> BULGARIAN ACADEMY OF SCIENCE ASTRONOMY CALENDAR FOR 2016
You can find my last DSLR Astrophotography article in Bulgarian at page 76. I am sharing my last findings for this publication, Specially written for the Institute of Astronomy. My research was made during the last year in searching of should I need to upgrade my camera and witch one would be the best for me. After writing the article I do upgrade with Pentax k-5 – the best camera from Pentax. It was a great improvement.
Even the new K-3 has lower http://www.dxomark.com/ score and thus I do not believe that the higher number of Mpix will show much improvement as most of the current lenses are best around 12 Mpix resolution.
Article could be found at: http://nao-rozhen.org/astrocalendar/2016/Astronomical_calendar_2016.pdf
If you have used DeepSky stacker to stack RAW files, maybe you have notice that the resulting image is poor of color saturation. This is because it has a higher number of bits then the display could show.
Last test from passed night put an end of the questions witch is better CCD or CMOS. My old CCD K-m fall back compared to CMOS K-5.
HDR stands from High Dynamic Range. In short it is the number of tones that compose the image. The larger it is, the best capability we have to see details in the bright and dark regions of a scene.
Witch is better. Stack or long exposure? It depends…
NGC 7000, South America nebula in Cygnus, taken by me from NAO Rozhen. 2 shots composed by 45 frames @ 30s, ISO 51200 with SW 200pds and Pentax k-5. Same processing with DeepSky Stacker and LightRoom.