lunedì 13 aprile 2015

Deep Sky-M81 13/4/2015

Celestron C11 at f/6.3(i think less than f/6.3 cause the distance between focal reducer Celestron f/6.3  and the Off Axis Guide T2 Canon adapter) + Off Axis Guide Orion Deluxe + Canon EOS 1200D unmodded as a imaging camera + Astronomik CLS CCD 2", stacked 10 frames of 5 minutes of exposure + 4 dark with no flatfield and bias, unguided imaging only PEC of the CGEM Celestron mount, Emanuele Baldani

Below here is a single sub as it appears(RAW CR2) with CLS filter in front of DSLR: