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Everyone was asking for it, and here it is! 25 of the top brands and bulbs that we haven't tested before! Sit back and watch as Chris goes through all of the bulbs and lets you know which ones...
This is Lecture 1 of reflector antenna series and describes about the background of reflector antennas along with different configurations of it. Further, th...
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1 lip 2020 · Here are test photos of a dummy head Magnum vs standard reflectors. They are shot at 2 distances, both with the dummy head at aprox 110cm from the back wall. Used an AD600 with remote head, WB flash, JPGs (comparison shots screengrabs of lightroom). All shot at 1/160 and ISO 100 on an A7Rii and tamron 70-180 at 70mm and 180mm.
Prime focus is simply where your telescope acts as a very long telephoto lens. If you think about it, a camera lens is really just a smaller telescope and vice versa. I am planning on getting hopefully if I can still buy it a Celestron AstroMaster or Orion StarProbe 127mm reflector on a EQ mount.
18 lip 2004 · Reflector Mod for Prime Focus - posted in Equipment (No astrophotography): As some of you may or may not know, many reflectors will not allow you to do prime focus astrophotography. This is due to the fact that it is not possible to acheive focus since there is not enough in-travel with the focuser.
16 lis 2016 · I want to do imaging on a reflector. My question is: Is there some back of the envelope calculation that can determine if I can get prime focus? For example, lets say I have an 8 reflector. Would f/4 be ok? How about f/5 or longer? T...
