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About Rob63

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    Astronomy, physics, Painting, photography, Rugby
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  1. Rob63

    Windows 10...

    Make sure to get Windows 10 pro rather than "home"- this allows you to set times when the system can update i.e. no reboots during your precious imaging time! You can also defer updates for several weeks to help avoid buggy updates.
  2. Rob63

    Polemaster - Accuracy

    If you are not on a permanent mount then you don't really need perfect PA. I'm using sharpcap pro (guide scope ST80 + ASI120MM) , I adjust until under 10" on both axis and then get on with it! Done in under 5min, add another min if I do it twice (little benefit In my experience) If I feel the need to check it, a PHD drift and PHD guiding assistant and log viewer usually say my PA error is around 15" - 30" and the mount (EQ6-R) will happily guide that out. Rob.
  3. Rob63

    Asi1600 or 8300ccd

    Very good information on the ASI1600MM at Jon Rista's site https://jonrista.com/the-astrophotographers-guide/the-zwo-asi1600-guide/ I have had mine for a couple of months (latest pro version) and am very happy with it. Amp glow is not an issue unless you start going over 5min exposures - and if you want to do longer exposures then CMOS is not really for you.
  4. Rob63

    best auto guide rate to use for a eq6rpro

    I am guessing that you are talking pixels for your RMS as I used to own an AVX and there was no way I could get anything like 0.6" (arc sec). Its always best to use arc seconds as other people can accurately compare to their setup. Anyway, I am an EQ6-R owner and my average guiding is 0.67" (0.35 pixels) the best I have had up around the zenith was 0.47". I image with an ED120 at 1" per pixel. I struggled at first using the same sort of setting I used on the AVX, however, after getting some help from sky-watcher via FLO I was advised to go with lower aggression and have settled on the following as a starting point: RA aggression 42, Hysteresis 12 Dec aggression 90, min move is 0.16. I use 3 sec exposures in PHD2 (depending on the seeing I am using 2-4sec). Hope this helps, the EQ6-R is a very good mount and I am sure you will get there. Rob.
  5. Would a difference (5nm - 3nm) between those two give you a pseudo NII filter? could be an interesting one to try.
  6. Rob63

    The Cygnus wall in Ha

    You can take some credit for it Steve, "Making every photon count" was purchased along with my first "real" telescope a few years ago
  7. Rob63

    The Cygnus wall in Ha

    Thanks. I had heard that. about OIII, would a 3nm astrodon/chroma filter make a difference in moonlight ? (hope not I really cant justify the price tag to my wife) . Rob.
  8. Rob63

    The Cygnus wall in Ha

    Thanks Steve, just sticking with unity gain just now, 139 / 21 offset. I don't have a filter wheel yet but the camera comes with a 1.25" screw in filter adapter which works very nicely. giving minimal vignetting
  9. Rob63

    The Cygnus wall in Ha

    Thanks, really just testing the new camera but I am very happy with the results from a not ideal night.
  10. EQ6-R Pro, ASI1600MM, ED120 + 0.85x reducer, Astronomik 6nm Ha filter. 2 hours integration (30x240s) 50 darks, flats and dark-flats. Windy night, near full moon Captured via SGP, Guiding PHD2, Processed in photoshop. This is why I wanted to get into narrowband imaging, Taken on Sunday night from south Edinburgh (Bortle class 6) with a nearly full moon in the sky (95%) and I can still make the most of the limited opportunities we get here. OIII filter is next on the list.
  11. Rob63

    Atik horizon cmos camera

    The one difference between the ATIK and ZWO which made me buy the ZWO is the fact that you can use 1.25" filters with minimal vignetting.
  12. Check out the new section of Jon Rista's site - also make sure to look at the CN threads he lists. https://jonrista.com/the-astrophotographers-guide/the-zwo-asi1600-guide/ Some very useful info on this thread particularly Vlaiv's explanations on
  13. Rob63

    IOptron iEQ45 pro OR Skywatcher EQ6-R

    No offence taken John. I think the Number 1 thing for the OP is that you should buy from a seller with a good reputation who will take care of you if/when there is a problem. Rob.
  14. Rob63

    IOptron iEQ45 pro OR Skywatcher EQ6-R

    I just felt your post was a bit confusing since you own the CEM60EC which is a different class of mount I very much doubt the IEQ45 comes anywhere near it for performance. Anyway: I have had an EQ6-R for a year now and have had excellent support from SW (via FLO) when I was dialing in PHD settings, the mount is very well built with little backlash. A bit heavy but the built in handle helps a lot. I looked at the IEQ45 but decided on the EQ6-R as it had good reviews, has EQMOD and since it is basically an improved NEQ6 pro there is a wealth of information for tinkering. It's only ever used in my garden (Set up/tear down each night) so I can't comment on portability but I would't really want to carry it far. Skywatcher had a poor reputation for QC but they have improved a lot since the black gunge days (the same is true of iOptron). I get 0.8" guiding out of the box in the low south and once the guarantee has passed and I start tinkering I am confidant I get get under 0.6" - very happy with that. Rob.
  15. Rob63

    IOptron iEQ45 pro OR Skywatcher EQ6-R

    So it should at £2.7K !

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