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The Admiral

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Everything posted by The Admiral

  1. Finally all my iOptron gear is here . Thanks, FLO! Ian
  2. Good news! All good things come to those who wait :<) Ian
  3. It was after last night's announcement, and my question was as a result of it . Sorry to hear that your business has closed though. The issue does seem a bit contentious though, with questions today over whether, for example, house building can continue. It all seems to depend on whether the "2m" rule can be satisfied. FLO seems to have got it sorted. Ian
  4. See my post immediately above! Ian
  5. Perhaps I'm being a bit thick, but why did you need the laptop out with your scope? Ian
  6. Very nice too Brendan. You should be pleased with that. What sub length did you use? Ian
  7. Thanks for your late evening clarification Steve, and good to know. Just so long as everyone keeps as safe as they can. We do appreciate what you are doing in this very difficult, and worsening, situation. Thanks again. Ian
  8. New mount for me, but the shipment for the accessories I want are due at FLO tomorrow! We'll see, but I guess it'll take a while for FLO to find out what it's delivery companies' plans will be. Ian
  9. Well having just heard the PM's announcement, where does that put FLO and its delivery companies? I guess all will be revealed as time unfolds. Sad but a necessary move. Ian
  10. Well having just heard the PM's announcement, where does that put FLO and its delivery companies? I guess all will be revealed as time unfolds. Sad but a necessary move. Ian
  11. In my case, exactly so, being denied my other interests! Well done for soldiering on and I hope that you all continue to remain well. Ian
  12. For my sins I have one incoming, courtesy FLO, hopefully next week . Now I'm not in the habit of being an early adopter, it's not in my psyche, but given the self-imposed isolation I thought it would give me something to get my teeth into, even though we are heading towards the less favourable time of year for imaging. I needed an EQ mount that would take a 10kg load for imaging, but was light enough for my aging frame to carry from it's storage in the house and set up each time in the garden. I wasn't so keen on the CEM40 because of its geometry, as I am pretty much limited to southerly views. Don't expect a detailed critique though, as this is my first EQ mount and I've a lot to learn, having spent all my time so far imaging with an Alt-Az mount (ha-ha, Olly should be pleased to have another convert to what he would probably call a "proper" mount ). Wish me luck. Ian
  13. I can't compare the standard Canon response to that of the Fuji, but I must say I've been very surprised and pleased with the red response of my Fuji XT-1, not withstanding the lack of astro utilites and the processing complications with the Fuji X-Trans filter array. I've used it with Alt-Az imaging which involves taking a lot of short subs, so conversion and storage has been important. I originally converted them all to DNG using the Adobe raw file converter, quick batch processing too. I now use AstroArt for the calibration and stacking. See https://stargazerslounge.com/gallery/image/31949-flame-and-horsehead-nebulae-ii/ That's 122 x 30s subs, but it could do with more! However, the XT100 has, as far as I am aware, a standard Bayer filter array, so shouldn't really present a problem so long as the RAF is recognised. If you use DSS, make sure that you are using the latest version. Ian
  14. Well, I ought to thank you for that. Interesting though, it's sat there for many weeks without a sniff of interest, and I was surprised to suddenly get posts. Ian
  15. Thanks for the heads-up Dave, but you really ought to correct your web address Ian
  16. It is a much cheaper alternative to Photoshop for general photography use, for which it appears to have found many friends. I don't use it for astro, but Nik Szymanek has an 'Imaging Masterclass' on using it in 'Asronomy Now', starting January. There was a similar question posted on this site recently. Do a search; there are quite a few threads. Ian
  17. The device itself was bought from FLO in March 2017. It is still available, I haven't got around to putting it on the well-known auction site yet . Ian
  18. Amazing! Looking forward to seeing a mosaic covering the whole of the Orion region ;<) Ian
  19. That's a very sensible approach Bishkek, university life demands a lot in all sorts of ways. Good luck with your studies! Well, in a way that doesn't necessarily help. I tend to go through my subs and only stack those where I think there is minimal streaking, although I did use DSS originally. I found that there is quite a variation in sub quality with my Nexstar mount. You can only get out what you put in! Also, I'm not sure how you are using PS, but you ought to be stretching linear data and certainly not JPEGs. In other words, you should be stacking the RAWs. Is that what Sequator does? Photoshop can be successfully used (as can the free GIMP program), although I've not done so. I use Startools, a very powerful program but not expensive. However, you might not like its modus operandum. Ian
  20. Heard about this on the radio this morning. https://www.pbs.org/newshour/science/biggest-explosion-seen-in-universe-came-from-black-hole Absolutely staggering. Sorry if this is old news or in the wrong section! Ian
  21. I think you are giving me more credit than is due! I hadn't actually taken the step to think of the cable as the filter . All (still) interesting! But I still don't have my head around Smith charts - that'll need some serious little grey-cell study. Not sure that I follow the T-piece connections though, I thought when measuring cable properties it connected between the two terminals, but if you are checking out the resonance nature you'd connect just to S11. Need to look up the tutorials again. What I've done so far has all been a bit rushed as time hasn't been plentiful recently. Keep up the good work . Ian
  22. Well I find it interesting! Can't explain it, but it does mess with my mind . That Smith Chart trace is bewildering. But why does the addition of the coax give rise to this? I suppose that 'off-tune' the impedance of the antenna ceases to be purely resistive, and this must interact somehow with the reactive impedance of the co-ax. It might be interesting to see what the response of the co-ax would be on its own, say terminated with a 50Ω resistive load, or shorted, or whatever. I wonder what the natural resonances of the cable would be? I suppose that one should use a passband filter somewhere in the receiver, or ahead of it, to minimize breakthrough from the signals either side of the desired band. Ian
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