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Kon

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Kon last won the day on October 6 2023

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  1. This is my first ISS with the new 12" Dob. I do not have tracking ISS with the GoTo yet but a friend is helping me out. Awful seeing with a 5 min break between clouds. I focused on the moon and even with the IR filter it was boiling. Only 7 frames were of decent quality to stack. Several modules are visible, SpaceX Dragon, Progress and Soyuz. 12" FlexTube GoTo, asi462mm, 2.5x TV powermate, IR 685 pass filter.
  2. Thanks Reggie. I can't wait for the planets to be back again.
  3. You are aiming for 5x the pixel size of the camera. The less elements between the camera and telescope the better. I never found benefit from binning but you can try during the processing.
  4. I am not a DSO imager but I recently got a second hand 12" Dob and I was getting flaring in Jupiter's moons. I thought it was collimation but in the end I had some pinched optics; is it likely to be after you cleaned the mirror that you may have tightened the clips around the mirror a bit tighter? Just a thought.
  5. Great first effort! I am sorry you are hooked into imaging 🤑.....I am glad I got into planetary than DSO as it seems to be a much more expensive part of the hobby. Enjoy and looking forward to more of your posts.
  6. Thanks Ian. Yes give it a try; I captured this one jsut after sunset, it does not need to be dark as long as you can find it. I love my 462; I have both the c and m versions. Both are excellent in IR sensitivity so you can use your c for IR captures. The only reason I bought the m was for Venus due to its sensitivity in UV. I used the m last night as it already had the filter on it. Your c with an IR pass filter is effectively becoming mono. I added the colour in Gimp (or whatever software you use for editing) by colourising the planet layer only. Regarding collimation, the moons are not perfect and you can see why I keep pushing to get it to work, but I found the problem and resolved it, most likely pinched optics (see my other long thread).
  7. I think I have a solution. It was probably pinched optics; I took the primary out and although the retaining clips where loose (credit card could fit), it was the side nylon screws between the retaining ring and mirror that I had tightened quite a bit. Collimation and star test revealed nice concentric rings and no flaring at the stars. Out of focus star (the infocus was awful to make any judgments).
  8. Not flat but at a high angle. My issue is flaring on Jupiter's moons thus my concern something is not quite right.
  9. I will give it a try with rotating the primary. Regarding the secondary, there is no cell just the glue at the back on the he holder, the standard skywatcher setup. I will rotate the primary and if it persists in the same direction, is it likely to be secondary? I agree seeing is not great but stars at the eyepiece are not pinpoint but have a bit of flaring. The clips are not touching the mirror as far as I can tell, but I can do the credit card check. There are 3 nylon screws between the retaining ring of the cell and primary that I have quite tight, these are on the side. Could that be it? I will loosen them and check.
  10. Thanks Pete. Yes the moons were added as another layer; they are from the same capture and popped by stretching the image.
  11. if so, what's the remedy? Or nothing it can be done? But I wonder how much it is bad seeing. I need t orepeat the star test with my camera. Unless the primary had not cooled down although it was out for a good 3 hours when I did the star test.
  12. So I am still having issues with collimation. This is the star test and something is not quite right, and I cannot point to it. Out of focus looks alright but the in focus is a bit odd. Ignore the bad seeing. To me it is the lack of symmetry; the primary was not locked so i do not think it is pinched optics (I had the primary out a few weeks ago and the retaining clips are loose too). Any thoughts?
  13. I had another bash on Uranus and I managed a decent image despite ongoing collimation issues (I am not happy yet). Uranus with its five moons and norther polar hood. Captured with IR 742 filter and false coloured. Skywatcher 300P (12") Flextube Goto, asi462mm, IR pass 742, 2.5x televue powermate. This is a 10min capture and stacked the best 25%.
  14. I just got my first glimpse of it. It is rather bright even at the 9x50 finderscope, but I could not observe any tail.
  15. Try focus on the moon features not using a mask. You will get much better results. Yes experiment with the software. There is plenty out there 😁. We are usually drawn to the more bold features and we tend to oversharpen. I still do it with my planets but having other critical eyes to feedback is great. Looking forward to more captures.
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