The telescopes from left to right are:
1. 102mm Orion Apex Maksutov-Cassegrain. f.l. 1300mm f/12.75
2. 5 Inch Celestron Schmidt-Cassegrain. f.l. 1250mm f/10.0
3. 5 Inch Celestron Schmidt-Cassegrain with f/6.3 Compressor / field flattener. f.l. 787mm f/6.3
4. 80mm Orion ED apo refractor plus Astro-Physics 2x barlow. f.l. 1200mm f/15
5. 80mm Orion ED apo refractor without barlow f.l. 600mm f/7.5
6. 90mm Meade ETX Maksutov-Cassegrain. f.l. 1242mm f/13.8