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johnfosteruk

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Everything posted by johnfosteruk

  1. Amazing, even more amazing to think that it will take c. 70000 years for Voyager to reach our nearest stellar neighbour. I wonder if any passing travellers will intercept it on the way?
  2. An outstanding image, all the more impressive for being manually stitched!!!
  3. This is a fabulous build James, I don't know how I've missed it until now.
  4. And 3 pairs of underpants.
  5. I’ll wear long sleeves to cover the scars from mine last year. I’ve almost recovered mentally tho!
  6. It clearly is, on the basis that you managed to keep it all in one place on the image, so to speak. I clearly did not. Tom's on the other hand are marvellous, good to know it can be done manually, I'll have another go soon.
  7. Stu, you're going to have a great time. Enjoy it.
  8. The sw130 does have the stop. Put your end cap on the telescope, remove the little cap from the middle of the main cap and bobs your uncle, your F5 scope is now F12 or there abouts. Obviously with the smaller aperture you lose some resolution but there’s a good compromise to be had when observing the brighter lunar phases.
  9. I should also add that once you’re focused on your star of choice, everything else is then in focus - stars, galaxies, the moon, planets etc. Everything, from the moon, to the farthest deep sky objects are essentially at ‘infinity’ as far as optical systems are concerned and therefore effectively at equal focus distance. This also means that your focus point with any given eyepiece is always at approximately the same position. This will vary from eyepiece to eyepiece though unless your eyepieces are parfocal which means they’ll all focus at the same position. Minor adjustments are only needed to compensate for slippage/slop in the focuser mechanism and ‘breathing’ due to temperature fluctuations.
  10. Yes. All stars, no matter how bright or how large, are points. So as HK says, when at its smallest you are focussed. A great technique to assure perfect focus is to adjust the focuser until you think you’re perfect then keep going just a little more, go past focus the other way so to speak. Then go back the way you came. Because your star image gets larger when you go past focus in either direction this helps to confirm you’re all tickety boo by helping you judge where the ‘middle’ is.
  11. Here you go, it's definitely doable. I downloaded the video from YT and had a play. A quick run through Pipp to stretch the black and white point, then another run to align. The proms were easier than the surface detail but there's the very faintest of hints of a filament lower left and I got it almost aligned on that. The surface stack was a little blurry as the alignment wasn't perfect but a quick trick with a duplicate layer (lighten mode) and the offset filter in Photoshop to take away some of that blur gave me back some detail. The proms were a doddle, almost perfect alignment, and then standard blending the layers to put it all together. Could do better with more fettling I'm sure
  12. Sorry I've only just seen this, I've barely looked in Solar this summer! Charl's right that I've stacked untracked vids Chris. What will probably help is doing 2 runs through Pipp. One to stretch, then one to align. It'll probably only work on the prom exposure due to lack of much contrasting detail on the surface detail end, but it's worth a go anyway. So first you run it through selecting stretch white point and stretch black point. White wants to be about 75%, black defaults to zero. Then run the output of that through with lunar/solar close up checked to align, moving the alignment area box over a suitably contrasty detail to give it something to 'track' I think that makes sense.
  13. How very dare you sir! I’m holding you fully accountable if it is. Recompense will be expected.
  14. Nice report John. I love observing with my 10x50, and my 8x40. Put 'em both to good use under Cornish skies last week, even with the moon out for most of it! As you say, hassle free, and simple.
  15. I hope people still have space to bring cake what with all this red tape they're bringing!
  16. That's the spirit Ray. Last year was my first star party and I was very apprehensive, especially because my wife came (as she is this year) and she was quite dismissive of the red light policy (in a loving, caring mild fun poking kind of way she assured me) But we painted a very low power torch with a few coats of red nail polish, same with a camping light, plus we purchased a red rope light for inside the tent (image attached) and I had no complaints at all. If I had, I'm sure it would have all been very friendly, I didn't see a single pitchfork
  17. Cracking find Neil, adding this to my diary.
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