Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.


  • Content Count

  • Joined

  • Last visited

Community Reputation

18 Good

About Thommy

  • Rank

Profile Information

  • Location
    Stenloese, Denmark
  1. 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.
  2. 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
  3. 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 correct? Is there a slight imbalance of your mount to the east? Do you have a good guide calibration? /Thommy
  4. I agree with the others that you should test it on several nights to see if your findings are consistent. TS are known for their first-class service. If I were you, I would contact them and explain the problem. /Thommy
  5. Just noticed this now. A very detailed image of IC342. I don't recall to have seen an image of the hidden galaxy with both structure and star forming regions to stand out so clear as in this one. Well done! /Thommy
  6. I tried to install latest Nightly and x86 version. Both tests failed, as exposure time, binning and "start imaging" in the imaging window are still grey. The NINA log is not very informative - only problem is reading ccd temperature, but that's not implemented for my camera anyway. So if anyone had the same issue with NINA and a SX camera, and solved the issue - PLEASE let me know!
  7. I did try to play around with different settings with no success, but my working hypothesis is now that the problem is with NINA and not with the driver. My plan is to try the latest nightly and, if this does not work, to install the x86 version. When work and the usual diseases in the family permits me to test .... I will update the thread when I have some news, but if others have some similar experiences (and solutions) please let me know. /Thommy
  8. Hi Peter, Today I tested Bret's ascom driver in AstroArt and guess what - it worked! On the other hand I know of others with SX cameras who use the same ascom driver with NINA. So perhaps Nina is allergic to a MX7 or (more likely) there is something different in my laptop setup. Perhaps something with the .net installation? Cheers, Thommy
  9. Dear all, Are any of you using the SX ASCOM driver together with an older SX camera (I have a SXV-M7 but with a newer 829 chip)? Which version works for you? I wanted to try NINA for controlling the camera etc. and I tried several versions of Bret's ASCOM driver, but none seemed to work. While NINA connects to the camera, the capture area remains inactive. Happy new year! /Thommy
  10. CSX-249 would be sensitive due to the pixels size. With regard to dynamic behavior it is not optimal. With a full well depth of 33k and, say 2 e read noise (should be lower according to preliminary specifications), it has a dynamic range of 1:16500 which is very good, BUT since dataformat is 12 bit, you only have 4096 stops. For this camera a data format of 14 bit would be more appropriate to take advantage of its dynamic range. For CSX-304 the dynamic range is 1:5500 which is consistent with 12 bit.
  11. Excellent! I think the colour is right where it should be. Regarding Ha, this object doesn't really give any Ha signal. For some reason that I'm not aware of, there are no prominent HII regions in NGC 3718. I've never seen a photo of NGC 3718 with visible HII regions. This is a bit surprising - the close encounter with NGC 3729 should initiate a lot of star formation, and certainly there is plenty of young star clusters. So why don't we see any HII regions? That said, it could add a bit to NGC 3729, but probably not much. For other interacting galaxies, e.g. the cocoon galaxy, a Ha exposure is definitely adding a lot to an image.
  12. I currently use a SX MX7 but with a retrofitted Sony 829 chip in combo with a MN190. The large pixels (not square!) gives me a resolution of around 1.9 "/px which is just too low. CSX 249 would increase the resolution to 1.3 "/px and increase the field size a bit as well. That´s fine with me as I normally image galaxies spanning no more than 15-20'. Actually I consider the new SX Trius 825 or 694 Pro or as well, should I decide to continue with CCD's. Anyway, the discussion in this thread brings some interesting information...
  13. Steve, as I seriously consider the CSX249, I wonder if you have some more information by now from SX?
  14. Yeah, children can be like that! For the last few years I had to reduce my imaging to a minimum due to those beasts. Indeed, a very interesting presentation. I think the right way to look at it is to use the theory as a starting point for all the tweaking. The span of trial and error component is very reduced when you have an idea where to start.
  15. That's a good question, James! Perhaps we will have some opinions on this. Glover does a good presentation - just a shame that he had to skip the gain part. Nonetheless a difficult choice. With my suburban sky, I would probably be better off with a cmos, but I would have to add a new laptop to cope with the extensive number of subs. The low read noise of the new SX trius pro series may be a good compromise
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.