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SteveNickolls

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About SteveNickolls

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    Nottingham UK
  1. Thanks for all of this. I'm sure a lot of SGL members will also use some or all of the software and this gives a helping hand understanding how different computers use the software. Cheers, steve
  2. SteveNickolls

    Field rotation question

    Hi, I don't know the formula used to calculate a maximum exposure time but Joseph Ashley, in his, "Astro-photography on the Go Using Short Exposures with Light Mounts" over pages 95-97 (available from FLO-https://www.firstlightoptics.com/books/astrophotography-on-the-go-book.html) provides tables for a range of observer latitudes. I took the tables and worked roughly the values for my latitude (53 degrees) and use that to provide a ready reckoner of maximum exposures times for any given object as part of the imaging preparation phase each night. I only use Stellarium and while it gives Alt and Az values for objects it doesn't give you maximum exposure times when Alt-Az imaging. For an observer at 50 degrees Latitude any object below 50 degrees Alt regardless of Az is ok to image for up to 30 seconds the time being greatest when an object is in the East or West (equal to or beyond 344 seconds!). I recall that The Admiral posted a graph in the, 'No EQ Challenge Thread' showing the exposures times. It's a long thread so good luck hunting for it. The Mods would never let the thread be broken into more useful searchable form, shame really. Cheers, Steve
  3. SteveNickolls

    Samyang/Rokinon 135mm f/2 experiences

    Hi, Thanks for your post. I have used the lens with my Canon DSLR's, a 600D and a modded 700D on my Star Adventurer and CG-5 mounts. I rate the lens as excellent and capable of being used at f/2 with no worries. There is a review here-https://www.lenstip.com/442.11-Lens_review-Samyang_135_mm_f_2.0_ED_UMC_Summary.html Here are two images taken with the lens and DSLR using an Astronomik 12nm Ha filter. I use one of these-https://www.teleskop-express.de/shop/product_info.php/language/en/info/p9891_TS-Optics-Telephoto-Lens-and-Camera-holder-with-Vixen-style-dovetail-bar.html Cheers, Steve
  4. SteveNickolls

    Stellarium 0.18.1

    Thank you indeed for this update. The sheer number of changes is testament to your dedication. Must have a look at StellariumWeb Cheers, steve
  5. SteveNickolls

    Binocular Sky Newsletter, July 2018

    Yes thanks once again, looking forward to July's skies. Cheers, Steve
  6. SteveNickolls

    migration windows to linux

    Thanks for posting. I would (move from Win 10 that is) if I could (no understanding of Linux). I have however followed advice elsewhere on SGL and used, 'Shut Up 10' to at least keep the laptop from reporting each keystroke (my, MS must be tired of recording all my astro-imaging data ha, ha). Good luck with using your new O/S. Cheers, Steve
  7. Hi Neil, Thanks indeed. It's is difficult years down the line to be able to recall things exactly especially the nuances of SL he, he. however once you have things working the way you want you will be able to switch on any time in the future and detect showers. I agree this year's Perseids will be very worthwhile following and comparing. Cheers, Steve
  8. Pleased it's working more to how you want it Neil. If you have skills in programming making a script for what you want it to do is well within one's means and that's wneh SL customisation really comes to the fore. From what I recall the Aretids will be due South of Dijon around 10.00AM local time (UTC +2) so the peak might well be slightly different to the usual showers peaking in the wee hours. I'm going to turn on my system today and see how the hourly rate varies over time. Good luck with your detections. Cheers, Steve
  9. Hi, I've had several hundred sleeps since I downloaded the necessary scripts . Hmm let me see, are these any help Neil? https://www.britastro.org/radio/downloads.html If not let me know and I'll see if I can copy those I have on my pc hard drive. Cheers, Steve
  10. Well that indicates a initial detection of the ISS near the place called La Chapelle-Montligeon, France to over the Adriatic between Pescara, Italy and Dubrovnik, Southern Croatia. I'm intrigued to again detect the ISS outside the expected 180 degrees sweep East-South-West. Can't imagine it would be another satellite coincidence? Cheers, Steve
  11. Well that ISS pass over left a decent trail, I'll post the screen grabs together and work out the coordinates over which the ISS flew when I get back as i have to pop out in a bit. I might miss the next pass over unfortunately. ISS 19.6.2018.docx Cheers, Steve
  12. Hi Neil, I have just the FunCube Pro+ dongle connected into the pc via USB, nothing more. Regards, Steve
  13. The next pass ought to go over Dijon and Italy then the following is across Central Spain. There's a chance to detect something on the next pass but the following ought to be more likely. So far this hour there's been 29 detections of meteors in 23 minutes, the last one was a longer one, around a couple of seconds in duration- Cheers, Steve
  14. Coming in thick and fast, 28 now.
  15. Watching ISS Tracker the ISS will be in a good orbit next two times around for possibly picking it up using GRAVES. Cheers, Steve
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