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kirkster501 last won the day on April 30

kirkster501 had the most liked content!

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About kirkster501

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    Red Dwarf

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    My Children, Cycling, Listening, Thinking, Counselling, Cancer patient care, Conversation, Science, Astronomy, Computers, Karate, Piano (grade 3), Self Defense Expert, DIY, Bonsai trees, Travel and Holidays
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    Radcliffe On Trent, Nottingham
  1. kirkster501

    USB port on my Canon 450d :(

    Thanks. I removed the filter from my 1100D and binned the 450. Shame, had I known I could have brought it over, I am in Lincoln loads.
  2. kirkster501

    Mesu 200 pier

    So the order of proceedings coudl be swing by Marks' place, pick up the MESU pier to take to Olly's and then pick Sir Isaac up and take to a new owner back in Blighty. What could possibly go wrong in a Sunday afternoon drive?
  3. I need to have my over-the-top glasses on (because I wear contact lenses) to read the star map. Then take them off again to look through the EP. I'm finding this increasingly complex and irritating. The alternative is to not wear my contact lenses and to wear my bifocals but I find it hard to look through the EP with glasses on; sort of presses the glasses against your cheeks and face and is also annoying and I find it hard to see the object in the EP. What do you guys do?
  4. kirkster501

    Alan Bean, 4th man on the Moon dies

    He was one of the most down-to-earth astronauts. Seemed a real gentleman and extremely modest. RIP Alan.
  5. kirkster501

    The Coma Cluster - A Whole Lotta Galaxies

    Wow, 19 hours of integration time! Well done, takes commitment and dedication to achieve that in our country, especially in Spring/Summer when there isn't much darkness to work with.
  6. A lot of people keep the *calibrated lights* from a run and once they have done the preprocessing to get those they delete the flats and original subs. I don't quite have the confidence to do that just yet at this early-ish stage of my AP career and I keep everything for now. But by keeping the calibrated lights only, filter by filter you can organise and reduce your datasets and chuck out a lot of junk. M51 > 28 May > ATIK > Luminance > Sub1, sub2 etc And because I have CCD's where I can control the sensor temperature I use master BIAS and dark at each binning level. So no need to do those every session and you can spare the gigabytes needed for those too. But be sure to refresh the BIAS and dark every couple of months (which I have forgotten to do). My new rule is that at the start of ever other month (Jan/March/May etc redo the darks and BIAS - 30 darks and 100 BIAS to create the masters. As Robin and Graeme have said, you can buy huge levels of storage nowadays cheaply. I remember my first Western Digital Hard drive that was 40 megabytes in size and cost £450 in 1991..... You can now get a 8 TERAbytes - 200 thousand times more - for £150 or so. Hope my experience/rant/lecture helps!
  7. I don't think there is any limit to what you can do. You can create process containers and the Pixinsight platform individual processes such as Image Integration etc are accessible via their API to pass parameters back to some calling application held in its own container. So the calling application could be called "AstroPhil" and you would then pass back and forth the various parameters to the Pixinsight processes to do what you want the "Astrophil" process to do. You can knock something together in Javascript or C+ that passes your image parameters to each process process by process from your own container application. This is explained in the Pixnsight documentation. The Batch Preprocessing script does something similar (as do all the scripts). BPP is a "script" though, it does not get down to machine level. The question comes back to, as others have said, why would you in the context you set out on your top post??? Every picture is so unique that it is impossible to create a one-size-fits-all template in the manner you envisage.
  8. kirkster501

    The Coma Cluster - A Whole Lotta Galaxies

    As I have said I other threads, think of the planets life and civilisations present in that majestic picture. A great picture. I am working on my own version as well.
  9. kirkster501

    Sh2-140 and Abell 1656 - First and second light

    Superb Jens! Love the Abell galaxy clusters. You should do 2151 too.
  10. kirkster501

    Remaining dust bunnies, processing them out

    There is a "sheen" to them Olly that I think could be slightly reflective. I am clutching at straws to be honest since I cannot fathom why I am getting those large donuts that are not processing out. I will flock the adapters with flocking material that i have ordered off of ebay.
  11. kirkster501

    Hardest Messier object?

    I actually think M101 is quite hard, it is so faint and diffuse and the slightest high level cloud obscures it.
  12. kirkster501

    Remaining dust bunnies, processing them out

    I've stretched the flat to within an inch of its life. Those large, faint circular bunnies look pretty darned consistent in size to me and as Olly says, they must be quite close to the sensor. And they look almost like they are in a line. I reckon I have internal reflections going on here caused by the FF...... EDIT: I just checked this again. Before I installed the the FF the inside of the TEC tube is as black as your hat - pitch black. The introduction of the adapters needed for the FF to mate to the camera/EFW2 and 2 nose-piece at the required distance has introduced some semi-glossy surfaces with the two Astro-Physics adaptors that I think is shining back onto the inner FF glass and causing a reflection with the brighter light needed for the flats. I am convinced this is what is causing the problem. I need to get some flocking material and blacken everything aft of the FF. Will report back.
  13. kirkster501

    Remaining dust bunnies, processing them out

    I am reshooting all my calibration frames and will just have to live with the fact that the M101 and M51 will have to be cosmetically fixed in Photoshop (aka "cheat" ). Photoshop is a wonderful thing, you ought to see my six-pack abs..... The FF from TEC is spot on immaculate optically. I am wondering, though, if I might need to matt blacken the two adapters I needed to adapt the scope to the FF 85mm backfocus and maybe even blacken the FF metalwork??? I wonder..... It's all that shiny black metal and with extra optical surfaces and bright light to create flats, I wonder if I've had some reflections in the tube. I never had this problem before the FF.
  14. kirkster501

    Remaining dust bunnies, processing them out

    Used the manual way of doing this in Pixinsight as opposed to using the Batch Pre-processing script. Same results. I think I need to completely redo my calibration frames and start again and cosmetically fix this luminance. I don't even think the vignetting is being completely removed - it is there in the corners still.
  15. kirkster501

    Remaining dust bunnies, processing them out

    Wow, thanks guys/Olly. What a wealth of genius this forum is. Run that past me again @ollypenrice please? So you use a master BIAS as your dark for the flats? Do you not use a BIAS as a "bias" for the flats as well? You develop this flat before you start fiddling with lights? First, the focus between lights and flats is pretty darned close. The range of Lakeside focuser movement due to temperature change on my autofocus rig in the FITS headers is 11330 > 11310 - so the flats were taken at 11320 - the median value. Lights, darks, bias all done at at -15C CCD temperature. The BIAS and Darks are three months old but surely the BIAS and DARKS - even old ones - could not cause this effect, they'd cause more general sensor noise, not stop flats working? I read the temperature does not matter so much for the flats. I could not get the CCD on the Atik to -15C and only to -9. I really don't think this should matter so much? Should it? The FF of the TEC is brand new and immaculate. It has been inside the focuser as soon as I got it and the ATik 460 has not been off of it. I concede probably time to give the filters a clean and Atik 460 window perhaps. But the flats for this run at least should take care of it... I have done several sets of flats and varied the ADU from 7000 up to 49000 in increments of 7000. All of them show this "arc". So the lights are not being properly calibrated by the flats. Anyway, for now, I will use Olly's cosmetic correction fix since I am loathe to bin and otherwise good luminance data set. I will reshoot my BIAS and Dark calibration frames. And I will ALWAYS from now on do the flats at the latest the following morning. So that leaves what? The only thing I can see is something to do with my calibration software? I may give the AstroArt trial a go. Or Deep Sky Stacker.

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