference magnitude for the Comparison

star. This action must be performed with each image. The other

star measurements will now produce magnitude values referenced

to the Comparison star Reference magnitude that was entered. This

will create a new text file in the folder called ImageInfo.txt. All

the data that is acquired from the images will be logged into that

file. Do not move or rename the file until all of the data (for all the

filters) has been entered.

3.3.2 Aperture Diameter, Annulus, and

Centering Box Size Settings

The Aperture Diameter, Annulus, and Centering Box Size can

be changed, but unless you want to experiment or know what you

re doing, it is best to leave these values at their default settings of

8, 15, and 15, respectively.

3.3.3 Raw Magnitude Determination

6. Draw a box around the first Program star. A widow will pop up.

Select Determine Magnitude. (Fig. 3-9.)

Figure 3-9 . Select Determine Magnitude.

7. A Magnitude Determination window will be displayed,

indicating the selected Program star magnitude referenced to the

Comparison star, along with other data. (Fig. 3-10.)

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Meade Image Processing Specifications Page 34