SW250
ASTRO.IAPS.INSTITUTE  ·  Bulgaria

Meshtitsa Observatory

Pernik, Bulgaria  ·  Variable Star Photometry & Imaging

42.67° N   23.00° E Class 4 Bortle
Sky-Watcher Explorer PDS 250mm Newtonian
Instrument & Setup
Telescope
Sky-Watcher Explorer PDS
0.25-m F/4.8 Newtonian
Mount
Sky-Watcher EQ6-R Pro
Camera
ZWO ASI533MM Pro CMOS
Pixel: 3.76 µm
Field of View
32′ × 32′
0.64 – 1.3 arcsec/px
Photometric Filters
UBVR Baader Bessel UBVR
Narrowband Filters
HαOIII Astronomik 12 nm
Control Software
INDIGO Astronomy
Sky Conditions — Live
CloudWatcher · real-time readout
Observatory Tools
Photometry · Web App
PyTransformApplier
Apply BV / BVR / UBV / UBVR photometric transformation coefficients to AAVSO Extended Format observations. Generates a light curve and exports a submission-ready file.
›
Planning · Web App
PyAAVSOPlanner
Compute altitude curves, rise/set times and target window for any variable star. Fetches the latest AAVSO observations and plots twilight, astronomical darkness and culmination.
›