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About Thommy

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    Stenloese, Denmark

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  1. I think it should do the trick - remember to select the AR option when you upload the firmware to your wheel. The download contains both versions!
  2. Are you using the "AR" version of the firmware? /Thommy
  3. Excellent shot - in particular taking the difficult circumstances in consideration. We often see widefield images of vdb objects (or other reflection and emission nebulae), but actually they also provide a wealth of detail, as you demonstrate here. Not to talk down the widefield images - they just have something else to offer. Really nice to see a closeup. /Thommy
  4. Ha, I know the problem. I have loads of master L, R, G and B files (but mostly L) but somehow I never find the time to combine them before going to the next target.
  5. The ASI294MM would fit my needs perfectly (pixel size, sensor size etc.). But strange to see amp-glow, when ZWO already produce cameras without amp-glow. ATIK has announced that they work on a new camera - any rumours? /Thommy
  6. Dear CCD-Freak, or any other owner of a 533 camera - would it be possible to link to some raw files (i.e. non-de-bayered) taken with this camera? I think it could be useful for me to play around with them. /Thommy
  7. That's the one I got as well. It is intended as a warning and not an error. The new version should fix this. Remember to use the most recent SX ASCOM driver.
  8. In the meantime, the NINA guys reported back to me that they had solved the issue in the latest ver. 1.10 beta version. I installed this version on my old laptop to test and voila! Now it connects, you can change the settings and download images from the camera. You may not have the same problem. Actually, my camera connected before as well, but somehow NINA waited until the CCD temperature was read which would never happen as it is not supported by the camera. Try to install the 1.10 beta version to see if this helps. Do you get any error messages?
  9. I tend to agree with you. Do anyone know if a new CMOS based mono camera similar to 553MC (pixelsize, QE, chipsize, full well, read noise and bit depth) is on the rise? Any rumours?
  10. Adam, Thanks for the comprehensive explanation. My first thought was that the quoted calculation makes sense. Now I'm not so sure. Take the pixels covered by a red filter, let's call it "red pixels" for now. For every 2x2 pixels there is one red pixel. By multiplying with the percentage of red pixels, you assume that the red light hitting this red pixel is spread over the 2x2 "superpixel", and that the remaining three pixels are not active to red light. Is this a good approximation? I would say that it is a problem for the resolution, but not for the efficiency. As I understand it, but
  11. That's right. They always announce the peak value. I have seen the relative efficiency across the spectrum somewhere, and it looks quite flat, which is also positive. But how much is absorbed by the filters? 10-20%?
  12. Working from home those days makes me reconsider future astro projects The 553mc camera (IMX 533) seems very nice - deep full-well (almost 20,000 at gain 100), reasonable read noise (1,5 e at gain 100) and 14 bit converter. Further, the QE is close to 80%. I'm almost convinced it's time to go back to OSC from mono. Almost ... I suppose the referenced QE is not taking the colour layer into account? Have you seen any references on what the "true" QE is? Do any of you know of any plans to incorporate a similar chip but mono into a astro-camera? What are the experiences so far?
  13. Really no one having the same problem as me? I did a conformity test on the SX ascom driver, but it passed with no remarks. Now, I have replaced my old laptop as well with WIN 10 instead of WIN 7, but unfortunately the problem persists - everything within the imaging window of NINA is inactive. It's a shame, really, NINA seems very neat.
  14. It's fascinating how deep you can go with modest equipment. Your MN190/ASI174MM combo seems to perform really well. The 174MM has a higher read noise compared to newer CMOS sensors, which is of disadvantage when you are interested in faint fuzzies. Still you do well! What gain do you use? Do you live in reasonable dark settings? /Thommy
  15. I always use exposure times between 3 and 5 s with my EQ8. If I use 2 s, guide stars seem to move randomly indicating that I try to chase the seeing. This is always resulting in inferior guiding. In your plots above, it seems that the corrections for the plot with 3 s exposure are very small. As far as I can tell, the problem with using 3 s or more is not the mount, but that corrections are insufficient. It is a bit strange since your agressiveness setting are quite insisting. What is the guide speed setting for your mount? A few things to check: Is the orientation of your guide camera co
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