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ND0, ND1 - Select autoguider neutral density filter

Select either a neutral density of 0 or 1.

Adam:> ND0

Selects a neutral density of 0.

Adam:> ND1

Selects a neutral density of 1.

The thickness is chosen automatically on the basis of the CCD filter thickness. Filters can also be chosen by number if you want to override the default (cf. AGND)