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Wiu-Wiu last won the day on October 20 2018

Wiu-Wiu had the most liked content!

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About Wiu-Wiu

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    Star Forming

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    Astrophotography and sketching
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  1. The RA swings to one side, then returns, but once the counterweight starts "rising" again, it quickly returns and finds equilibrium. DEC goes to one side (usually East first), then returns and keeps going to the other side until the clutch slips if I don't stop it. I usually let it balance in RA and then manually slew DEC to align that little screw on the DEC saddle with what looks like the middle of the mount. For the record: I usually polar align with the polar scope level (6 at 6 o'clock) - then rotate both axis to the starting ('zero') position - then start star alignment. But usually first alignment is off quite a bit. Which is curious, singe the mount has GPS.
  2. Maybe a silly question, but I have been wondering about this... Especially since my mount only finds zero position in RA (DEC keeps slewing so I need to stop it and set it manually) Ioptron polar scopes are not always inserted perfect level to the 'zero' position (scope perfectly straight on top). Some are rotated - that's why the polar scope has a bubble level attached to it. When you polar align, you need to rotate the axis so the polar scope bubble level is horizontal - that way you can place polaris at the exact spot on the "watch". My question: is the preferred zero position the position where the bubble level is leveled (thus the spot in which you polar align the mount? Or is the zero position still the spot where the scope is sitting on top (and the bubble level may be rotated) (The auto zero position in RA is where the scope is on top) Does it even matter?
  3. Ccdt67 image inspection if the “best” image I reached with it. Image train: I feel it might be the precise location of the telecompressor into the 2” fitting that is off. I tried to reach about 1 - 1.5mm on the inside of the fitting, as seen on the internet, but still no round stars in the corners. (Nor in the guidescope of the OAG) I don’t like the fact it varies too much, depending the placing. I rather like reducers that are screw-on or that have stopping rings.
  4. Hello Olly; thanks for your comment! I chose my camera mainly to image on my 127mm ED apo; the Edge came in after that. I DO like imaging smaller objects, but this range (fl/chip size) is beyond my comfort zone, I admit. Seeing that night was extraordinary for Belgian weather, so that picture is 50% of our excellent nights for this year right there. I am eyeballing a 120 Esprit to replace the 127mm (Better quality glass) - and was hoping to keep the camera going on that one; and the odd planetary on the C11. Would you have chosen another camera? (take in mind I have to keep it transportable, and do not want a laptop in the field; Asiair takes care of that - so camera had to be supported) As for the spots: It looks like it is frost, forming on irregularities on the sensor. I will clean the sensor as advised by ZWO, and regenerate/replace the desiccant pills. I'll try to store the camera away from moisture and hope to be able to get any remaining spots out with post-processing.
  5. Got him! Banding in background because I didn't wait for the camera to come to temperature. Another lesson learned
  6. Thank you! I noticed the black spots are in the same place as some dark spots in another picture, with the same camera, on another scope. I am afraid it might be frost. Anyone any advice on what to do?
  7. I seem not to be able to get my CCDT67 telecompressor (reducer) working on my C11 edge, as I keep getting coma and elongated stars to the corners. So last night I took it out and boldly set off to guiding off axis on the native 2800mm focal length. Mount used was my CEM 60, guiding and imaging software through the ASIAIR. Imaging camera: asi 071 - 2x2 binning. NO darks, flats, bias,... just stacking in APP. NO filters, as it was just a test, moon was just over first quarter and I live in Bortle 6. 200 frames were used (30s each so total integration time to a round 100 minutes) I think guiding and sharpness went pretty well, although I might add an extra autofocuser if I keep using this setup. Very pleased of the result, although STUNNED to see that much dirt in my optical train The bunnies might be on the camera sensor window (although I cleaned the outside that day, I think they must be on the inside), the dark spots appear to be ON the sensor Any advice on cleaning this? Before I start opening up the camera... (Camera is new, 4 to 5 months old) Other feedback is also VERY welcome!
  8. Does anyone know how I could make best use of this powerbar? It looks like it’s a power hub and mini pc in one, but I can’t really find a way to install it.
  9. Sounds a lot like my setup - except for the observatory (but I'm thinking of some sort of roll off shed). I opted to use asiair as I often take my gear out to dark locations - camera control: check - Guiding: check - Dithering: check - possibility to use autofocus is coming, and I heard they confirmed Polar Alignment yesterday. - local storage of images: check - no laptop or mini pc at the pier (and thus no need for extra power) : check - Telescope control (goto/platesolving/Skysafari sync): check All remote on the tablet from the comfort of my home - but thruth commands me to say it is not that far away. 8 meter should work. 15 meter is too far. I do have a mini PC/powerhub (EAGLE ripoff) but I have still to figure that one out (it was given to me). For the moment I have no need for it.
  10. You could go back to basics and mix in some topics devoted to sketching
  11. Wiu-Wiu

    100mm & M51

    Love the subtle hints of spiral arms in the main galaxy!
  12. Wiu-Wiu

    ngc 4945

    This faint but large galaxy is fainter towards the end, but what really stands out is the dark lane with 2 stars in it.
  13. Wiu-Wiu

    Messier 66

    Dark skies make the spiral arms really pop out, BUT I was very surprised to also see the faint extension I drew was not my imagination!
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