Add to comparison |  |  |  |  |  |  |
|---|---|---|---|---|---|---|
| Skywatcher 1309EQ2 | Arsenal GSO Dob 10 | Celestron Omni XLT 102 | Sigeta Volans 70/400 | Skywatcher 909AZ3 | Celestron Omni XLT 127 | |
from $235.00 | from $765.00 | Compare prices 1 | from $61.96 | from $219.00 | from $730.00 | |
| TOP sellers | ||||||
| Design | mirror (reflectors) | mirror (reflectors) | lens (refractors) | lens (refractors) | lens (refractors) | mirror lens |
| Mount type | equatorial (EQ2) | Dobsonian | equatorial | altazimuth | azimuth (AZ3) | equatorial |
Specs | ||||||
| Lens diameter | 130 mm | 254 mm | 102 mm | 70 mm | 90 mm | 127 mm |
| Focal length | 900 mm | 1250 mm | 1000 mm | 400 mm | 900 mm | 1250 mm |
| Max. useful magnification | 260 x | 508 x | 204 x | 140 x | 180 x | 254 x |
| Max. resolution magnification | 195 x | 381 x | 153 x | 105 x | 135 x | 190 x |
| Min. magnification | 19 x | 36 x | 15 x | 10 x | 13 x | 18 x |
| Aperture | 1/6.9 | 1/4.9 | 1/9.8 | 1/5.7 | 1/10 | 1/9.8 |
| Penetrating power | 13.1 зв.вел | 14.5 зв.вел | 12.5 зв.вел | 11.7 зв.вел | 12.3 зв.вел | 13 зв.вел |
| Resolution (Dawes) | 0.88 arc.sec | 0.45 arc.sec | 1.14 arc.sec | 1.63 arc.sec | 1.27 arc.sec | 0.91 arc.sec |
| Resolution (Rayleigh) | 1.08 arc.sec | 0.55 arc.sec | 1.37 arc.sec | 2 arc.sec | 1.1 arc.sec | |
More features | ||||||
| Finder | optic | optic | optic | optic | optic | optic |
| Focuser | rack | Crayford | rack | rack | rack | rack |
| Eyepieces | 25 mm, 10 mm | 30 mm, 9 mm | 25 mm (40x) | 25 mm, 6 mm | 25 mm (50x) | |
| Eyepiece bore diameter | 1.25 " | 2 " | 2 " | 1.25 " | 1.25 " | 1.25 " |
| Lens Barlow | 2 х | 2 х | ||||
| Relay lens | 1.5 х | |||||
| Enlightenment coating |  | |  | | | |
| Mirror | parabolic | spherical | ||||
| Diagonal mirror | | | | | | |
| Active cooling | | | | | | |
General | ||||||
| Tube mount | fixing rings | fixing rings | fixing plate | |||
| Tube length | 84 cm | 121 cm | 100 cm | 46 cm | 87 cm | |
| Tripod height | 39 cm | |||||
| Total weight | 13 kg | 27.8 kg | 24.5 kg | 3 kg | 12 kg | |
| Added to E-Catalog | march 2015 | march 2015 | march 2015 | march 2015 | october 2015 | march 2015 |
