WebAstroBin is an image hosting platform and social network for amateur astronomers and astrophotographers. Web29 mrt. 2024 · This works perfect for the RC8 flattening the field and reducing the focal ratio from f/8 to a faster f/6.4. The uncorrected focal length of the telescope is 1625mm. With this correction it is 1300mm. As seen in Image 2 and 6, I had to use all three of the supplied focuser extension rings to achieve focus with my CCD camera.
iOptron Photron 250mm f/8 Ritchey-Chrétien Catadioptric 6113 …
WebOur calculator, at typical seeing of 2-4”, uses the Nyquist formula of 1/2 and the 1/3 to stop stars becoming square so the optimal range is between 0.67” and 2”. (0.67 = 2 / 3, 2 = 4 / 2). In summary, we are using Nyquist as a starting point, with a slight tweak, because we are typically sampling very small, circular, stars. WebPhotron™ by iOptron®, RC truss tube telescopes are sure to meet or exceed even the most discriminating imager or observers expectations. Features. Coma free, chromatic aberration-free, spherical aberration-free optics; 10" (254mm) optical aperture; 2032mm focal length; f/8 focal ratio; phlyctenular conjunctivitis pronunciation
Photron Ritchey-Chretien Carbon Fiber Truss Tube Telescope
WebAt OPT, we are the Telescope Authority, and can help you find anything you need with the help of our experienced and knowledgeable Sales team. Once you receive your products, our friendly Customer Support & Technical Support teams are ready to help you with anything you might need, whether it be a return, exchange, or technical support. WebFirst light with an iOptron Photron 8 inch Ritchey-Chrétien Telescope RC8. ... it still needs a little refinement. But, there are certainly some advantages to the RC design. Acquisition details: Washington, DC area bortle 8/9 Hα = 36 x 300s = 3 hrs R = 30 x 120s = 1hr G = 25 x 120s = 50 mins B = 30 x 120s = 1 hr Total integration = 5hrs 50mins WebThe iOptron Photron RC6 is a Ritchey-Chrétien astrograph with a 150mm primary mirror and a 1370mm focal length. ... The long focal length of iOptron RC telescopes is beneficial for imaging galaxies and planetary nebulae. Both mirrors are 99% reflective and are aluminized and quartz coated. phlyctenulosis icd 10 code