c_j_bolt
M57, First Light with QHY163C, wide angle
24x120 second subframes,
Total exposure 48 minutes.
Quite a lot of high level cloud, light wind and not grey seeing. My FWHM values are quite a lot worse than the comparable image with the 350D. But still, it's a first light picture!
Quite a learning curve going from the DSLR to the dedicated Astro camera. Quite glad I went OSC before Mono... although this camera exposes the CA of the achromat a lot more than the DSLR seemed to (perhaps because the CA hid amongst the chromatic noise with the DSLR).
Imaging:
Skywatcher Evostar 150,
QHY163C at -10degrees, gain 10, Astronomik CLS filter.
Guiding:
unbranded 50mm, 190mm focal length, finder-guider,
Orion SSAG.
All on
Skywatcher HEQ5 Pro
Captured using SharpCap. Guided using PHD2.
Stacked and processed in DSS, Fitswork and Gimp.
17th July 2017
Cambridge, UK
M57, First Light with QHY163C, wide angle
24x120 second subframes,
Total exposure 48 minutes.
Quite a lot of high level cloud, light wind and not grey seeing. My FWHM values are quite a lot worse than the comparable image with the 350D. But still, it's a first light picture!
Quite a learning curve going from the DSLR to the dedicated Astro camera. Quite glad I went OSC before Mono... although this camera exposes the CA of the achromat a lot more than the DSLR seemed to (perhaps because the CA hid amongst the chromatic noise with the DSLR).
Imaging:
Skywatcher Evostar 150,
QHY163C at -10degrees, gain 10, Astronomik CLS filter.
Guiding:
unbranded 50mm, 190mm focal length, finder-guider,
Orion SSAG.
All on
Skywatcher HEQ5 Pro
Captured using SharpCap. Guided using PHD2.
Stacked and processed in DSS, Fitswork and Gimp.
17th July 2017
Cambridge, UK