> BULGARIAN ACADEMY OF SCIENCE ASTRONOMY CALENDAR FOR 2016

  • Posted on: 14 February 2019
  • By: tihomiry

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

http://www.deepskywatch.com/deep-sky-hunter-atlas.html This is an amazing resource. Detailed atlas of all the sky with NGC and IC objects.

Reading a new product that claims to be 100x time more powerful then conventional telescope, I realise that this is just an astrograph with a digital camera that is doing stacked images and show them trought eyepiece or App.

I am so impressed with the K5 ability to quickly gather signal from nebulas (Quantum efficiency) and galaxies, so I decide to take one more K5 and to remove the IR-cut Filter of the old one.

Recently I got one very good lens the Asahi Takumar 135mm 1:2.5. This is fast telephoto lens and from my point of view a good lens should be with aperture from 1:1,2 to 1:2,8.

Moon at 45% illumination and 70x magnification. With aperture of 200mm,14,1 stops dynamic range, color depth of 23.7 bits at this image there are slight color variation on the moon surface that reveals it’s structure.

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