TrueRC™ Astrographs - RC10C Gallery

Astrograph:  Deep Sky RC10C Ritchey-Chrétien (internal field flattener)
Focal Ratio:  f/7.3
Focal Length:  1854mm, 73"
Camera:  Apogee Alta U16M
Array Size:  4098 pixels x 4098 pixels
Pixel Size:  9um x 9um
Imaging Diagonal:  52mm, 2", 1.6°
Astrophotographer:  Chris Hetlage, copyright 2008, all rights reserved


Cocoon Nebula



Dumbbell Nebula



Rosette Nebula



Cone Nebula



Lagoon Nebula





Astrograph:  Deep Sky RC10C Ritchey-Chrétien (internal field flattener)
Focal Ratio:  f/7.3
Focal Length:  1854mm, 73"
Camera:  SBIG ST-11000M
Array Size:  4008 pixels x 2672 pixels
Pixel Size:  9um x 9um
Imaging Diagonal:  43mm, 1.7", 1.3°
Astrophotographer:  Chris Hetlage, copyright 2008, all rights reserved


Reflection Nebula



Whirlpool Galaxy





The following image was taken with an RC10 Deep Sky Ritchey-Chrétien astrograph. The Ritchey-Chrétien design is free of coma and spherical aberration producing excellent results for all but the largest CCD cameras. The image below was taken with a camera containing a monster 2" diagonal CCD chip showing the effects of wide-field astigmatism and field curvature. Smaller cameras would not show these effects as illustrated below. But for those using these really big cameras, the RC10C Ritchey-Chrétien astrograph with its built-in internal corrector/field-flattener solves the problem.

Astrograph:  Deep Sky RC10 Ritchey-Chrétien (no field flattener)
Focal Ratio:  f/7.3
Focal Length:  1863mm, 73"
Camera:  Apogee Alta U16M
Array Size:  4098 pixels x 4098 pixels
Pixel Size:  9um x 9um
Imaging Diagonal:  52mm, 2", 1.6°
Astrophotographer:  Rich Simons, copyright 2008, all rights reserved


M35 with no corrector/field flattener - Inner squares are 2048x2048 and 1024x1024