CCAF - Instruments

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Instruments

MAIN TELESCOPE

Bought in 1985 from doct. Baur of Chions (PN), (Chaonis Observatory), is the main instrument of CCAF.
At its Newton focus we have a CCD ST-6, that we use for astrometry. By turning the secondary mirror we have the possibility to visual observe with traditional eyepieces. Removing the secondary we can instead place a film holder at direct focus.
Actually pointing is made manually with the help of digital readouts from optical encoders on both axes (32 arcsec/tic).

Optical scheme	Newton-Cassegrain reflector
Aperture	400 mm (15.7")
Focal lenght	1800 mm (70.8")(New) - 7000 mm (275.5")(Cas)
Focal ratio	f/4.5 (New) - f/17 (Cas)
Mirrors	Marcon - S. Donà di Piave (VE)
Mounting	equatorial
Drivers	Pellegrini - S. Daniele del Fr. UD
Optical encoders	±32 arcsec accuracy
CCD	SBIG ST-6
Film holder	42 mm (1.6") dia - 80 arcmin field

GUIDE TELESCOPE

Used to guide the main telescope and for planetary observations.
Eyepiece holder can move on both axes and holds a CCD ST-4, with flip-mirror, for automatic guide on stars or on comets.

Optical scheme	refractor
Aperture	150 mm (5.9")
Focal lenght	2250 mm (88.5")
Focal ratio	f/15
Lenses	Zen - Mestre (VE)
CCD	SBIG ST-4 + flip mirror


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