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Thalestris24

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Everything posted by Thalestris24

  1. Thalestris24
    Hi Yeah, without a computer interface then you can't control the mount via computer but you can still take images via APT. In principal you could switch off your mount for a second or two in order to manual dither but I'm not sure how well that would work in practice. It's not the end of the world if you can't dither. Lots of people don't bother even though they could/should! Louise
  2. Thalestris24
    Hi I think it was improved - a bit! Trouble is cloud and other things conspire to prevent me from using it very much Louise
  3. Thalestris24
    Hi I did mine - there is info and pics here (not mine!) Louise
  4. Thalestris24
    Hi You might need to service the Crayford and try and see why it's slipping. I didn't have that problem with mine but later on I did attach a SW motorfocuser and they are very good at holding the focus and make it easy to make very small focus adjustments with changing conditions -plus you don't need to use the lock screw Louise
  5. Thalestris24
    Hi Alacant You can get a set of secondary thumbscrews from TS Sorry, don't know screw size for the focusser. Louise
  6. Thalestris24
    Hi Yeah, I think the asi also needs to be set to 8-bit for ST4 operation. You need to put your logs into PHDLab so that you can see what's going on. Louise
  7. Thalestris24
    ps be aware that if you happen to be guiding with a qhy5l-ii in ST4 mode then your guide cam must be set to 8 bit rather than 12 otherwise it won't work! Louise
  8. Thalestris24
    Hi Frank It sounds to me like PA isn't your root problem. After all, PA errors will only cause field rotation. I'd look at things like balance and flex. Not sure what guide scope and camera you're using? You maybe need to look at how your setup performs unguided whilst running the PHD2 Guiding Assistant - that can tell you a lot about where problems may lie. Perhaps you can post your PHD2 settings and PHDlog analysis? How is your PHD2 calibration? Also, when you say 'everything goes crazy' can you be more specific? Louise
  9. Thalestris24
    Same one here, I think
  10. Thalestris24
    I think this is the one I bought though I don't think it was called 'quattro' then....
  11. Thalestris24
    Hi Misalignment of the focus tube, I believe, but I never got around to trying to fix it. Louise
  12. Thalestris24
    Hi Um, I honestly can't remember now as I mixed and matched so much! I started off with a 150pds (with Baader cc) then moved over to the lighter and easier to handle 130pds (with gso cc). The only problem I recall having with the 130pds was a tilt problem which seemed to be due to the focus tube rather than anything to do with coma correctors. I do remember using the gso cc with it as it increased the focal length but I didn't see that as a problem. However, I put the scope to one side intending to sort it out at some point.... I then spent a long time imaging with a camera and f4 200mm lens, then bought a 115mm frac which I've hardly used on account of the near permacloud here . My newts and their coma correctors are gathering dust... Louise
  13. Thalestris24
    Hi all I'm afraid I can't confirm whether or not there were any issues at all with using the gso cc on a pds scope. It's been more than a year since I used a Newt having gone over to camera+lens and fracs, which have fewer issues generally . I don't think there is any advantage with using the gso unless you need the extra backfocus for something. Although I tried using a filter wheel at one time, the weight of it caused flex and I changed to using TS quick change filter drawers instead. They are much lighter and only take up 15mm so better (for me) in most cases. Louise
  14. Thalestris24
    It's not a problem with the pds scopes as far as I recall (not used either of mine in ages). Louise
  15. Thalestris24
    Hi Thanks for quoting me! Yes, the gso increases focal length slightly but doesn't have a negative effect on image quality or on guiding. Louise
  16. Thalestris24
    Hi I think when calibrating in PHD2 the pulse guide settings need to be at max (0.90) - I leave mine on that anyway. RA aggression settings in PHD2, on the other hand, need to be adjusted to what works best. As I said before, the bullseye in PHD2 is a good guide for monitoring drift over a session. Louise
  17. Thalestris24
    It might. I have the Rowan mod on my Heq5 and found the balance became quite critical. No East heavy, and accurately balanced in all three axes - RA, DEC and vertical. I had to adjust mine to in order to ensure the guiding corrections in PHD2 were centred around the bullseye. If they are to one side, you'll get the drift. Louise
  18. Thalestris24
    Hi It looks like you are dithering? When I use dithering I do it in RA and DEC and select the spiral pattern. You can use the Guiding Assistant to see how your mount is performing with guiding off. You should then just see the effects of periodic error and seeing and get feedback on PA (though it seems to return instantaneous values). Louise
  19. Thalestris24
    Hi What happens if you run unguided? What does the PHD2 guiding assistant say? What does your guide log say? PHDLab? It looks to me like you're mostly drifting in RA so could be a PHD settings issue or a balance issue. Louise
  20. Thalestris24
    Hi Robin Thanks for the tips. I'll have to look at the data I got, when I have some time. As I mentioned, it was difficult with the bright stars because of the short exposure times. I used APT for capture. The only trouble was that with the lowest fwhm the spectrum was very faint. I captured various exposure times for some stars so will have a look in RSpec to see what works best. Louise
  21. Thalestris24
    Hi all I actually had some clear skies and first light with the SA100 last night! With the 80mm APO and Minicam5s, I took a number of single subs of each of a number of stars (~20 subs of each star). It was very quick Hope I did it right - I wasn't sure of exposure. Most subs were in the range 2s-14s. I did some bright stars which I had to expose for <1s to prevent mega saturation so were probably messed up with the seeing. Hopefully at least some of the subs were ok. Another time I might try taking a video instead of the singles and also 'live' with RSpec. I've downloaded RSpec but don't know when I'll have time to learn it well enough to analyse the data as I'm (supposed to be) in exam revision mode... I'll be 'free' after May 18th Louise
  22. Thalestris24
    Wow! Plenty of choice there! Louise
  23. Thalestris24
    Here's a quick phone flash snap of my 115mm Apo. It's been gathering dust of late If it wasn't for the flash you'd see the street lights and floodlight (during the week there's a whole batch on until after 10pm) more clearly... Louise
  24. Thalestris24
    Hi It may be to do with the thumbscrews or it could be the focusser assembly itself isn't square. Astronomyshed's youtube video on tweaking the quattro shows one way of checking and adjusting the focusser. Louise
  25. Thalestris24
    The irfanview faqs say: Q: Why is RAW loading slow (Camera RAW formats, e.g. CR2)? A: This depends which RAW plugin options are used in 'Properties->PlugIns'. The preview option is the fastest, Half-size is fast and if both are deactivated: the full RAW image is loaded => very slow. So it looks like you might need to edit the settings Louise
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