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About JohnSadlerAstro

  • Rank
    Proto Star
  • Birthday 29/07/01

Profile Information

  • Gender
  • Interests
    Astronomy, Aircraft, Aviation Gaming, Physics, Technology, RC Aviation, and Model Making
  • Location
    Chippenham, Wiltshire
  1. You can't image in a storm!

    Ahhhh....So that's what they are meant to look like! I'm afraid my guiding graphs look nothing like that! Those are amazing results considering, 2 junctions down the M4 we still have 25mph gusts and cloud 2/10s. John
  2. The Sun Through Sahara Sand

    Now that the arm has passed over, the sun seems impossibly dazzling, so my guess is that there is still dust/a bit of haze up there.
  3. The Sun Through Sahara Sand

    Overall the sky and cloud gave the South West quite a Martian feel! Fortunately it didn't rain or we would be forever cleaning Western Saharan sand off the windows! John
  4. The Sun Through Sahara Sand

    Hi, I got this picture a few minutes ago as an outer arm of Hurricane Ophelia went overhead, the Sun went really red which I believe is caused by dust and sand in the atmosphere. No sunspots were visible, but I'm assuming that the sand would blur them too much anyway. The sun was dim enough to look at quite comfortably for over an hour. Clear sky is following, but I doubt that the wind will drop enough to be able to do anything tonight with the setup. John
  5. The Pleiades

    Quite nice, to be honest, I messed around with the settings so that PHD isn't too aggressive, and I just get a correction every few seconds one way or other. There is a general trend to form a wave up and down, but it is over 20-30 seconds and is only very slight. EDIT: I will take a screenshot and PM you with it next time I guide, if you like Oh and, hello again, the 50mm finder is working great John
  6. The Pleiades

    I cant help you with that one I'm afraid Never used it John
  7. The Pleiades

    Tell me about it Why my savings account is rekt now! John
  8. The Pleiades

    https://www.firstlightoptics.com/skywatcher-mounts/enhanced-dual-axis-dc-motor-drives-for-eq-5.html This is the one that you want, the handset has an ST4 port in it. John
  9. The Pleiades

    So what kind of EQ5 do you have? I'm assuming you have the standard version like me, but with the older handset? John
  10. The Pleiades

    Although the Pros may frown my system is all to simple. So I have a basic, mechanical EQ5, NOT the GoTo one. I have the latest motor set and handset which includes an ST4 socket. I then use a Skywatcher 50mm finder with a cheap ASI ZWO webcam screwed into it. A USB cable goes from the webcam to the laptop and an ST4 goes from the cam to the mount, then I open up PHD guiding (free) and guide away! altogether auto-guiding upgrades cost £150. John
  11. The Pleiades

    This is my first image which broke the one hour barrier, as far as I know. As I cant really start imaging until midnight when the council helpfully turns out the lights, I am a bit limited in time, but autoguiding makes for far more time-efficient frame capturing. John
  12. The Pleiades

    Thanks As far as I know, there was nothing abnormal, (for once) as Pleiades was lower than the America to Heathrow flight path. The image data is almost 2 weeks old, though. John
  13. The Pleiades

    Ok, so: So long as the left hand foot of the histogram peak has cleared the left hand edge, I'm good? And pushing the peak along to the right after that is essentially unnecessary because I can do that in processing. And I can get more brightness levels by using ISO 800. Is that correct? John
  14. The Pleiades

    Thanks for the advice, folks, I'll try doubling the exposure length and going to ISO 800, that shouldn't be an issue as I am autoguiding. I am planning to take as much of the setup as I can on our holiday to north Norfolk, a place in a village amongst the sea mashes where there's no not much light pollution; I think I will use the opportunity to image the Andromeda Galaxy. I forgot to mention, I was using a LP filter, the £30 skywatcher one (which doubles my maximum exposure length) John
  15. The Pleiades

    Hi, Taken on the 21st September, around 2 hours total of 200sec exposures, ISO 1600 with an EOS 1000d. Guided with ZWO ASI webcam and 50mm finder. 130P-DS on EQ5. The finished result came out a bit noisy, but overall I'm very happy with the nebulosity that the longer exposures captured. John