Malpi12
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Posts posted by Malpi12
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argh yes , all is not well
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Did I hear " an anomaly " on the
edit to complete my post ! :- on the Virgin 'tube.
I was outside viewing a moon halo and 1/2 listening to the 'tube playing indoors. Sad
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12 minutes ago, Stu said:
Clear here currently
I'm not saying here high on my SW facing hillside, , in case the cloud gods hear me, . .where is my rabbit's foot , ,
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6 minutes ago, Stu said:
Looks to be level at 30000 ft currently. Anyone know what height it launches at?
I think Sky News reporter said 35,000
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CH4 News jusr said launch time about 11pm
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23 minutes ago, tooth_dr said:
Is it possible to see this as a dot moving across the sky like a satellite ?
The rocket launch is far enough from land such that quote" ,, the blast zone, in the event of catastrophic failure, poses no risk to people or property ,,," last night on telly! Also shown was one of the ( 9 ? ) mini-sats being one-hand held so even with its small solar panels extended it (they?) is probably going to be dim.
I have not got the dimensions of Prospero to hand but I think it was a lot bigger than this (these) and the rocket was very big !
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5 hours ago, DaveL59 said:
well it is our first launch into space proper...
Ummm, not really !
Our first proper British rocket (Black Arrow*) launched satellite was the British made Prospero.
Launched from a rather large aircraft carrier floating in the south Pacific,,, called Australia
And it was placed well high enough that it is still up there !* part of the Black Knight / Blue Streak experiments of the 1960/70s (violins) - I remember it well and still curse HaroldW et al. for cancelling the things (end violins)
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3 hours ago, Ratlet said:
should have tried paring them top to tail!
Ah! Thus creating an entangled pair !!
I used to think my wife was a witch because she could always find me a matching pair (accompanied by a "withering look" ) where I had previously failed miserably. Now I realise the look was that of a trained quantum physicist correctly observing the heap and thus collapsing the wave functions.
Always have plenty of freshly washed and dried wool socks that, at each session, two (see what I did there - avoided "pair") can be placed on each foot with wide shoes or boots.
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55 minutes ago, davidc135 said:
expect the corrector again to deal with the bulk of that.
I think that is what we are all expecting, but it was the question asked and it is an opportunity to find out ! You havn't got a spider you could lend him ?
And setting up the experiment would take his mind off the pain of what just happened ! 😢
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49 minutes ago, symmetal said:
how long it takes for the replacement
Now I am conflicted : between wishing you a speedy new corrector and , , long enough to conclude the experiment for the sake of human understanding
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53 minutes ago, davidc135 said:
an 8'' sct
But I presume not a rasa with its special lens group ?
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11 hours ago, symmetal said:
likely sag with the weight
When I first had the thought my concern was how to support/attach the vanes without resort to drilling holes for bolts !! If 3d circles could be printed that is good - could the vanes be made of stiff material (conventional metal) and be included in the 3d plastic ? Perhaps like rebar.
No one (I imagine !) would want to take apart a rasa just for this, but here we have an interesting possibility, I am sure the rasa will get over the insult to its dignity when the new corrector arrives !
12 hours ago, Louis D said:I'm not sure how much the camera corrector lenses would help with the SA
Yes, exactly, and without needing to bend the sensor like we did with film in days of yore 🤣 One would think that SA was still easier to correct in a large dia. front optical. But who knows ?! with modern tech and clever design ? There was a time when manufacturing tech needed correctors matched to their primaries, but now I read that machine tolerances are good enough that that it is not needed any more. A bit like the change in threads from in-house specials to Whitworth
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On 27/12/2022 at 19:26, symmetal said:
broken corrector plate of my RASA
Oh dear ! or similar words.
Would it be considered a heresy if I were to suggest making some vanes for it, to support the lens assembly pro tem ? Only as a scientific curiosity of course just to see how much correcting it /is/was doing ?
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4 hours ago, imakebeer said:
Sequator ,,,and Siril
I agree Sequator is easy to get going, but (when I used it some time ago, things may have changed) it was not obvious at first that it was rejecting -and not giving a reason why- a lot of my subs. but DSS took them happily.
Siril has defeated me thus far ! probably because of not putting in enough effort since DSS is doing okPS I make beer as well
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Andromeda always steals the lime-light don't you think ? 😀 So here, for a fun extra, you also have got :-
M 52, Cassiopea Salt & Pepper Cluster, and
NGC 7789, Caroline's Rose Cluster !
1 hour ago, wesdon1 said:I have saved the raw files of my image
Very wise ! and I also keep the DSS autosave.tif and do all processing on it in Gimp.
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5 hours ago, wesdon1 said:
struggled endlessly trying to get Deep Sky Stacker processing software to work for me
software like GIMP,
Well done, nice one !
Congratulations on getting there in the end We've all been there, pulling hair out and muttering expletives over software. Took me ages to get DSS and Gimp sorted.Always good to get an unexpected bonus in another part of the frame, I discovered Andromeda in a similar way, using my Canon 60D with vintage prime lenses on fixed tripod.
Thanks for showing and as Carastro says, flats are good
However, dont worry, all is not lost for this one, you can construct an artificial flat with Gimp. I hope you dont mind but I have taken the liberty of a quick play with it just to 'whet you appetite' to get Gimp installedUsing a thing in "Filters" called a "Gaussian blur" make an extra layer and subtract it from the base image. (edit later : I can expand details if/when you get into gimp !)
There are always edge effects to be cropped out but in this case we would lose Andromeda so I have left them in !
The experts could do a lot with it.
The flat
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Hmmm.That didnt do much, just enough to turn my 50% clouds to 100% !
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I may be indulging in wishfull thinking ! but -
ACE (1hr uptream at L1) is reporting a large negative Bz, which is often a precursor to geo storms.
Worth keeping a monitor perhaps -
Apologies for not updating this topic earlier - every time I was about to update I got a few more lucky breaks in the clouds and more obs to process !
Anyway here we go with Oct and Nov additions to nicely fill in the gaps in the Sep lot.Of particular interest is the 26 Sep (green) obs half way down the decline that seemed displaced from the other greens in the slope. I thought at the time it was a rogue or my bad, but a month later (30 Oct, pink) suggested it was a real bump. 4 (blue) in Nov confirm the wiggle !
A google on "bump cepheid" is quite interesting.
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26 minutes ago, shropshire lad said:
do you have a link for this site please
It is from AuroraWatch UK at Lancaster Uni :-- https://aurorawatch.lancs.ac.uk/
An impressive magnetogram along with it as well !
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4 hours ago, Elp said:
It's also a good way of quickly going through a set and getting rid of ones which may have clouds in them.
Ah! good idea, I must remember that ! Previously I roughly pick, then do somewhere between 90% and 50% depending on condx
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Virgin's Cosmic Girl on its way over to Cornwall for Sept satellite launch
in The Astro Lounge
Posted
I heard commentary through 2nd stage 1st burn and into the coast phase, then my attention wandered to the moon, dont recollect hearing the start of the 2nd burn of the 2nd stage just prior to orbit injection. So maybe it was that burn that failed ??