The Guan Sheng Optical (GSO) 6" f/9 Ritchey-Chrétien is an excellent telescope for deep sky astrophotography of galaxies and planetary nebulae. This bundle includes the Prima Luce Lab SESTO SENSO 2, a highly accurate robotic focus motor with an incredible resolution of 0.7 microns per step.
GSO Ritchey-Chretien 152mm f/9 with SESTO SENSO 2and the following optional accessories: EAGLE with PLUS dovetail clamp and guide scope installed above the telescope, ECCO environmental module.
The Guan Sheng Optical RC's are excellent astrographs with solid build quality and precisely-figured optical surfaces. The concave hyperbolic primary and convex secondary mirrors deliver excellent correction across the field. The low thermal expansion BK7 mirrors have a surface correction of 1/12th Lambda PV or better and have highly reflective dielectric coatings ensuring 99% reflectivity.
The telescope is made with a rigid steel tube and features computer-optimized baffles to eliminate stray light.
Specifications
| Optical design | Ritchey-Chrétien |
|---|---|
| Diameter | 152.4 mm |
| Focal length | 1370 mm |
| Focal ratio | f/9 |
| Linear obstruction | 76 mm |
| Corrected field | 32 mm |
| Backfocus distance | 159 mm with standard focuser, 254 mm from rear cell |
| Weight | 5.4 kg |
| Tube outer diameter | 191 mm |
| Tube length | 500 mm without focuser |
| SKU | GSRC6+SESTO |
Items included
- 2 x 1" M90 male to M90 female extension tubes
- 1 x 2" M90 male to M90 female extension tube
For all orders exceeding a value of 100USD shipping is offered for free.
Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.
Otherwise, standard shipping charges apply. Check out our delivery Terms & Conditions for more details.
