The Guan Sheng Optical (GSO) 12" f/8 Carbon Truss Ritchey-Chrétien is an excellent telescope for deep sky astrophotography. This bundle includes the Prima Luce Lab ESATTO 3", a highly accurate robotic microfocuser with a weight capacity of 8kg an incredible resolution of 0.04 microns per step.
Note: you will need to purchase an additional camera adapter for the ESATTO 3" to suit your equipment.
GSO Ritchey-Chretien 304mm f/8 with truss carbon fiber tube and ESATTO 3" and the following optional accessories: EAGLE with PLUS dovetail clamp installed above the telescope.
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 flatness of 1/12th wave or better and have highly reflective dieletric coatings ensuring 95% reflectivity.
The telescope is made with a rigid carbon fibre truss tube and features computer-optimized baffles to eliminate stray light.
Note: Ritchey-Chrétien telescopes are not intended for visual use.
|Focal length||2432 mm|
|Linear obstruction||150 mm|
|Corrected field||30 mm (65 mm with optional corrector)|
|Backfocus distance||288 mm from rear cell|
|Tube outer diameter||439 mm|
|Tube length||864 mm without focuser|