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chops

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About chops

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    Everything really, it's all interesting
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    Cornwall

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  1. Goodness, a zero backfocus Binoviewer... thanks @catburglar - it looks like an amazingly useful bit of kit... would love to turn the Dobson into a binoview too... but ... I've *only just* bought the WO binoviewer.. so don't feel I can justify £430 ... you first! Please do post up if anyone owns the Orion Premium Linear BinoViewer for Telescopes
  2. @Highburymark thanks for the eyepiece extender tip. It arrived yesterday and I tried it this morning with the Televue 32mm Plossl. Significant improvement and much more comfortable. I still found myself reaching for the old (Taiwan model) Meade Super Plossl 4000 26mm which works well and, of course, wishing desperately that the Binoviewer would work with a diagonal and the SS60. I still also prefer the views through an Explore Scientific 62 degree 24mm... but there’s no doubt the Televue 32 is sharper and has more contrast. The pic shows white light ETX125 and the SS60 with the above config
  3. Has anyone managed to get a binoviewer working with a Daystar Scout SA60? Apologies in resurrection of an old thread but, similar to your experiences, I’ve only managed a ‘straight through’ configuration: with a William Optics Binoviewer and WO dielectric diagonal and the SS60, I can’t reach focus and, by goodness, the view is so much more pleasant through binoviewers, but as @Geoff Lister says above, literally a pain in the neck and difficult when aligning in a direct plane to the sun. Plus the concern about eyepieces or binoviewer dropping out of the scout unless the knurled nuts are roared
  4. @Highburymark thank you, it’s great to hear. Re your sleeving down, I saw an interesting post here, or cloudy nights of someone using a rubber cup of some sort to shim down the objective lens to increase the focal ratio to good effect. If I find it, I’ll post it up. You’re right, the proms on this scope are great; I have little to compare it to, but there’s less surface detail than I can see in the prominences. That said, image attached (that I’ve pushed quite hard), from the same AVI which produced the proms above, that shows a little detail, but I can’t push the magnification much at all
  5. @Highburymark many thanks, that makes sense. I wonder why Televue don’t simply include a longer fold up rubber eyecup, which would achieve the same thing for many of us wondering whether we’ve been sold a pup. Yes, contrast is undoubtedly better than the Meade Plossl I’ve been using and sharpness noticeably better too, but without lifting my eye another few mm off the eyepiece (which makes it useless for solar viewing because of stray sunlight) it’s nothing like as useable as the cheaper eyepieces. I’ve been looking at a Dioptrix, which I assume will achieve a similar effect to the eye guard
  6. Thanks Nigella, I’ll try sharpcap too. I’m amazed at the detail seen from this little and (relatively) inexpensive Ha scope. Viewing a changing prominence is a true pleasure (not that much was visible today) and the detail from some of these stacked frames almost reflects what it’s like to observe (strangely, the other way around from DSO viewing).
  7. Thanks again to you both. I've downloaded FireCapture and will use that next time the sun's out (I used a binoviewer for a short while at lunch today). I also found another AVI I'd taken and tried again with that. The 200 point size, for whatever reason, doesn't work - but 104 does. Results attached for interest ('conv' / AutoStakkert sharpened version, although it appears output both this and the un-postprocessed version to). Next task: improving the attached (un-postprocessed / enhanced) image using ImPPG (or GIMP) and debayering it... any hints please? : -D
  8. Thanks @Nigella BryantNigella, I'll try that. I also took a couple of AVIs at the same time and here's that result of that stacked with the previous settings (as per image). It's not processed at all other than, I assume, Autostakkert placing 'conv' in the file name means that AutoStakkert has sharpened it (there's two versions output - one without this appended 'conv' and it's not as sharp as the attached). Sorry to ask so many questions, but it's great to have the masters available to answer to us newbs. Do you debayer in ImPPG and what are the setting do you'd recommend on something li
  9. @Kitsunegari and @Nigella Bryant thank you so very much for helping; does it matter that I'm stacking PNGs, not AVIs and that polar alignment is poor? The 334 source images, of about 60Mb each, were captured in groups of 33, over 7 minutes. Polar alignment was only approximate, so the disc (partial disc) drifted across the screen during those 7 minutes. Changing Autostakkert to suggested settings gives a slightly different effect now (please see attached pictures, showing both settings and resultant image) , but I suspect it's still not yet what I should be aiming for : -D Your advice is
  10. @Nigella Bryant, Mog, do you happen to know what I've done wrong here please? It seems to have been caused by poor tracking, across 300 images over about 8 minutes, but I assumed that AutoStakkert's planetary mode would correct for this movement, aligning the disc, in the same way that deep sky stacking works. I've tried with and without the 'double stack reference' option, but this makes no difference.
  11. Thanks for the report, M46 and M47 both fit into the 4 degree field of view of the apollo 15x70s: it was fabulously clear last night and I had a similarly wondrous experience to you, except half a bottle of brandy made the monopod wobble a bit...
  12. thanks @mog3768 and @Nigella Bryant your images are truly stunning. I didn't have much luck last time I tried Autostakkert 3, but suspect it was my own exposure problems and lack of detail. Do you caputure AVI or stills and is it with ASI Studio, in planetary mode please? Also, what sort of gain on the ASI178 please Nigella? I think my image above was 39ms at 150 gain - it was at this point that the blue line on the histogram dropped down to zero, but I'm a beginner when it comes to imaging, having only done limited DSO work recently (I gave up in the 2000s when trying with an SLRs became to t
  13. OK, I admit it, it's all too easy to be carried away by solar fever, aperture fever, DSO fever, astrophotgraphy fever etc. But ... when all's said and done, if I had to swap *everything* for just one piece of kit, it'd be a pair of 15x70 on a clear, calm night (all too rare in W Cornwall)... M36m M37 and M38 in Auriga (plus half of a bottle of brandy) and what more could anyone want. (except, perhaps, sweeping left and right a little). Thanks Steve, for your indefatigable support of the simplest and best.
  14. By way of an update, I bought the (Daystar recommended) 32mm Televue Plossl to use in place of the 24mm 68 degree Explore Scientific, 40mm unbranded plossl, and trusty 26mm Meade 4000 super plossl LP I've been using. However, I'm slightly disappointed so, by way of comparison: 1) The solar disc size is ideal in the TV 32mm EP, compared with the 40mm and 26 or 24 mm. This is irrespective of TV's 50° aparent field of view, versus the 24mm's 68° AFOV (the 68 degree is easier to 'use') 2) Contrast is better than the other plossls, but only marginally better than the ExSc 3) How
  15. Here's the same image, but I've spent 45 seconds increasing contrast etc on an iPhone 'post processing'. A much more pleasing, but still very simple single shot image.
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