Meade Deep Sky Imager, Руководство пользователя, Страница: 36 / 58

3. Select a value for the Avg Exp box. This is the number of
exposures that are averaged together to create each composite
Dark Frame exposure. Typically, set this value to 10.
4. Click on the Setting menu (25). The Dark Frames directory field
displays. The Dark Frames will be saved to this directory. You
may change the directory if you wish.
5. Click the Start button (14). A message displays that tells you to
cover up your telescope or Deep Sky Imager camera. Replacing
the lens cap on your telescope is sufficient.
The program erases all the old Dark Frames files in the directory
if “Del existing darks” is checked. It then takes and saves the new Dark Frames series. When all the Frames
are taken, “Done” displays in the Status Display (24). Notice the Histogram display; it will reflect the Dark
Frames that are being imaged.
6. Select an exposure in the Exposure Controls (2). The Dark Frames feature is used with longer exposures,
so your exposure time should typically be longer than 1 second.
7. Check the Dark Sub check box (6). The Dark Frames feature is automated, so Dark Frames will
automatically be applied to any pictures you now take.
8. Remove the lens cap from your telescope or uncover your Deep Sky Imager camera. Begin taking
pictures as previously described in “Start Taking Pictures.” (See page 12 for more information.) The Dark
Frames feature is automated, so Dark Frames will automatically be applied to any pictures you now take.
Note that if you are taking longer exposures, better results will be achieved with black and white (mono)
images: Check the Mono check box (4)
[not available for the Black and White model] .
Dark Frames 2
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