Meade Image Processing Spécifications télécharger pdf (Page 17)

AUTOSTAR CCD PHOTOMETRY 7

Note: There will be one Master Dark Frame for each exposure 1.0

second or greater (for the times used). You cannot take Dark

Frames for exposure times less than 1.0 second; and indeed they

normally are not needed for such short exposures. Filters do not

enter in for Dark Frames. Since Bias data is part of the Dark

Frame, there is no need to take separate Bias Frames. The filter

selected does not matter. There may be some light leakage through

the filter wheel (or slider), so it is best to do this after it is

completely dark. (If necessary, say if the Moon is very bright,

cover the filters with a dark cloth.)

3. Click the Start button. A Take Darks window will pop up,

telling you to cover the telescope objective. (Fig. 2-5.)

Figure 2-5. Take Darks Window.

4. Cover the front of the telescope and click the OK button.

5. The computer will take the Dark Frames automatically. When

completed, a Dark Frames Complete window will pop up,

reminding you to uncover the telescope. (Fig. 2-6.)

Figure 2-6. Dark Frames Complete Window.

6. Uncover the telescope and click the OK button.

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Meade Image Processing Spécifications Page 17