Archiv rubriky: Technika, recenze

At the end of year 2012 I have sold my Losmandy G-11 mount because I knew that one day I will have to adopt a Newtonian system as my primary astrograph (and I did not want to overweight the perfectly … Celý příspěvek →

I have been recently asked on a comment on performance of 71FL vs. 77EDII (because I am known for owning all Borg lenses and reducers). I have found this quick-test image somewhere on my hard-drive. It’s from November 2011 so … Celý příspěvek →

You think it’s a rare case? Nope! In summer 2012 I got a new Atik 460 EXM with really misaligned CCD chip. How I did I find that? I have some really perfectly collimated optics (setups) so unlike of 99% … Celý příspěvek →

OK, it won’t be actually the first light, but a brief report from a third night (third use case) when I finally managed to handle the setup (cables etc.) and master polar alignment of this new friction drive mount made … Celý příspěvek →

QE is the ability of a detector to turn incoming photons into useful output. It’s computed as detected photons divided by incoming photons. In other words, a CCD sensor/detector with say 70% of QE detects 7 out of 10 incoming … Celý příspěvek →

Really? Really. Since 2008 when I purchased my first (ever) refracting telescope intended for astrophotography (Borg 77 EDII @ F/4.3) I have collected many Borg items purchased from Astro Hutech (Ted Ishikawa was always very helpful). Namely, after Borg 77 … Celý příspěvek →

OK, it’s not going to be a real review, but just a bunch of user comments after using this camera for a while. First, I’d like to state the reasons why did I purchase it? I wanted a camera that … Celý příspěvek →

Seeing is believing. I like to check and measure myself various characteristics and parameters of new items that I have just purchased. The purpose is to show how good or bad the product is in order to make it easier … Celý příspěvek →