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R26 oldtimer

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Everything posted by R26 oldtimer

  1. R26 oldtimer
    I've been using my full spectrum modded DSLRs both for astro imaging and infrared photography with external ir pass filters.
  2. R26 oldtimer
    A belt moded Heq5 is still a very reliable budget option.
  3. R26 oldtimer
    Welcome to SGL 👍
  4. R26 oldtimer
    I consider serious astrophotography when you don't have to trade functionality for convenience or portability. Using full version of phd2 with all it's options instead of a crippled version which doesn't let you utilise different guiding algorithms, falls in that category, especially for strain wave mounts. My guiding graphs are in reality seeing dependant. On good night's they range from 0.45" to 0.6", and on medium/bad from 0.65" to 0.85". I used to have 0.7-0.8"RMS with my neq6, but the the peaks were 1.5", while the strainwave has much smaller peaks,for the same rms, no more than 1" This is with my 150/750 newt, oag, full mono setup with 5x2 filterwheel.
  5. R26 oldtimer
    The nyx should work with the asiair using the LX200 protocol. But, the asiair is designed as an entry level equipment and its functionality is severely crippled for advanced astrophotography. I use my nyx with a simple mini PC and Nina and have a fully functional version of phd2 which allows me to use different guilding algorithms such as the predictive pec algorithm which is what you should be using with your NYX mount. Don't get me wrong, I think asiair is great for beginners, but for serious astrophotography, you need more.
  6. R26 oldtimer
    I've downloaded and installed it. It looks pretty interesting, but I was hoping it could use the smartphone's camera. Is there a reason not to?
  7. R26 oldtimer
    I think the best two bang for buck contenders are the L-extreme and the Idas NBZ. I had the l-extreme which didn't manifest any halos but moved to the NBZ with slightly broader band pass to use it with sub- f/3 optics.
  8. R26 oldtimer
    Thank you very much. Congratulations to all participants and especially @woldsman and @900sl. ☺️
  9. R26 oldtimer
    Congratulations to all participants!
  10. R26 oldtimer
    I am using the 150nt for imaging. As it comes from the factory, it is a better scope than the equivalent pds. Bigger bore R&P focuser vs the 2" crayford of the SW and oversized secondary compared to the pds. Used it until last year with a GSO cc which was pretty ok but now moved to a GPU cc. Focuser does not protrude into the light path with either CC's and doesn't have any noticable sag loaded with oag, SX heavy filter wheel and mono camera. While the focuser doesn't seem to sag with weight, the telescope thin metal metal tube deforms slightly under a heavy imaging train, so for better results another tube or some reinforcement around the focuser section of the tube is needed. My guess is that this will be more noticable in the 8" version scope.
  11. R26 oldtimer
    Very nice scope, congratulations Stu 👍
  12. R26 oldtimer
    I will be using it for imaging only, so I've made it as low as I could. It gives me 10cm clearance from the ground with my 10" newt mounted and aiming near the zenith.
  13. R26 oldtimer
    ...Aka nyx-101 on a todmorden pier. Thumbs up for Peter Drew's simple but robust design.
  14. R26 oldtimer
    Well, amateur astronomers are well known for their ability to adapt and evolve 😁, so give it a go 👍.
  15. R26 oldtimer
    I don't think that it will be a straight fit. The pegasus tripod has a Nyx top, while the sw mini pier has to sit on an eq6 top. You'll need to remove the bottom adapter from the mini pier, place a pegasus eq6 to nyx adapter on top and run a m12 long bolt all the way through, from the tripod spreader to the mount itself. Not sure on the stability, so better consider getting the rods.
  16. R26 oldtimer
    Agreed, for payloads up to 15kgr and short and medium focal lengths, it is actually very stable, with a very wide spread while it is lightweight. For higher payloads, the sensibly priced eq6 tripod, works even better, but not so portable.
  17. R26 oldtimer
    Check focuser tube sag, then the whole focuser to tube connection (3 screws) before messing with the lens cell.
  18. R26 oldtimer
    Ok, I'll bite 😄. This is my take on the heart & soul nebula. Shot during three nights, from 3rd to 6th of March, with moon almost full, from Athens (bortle 9+), and was actually intended as a test for my new lens. 120x300sec subs, Canon RPfullspectrum, Optolong L-extreme, Canon FD 300L 2.8 @2.8, Pegasus nyx-101.
  19. R26 oldtimer
    +1 for a simple and cheap mini PC with NINA or APT and full version of phd 2. Just make sure to get one with no less than 4 USB ports.
  20. R26 oldtimer
    There is a brake only on the RA axis which is always severely unbalanced. To be honest it was almost impossible to move the dec axis (even with the mount unpowered) due to the friction of the reduction belt drive, when I tried to rotate it with my hand no matter how much I struggled. Perhaps with too much force or weight, it might give way and start to move but the motion will be severely dampend until reaching a stop. But my guess is that it takes a lot of weight, certainly way above 25 kilos to move and perhaps this is the only reason they suggest putting a counterweight for payloads above 20Kgr.
  21. R26 oldtimer
    I'm toying with a similar idea, but why split the roof in half? It could rotate as a single piece to the side.
  22. R26 oldtimer
    Set up last night the nyx with the Canon FD 300 2.8 (hoping this will be my widefield travel setup), but intermittent clouds ruined the imaging session. So I played a bit with phd2's guiding assistant, and was very excited with the backlash graph. It seems that those strain wave mounts are indeed backlash free, which is also quite obvious from the ultra fast dithering settle time.
  23. R26 oldtimer
    A very nice fluorite 107/300 refractor. Stars at the corners of a full frame sensor show some coma, but my guess is that some cropping and blurXT will take care of them.
  24. R26 oldtimer
    I haven't noticed different guide rates for RA & DEC in the unity app and I am not sure if PHD2 copes with that but, if aggression settings won't do the trick for you, perhaps you could try a different guide algorithm such as the Z FILTER algorithm for DEC.
  25. R26 oldtimer
    No, I didn't run the guiding assistant and to be frank I haven't had the opportunity to set it up again since, because of the constant cloudy weather. We might get cloudless sky over the weekend (planning to shoot m81-m82), so I can give it a go.
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