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Back focus is rather small (63.8 mm) which implies the usage of very thin filter wheel.įigure 3a: Spot diagram for 60-cm, f/3.3 optical system. Stellar spots are thus much smaller than CCD pixels across the majority According to spot diagrams, we obtain stellar images of less than 5 m diameter inside theįield radius of 20 mm and less than 20 m diameter at the field radius of 50 mm. Other aberrations over the wavelength range 400nm to 700 nm.
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Motorized focusing device enables automatic refocusing of the system at any time during the observing session.ĭeltagraph is a wide field optical system and consists of a 600 mm, f/3 parabolic mirror and 3 lens Wynne corrector which produce images free of coma and This will help to keep the distance between the mirror and coma corrector as stable as possible, to avoid overnight focus changes. Carbon tubes were introduced for temperature stability of tubeĪssembly structure. The overall weight of a working telescope is thus only 500 kg. Stainless steel and aluminum were used on optical tube assembly and many other delicate parts for minimum While keeping the overall weight to minimum. We used sheet metal to obtain the structure of a sufficient strength, free of flexure and vibrations, Telescope design is compact and of low weight. In that way, we avoided possible construction errors and reduced the manufacturing time and overall costs.ģ-D computer model of a 60-cm telescope mount.ģ-D computer model of primary focus assembly.įigure 2: Computer models of a 60-cm Deltagraph. These enable carefull design of all parts with telescope final properties being well known in advance.
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The telescope projects were made with help of advanced computer programs that support 3-D design and structural analysis as The telescope was assembled and tested in aīefore the final installation at Crni Vrh Observatory. The project funding has been covered in large by group members, The Planetary Society Shoemaker Grant 2000, and by sponsors.
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Motor electronics were designed by observatory group, based on experience of our previous projects. Optical components were made and tested at LOMO and delivered by Astrooptik Company.Īll other components, the telescope mount, optical tube, filter wheel, flaps and servo It may be operated either locally or remotely over the internet. The 60-cm Deltagraph is custom made, advanced technology, wide-field imaging system, designed for sky survey applications.Īll functions (pointing, imaging, focusing, filters exchange) are controlled by a single computer program and the system may Requirements, we built a 60-cm, f/3.3 Deltagraph (Deltagraph is a commercial name for the wide field optical system, designed byįigure 1: 60-cm Cichocki Sky Survey Telescope at Crni Vrh Observatory Were not sufficient anymore to be competitive both for follow-up and asteroid discovery. Existing telescopes at Crni Vrh Observatory
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Extensive sky coverage by professional robotic surveysĪre producing asteroid discoveries at ever-deeper magnitudes. PIKA asteroid and comet search program with a larger and more effective imaging system. The 60-cm Cichocki Sky Survey Telescope was built to succeed the Scanning Along the Great Declination Circles Telescope is automatically parked and the observatory roof closed.Ĭalibrations (pointing and tracking, optics collimation) Was introduced in 2005 for more effective and user friendly telescope targeting.Īll-sky camera, the overnight weather situation isĬontinuously monitored by a watchdog program. Custom made internet interface to a observation scheduler Since 2004, all observations are performed in an
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We developed dedicated hardware and software solutions that enable us real time remoteĬontrol of the observatory and the telescope. Very few existing modern telescope of this class are able to use this advanced technique. The latter technique is much more effective and preferred for scanning the sky forĪsteroid and comet search under the framework of PIKA In consecutive single shot or drift-scan along the great declination circles mode. It is aĭesigned for wide range of astronomical observations, including search for minor planets and comets,Įxplosions of supernovae in distant galaxies and detection of opticalĪfterglows of Gamma Ray Bursts - probably the most energetic events in the universe. Program) is an internet robotic facility, designed and built during the periodĢ000-2002 and put in regular operation in March 2003. The 60-cm Cichocki telescope (named after Bruno Chichocki, an important benefactor to our Crni Vrh Observatory - 60-cm Cichocki Sky Survey Telescope