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assasincz

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  • Content count

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About assasincz

  • Rank
    Star Forming

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    navelekvojtech

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  • Gender
    Male
  • Location
    Czech Republic
  1. Saturn in 12'' dob

    Hi all, I want to share with you my so far best image of Saturn, taken using: 305/1500 goto dob Skywatcher QHY-5 mono IR-UV block filter Baader barlow 2.25 Registax, stack of 40 images, postprocessing
  2. Jupiter sequence 27/5/2017

    SW 305/1500 GoTo Dob, QHY-5 Mono
  3. Seeing was mostly poor, but I am quite happy with how it came out
  4. The clouds parted some time after first contact and lasted for some 20 minutes. If it were clear, I could have watched it about 4/5 of the way through the transit, up to dusk. Attached is a photo of a setup I used
  5. It occured to me that I should share with you the timelapes of this year's Mercury transit as seen from Czech Republic. The clouds have parted for some 20 minuts, allowing me to capture this timelapse. I shot it with a modified webcam, Baader 2.25x Barlow and UV/IR cut filter, using my former SW MAK 102/1300.
  6. Uranus 2016-09-27

    It has been too long since I contributed anything to the forum, so I thought to share with you my latest try in planetary astrophotography. Actually it is my first try with SW 300p Goto Flextube dobsonian which I recently acquired. I wanted to try out how the system tracks for webcam astrophotography, which is my second point of interest after visual observing. In short - it tracked quite well - no jerkyness in tracking, very smooth, stable and centred for a long time, and I am also very happy with my old motor focus which helped me out tremendously. The conditions were very poor though, and the resulting picture is heavily post-processed. At least it managed to capture the colour quite nicely. For caputre, I use a modified Prestigion PWC2 webcam, Baader 2.25x barlow and UV/IR-cut filter. You can see the imaging setup in the second picture.
  7. Flocking an OTA

    I have had a 12" dob, single-sheet flocked, and never noticed any issues
  8. Baader Hyperion Zoom Mk.III

    Separately, there is no adapter in the box as far as I know. You can read more about it here, directly from Baader Planetarium: http://www.baader-planetarium.com/pdf/hyperion_brief_description_e.pdf I think info you need is on the next-to-last page
  9. Baader Hyperion Zoom Mk.III

    Yep, it can: http://hyperionzoomlover.blogspot.cz/2011/05/hyperion-mark-iii-8-24mm-zoom-dslr.html
  10. Baader Hyperion Zoom Mk.III

    It certainly makes a difference - not only to the Zoom eyepiece, but to many other uses. Let me put it this way: I have bought the Hyperion Barlow 2.25x separatly and now, after having it for a while, I regret that I did not buy the barlow with the eyepiece together in the first place! From what I can tell, for the money, it is an excellent piece of glass. Certainly, it is designed to work best with the Hyperion Zoom eyepiece, so I reckon it compensates for the Zoom eyepiece abberations best, but you can screw it onto any 1.25" eyepiece and it will work perfectly fine, as any other Barlow. With the Hyperion Zoom, you can use it with both the 1.25" barrel (you screw it onto the filter thread) and with the 2" barrel (you screw it directly to the variable focal legth shaft, see http://img198.imageshack.us/img198/7815/hzbarlow12.jpg), so it is VERY versatile. Screwing the barlow on can be a bit of a handful (when compared to other barlow elements), but then, the Hyperion Barlow itself is VERY compact and VERY small, which I find quite nice, especially when imaging with a webcam. Quality-wise, I recon it has decent coatings on all glass-to-air surfaces. I have not yet noticed that it would present any any amount of chromatic abberation, at all, even in high-powered large-diameter telescopes. Does it work as well as an apochromatic design? Hard to tell, because I have nothing to compare it to directly, but I have not yet certainly noticed any image quality deterioration. However, when observing very bright objects, like the Jupiter (with the Hyperion Zoom eyepiece and Barlow on highest magnifications), I sometimes notice a streak of parasite light, a sort of "ghost" if you will, moving across the FOV as you move your eyeball around, but that could also be due to the high magnifications and corresponding size of the exit pupil - so your eyes might be the culprit playing tricks on you, not the optics.
  11. Skymax 102/1300 Mak

    Thank you very much for the input. I have had my suspitions but it is nice to have them confirmed
  12. Please advise, Is Skywatcher's small 102/1300 Mak using: A - Gregory-Maksutov (spot) system with a coated centre spot on the meniscus, or B - Rutten-Maksutov system with a separate secondary mirror cemented to the meniscus?
  13. My First Venus

    This may sound like a article name from a teenage magazine, but I've had my first serious try at Venus this afternoon. I was freezing cold and had issues with both SW and HW, but here are my results
  14. The Venus Pearl ASI120mm

    I tried my Venus for the first time yesterday with my modest setup, and results are quite comparable. Turbulent air makes it hard, but I am pleased nevertheless.
  15. Hi guys, I have a chance to buy Lidl style Bresser refractor on this particular EQ mount. Does anybody here know exactly what mount it is? Do any of you any experience attaching a simple EQ2 motor drive to it? See below. It seems very sturdy compared to EQ2 so I'm tempted. I know there are probably not the same mounting holes on the Bresser EQ as there are on EQ2, but my hope is that the R/A gear and worm might be of similar size (and ratio) to EQ2, so that the speed of EQ2 motor drive rotation could accomodate it. If so, a little bit of DIYing might be enough. Any thoughts? Thank you very much.
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