Telescopes at the Astronomical Observatory on Kolonica Saddle

I used many telescopes for both visual and CCD observing. Following is the list of the equipment of AO on Kolonica Saddle dedicated to variable stars at the time when I abandoned the institution in 2025.

Telescopes for CCD and CMOS photometry

Spectrograph NOU-T on C14 telescope	Main	Guide	Finder
Aperture/ Focal length [mm]	356 / 3000 with reducer	off whole	80 / 325
CCD, binning	ATIK-460ex, 2×2	Starlight Express SXVR-H9, 1×1	MI G1-2000
Chip size [px], pixel size [μm]	1374 x 1099, 9.08 x 9.08	1392 x 1040, 6.45 x 6.45	1628 x 1236, 4.4 x 4.4
Scale [arcsec/px]	–	0.9	2.79
FOV [arcmin]	–	10.3 x 7.7	75.7 x 57.5
Resolution power	11000	–
Mount	German equatorial	Celestron Edge HD CGE Pro 1400
Typical observing program	Novae	Symbiotics stars

Spectrograph UVEX on RC16 telescope	Main	Guide	Simultaneous photometry
Aperture/ Focal length [mm]	408 / 3200	off slit	280 / 1500
CCD, binning	ZWO ASI 183 MM Pro, 1×1	ZWO ASI 174 MM Mini, 2×2	MI G2-1600, 1×1
Chip size [px], pixel size [μm]	5496 x 1000, 2.4 x 2.4	968×608, 11.72 x 11.72	1536 x 1024, 9 x 9
Scale [arcsec/px]	–	0.76	1.24
FOV [arcmin]	–	12.2 x 7.7	31.6 x 21.1
Filters			B, V, Rc, Ic, Clear
Resolution power	1500	–
Mount	Alt – acimuthal	10 Micron AZ2000 DT	dual mount
Typical observing program	Novae	Symbiotics stars

Visual observations

Skywatcher 14”, Newton GoTo	Main	Finder
Aperture/ Focal length [mm]	405 / 1860	50 / 300
Eyepiece Explore scientific focal length/ FOV	24 mm/ 68°	–
Eyepiece Explore scientific focal length/ FOV	6.7 mm/ 82°	–
Mount	Dobson	with GoTo
Typical observing program	Dwarf novae outbursts
Binocular APM
Aperture x magnification	100 x 30
Mount	Alt-acimuthal

Telescopes used in other locations

Csere telescope Zeiss made	Main	Guide – Zeiss photolense
Aperture/ Focal length [mm]	600 / 2400	180 / 1000
CCD, binning	Atik 383L+, 2×2	Lodestar, 1×1
Chip size [px], pixel size [μm]	1677 x 1264, 10.8 x 10.8	762×580, 8.6 x 8.6
Scale [arcsec/px]	0.93	1.77
FOV [arcmin]	25.95 x 19.56	22.53 x 17.15
Readout noise [e-] / gain [e- per ADU]	7 / 0.41
Filters	U, B, V, Rc, Ic, Clear	–
German equatorial mount	Zeiss made, semi-aed	No meridian flip
Typical observing program	Cataclysmic variables	I operate the telescope of the Hlohovec observatory remotely

Meade LightBridge 14”, Newton with coma corrector	Main	Finder	Typical observing program
Aperture/ Focal length [mm]	405 / 1860	50 / 300	Cataclysmic variables – monitoring for outbursts
Eyepiece Celestron focal length/ FOV	26 mm/ 80°	–
Eyepiece Televue focal length/ FOV	8 mm/ 72°	–
Mount	Dobson	–
Semiregular and symbiotic variables – long-term light curves	Somet	Artillery	Typical observing program
Aperture x magnification	100 x 25	60 x 12	Semiregular and symbiotic variables – long term light curves
Mount	Alt-acimuthal	–	–

Chermelin 30cm Newtonian	Main	Finder	Typical observing program
Aperture/ Focal length [mm]	300 / 1500	50 / 300	Cataclysmic variables – visual monitoring for outbursts
ZOOM Eyepiece focal length	24 – 8 mm	–	The majority of visual estimates were done with this instrument in the observatory in Podbiel village
Mount	Dobson	–

Kamenicky 20cm Newtonian”	Main	Finder	Typical observing program
Aperture/ Focal length [mm]	200 / 1400	20 / 150	Semiregular and Symbiotics + brighter Cataclysmic variables
Televue eyepieces focal length	26 and 8 mm	–	The first telescope used for regular variable star observing. First light in 1999. Transported to Madeira in 2020.
Mount	Dobson	–

Zennox Newtonian	Main	Finder	Typical observing program
Aperture/ Focal length [mm]	76 / 700	10 / 150	Semiregular and Symbiotics
Televue Eyepiece focal length/FOV	20 mm/ 52°	–	The first telescope used in Madeira. First light in 2018.
Mount	Dobson	–