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SvartSork

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About SvartSork

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    Nebula

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    Male
  • Location
    Stockholm, Sweden
  1. SvartSork

    The "No EQ" DSO Challenge!

    There is actually a trick to get around this problem.
  2. So happy to be part of this competition I think the entries speaks for themselves - short exposures can achieve wonders!!
  3. Thanks Mark! I have another version with almost double number of subs that looks much better: Cant use it though since half of the subs are from april
  4. Here is the full set of lights and darks if you are still interested (or someone else is). It is 2 GB compressed I used 553 of the lights subs but there are some hundred more in the ZIP file. Just pick the ones with best FWHM and score and you should have roughly the same set as I used in DSS. https://dl.dropboxusercontent.com/u/26920912/SGL_M51.zip Thanks!
  5. @AKB ok will do. Just that it will be several GB in size so need to find somewhere else to upload it I'd say that is the main drawback of short exposures - you need a lot of disk space and patience while stacking..
  6. Thanks! Yes, I was skeptical as well, but truth is I have had so much fun ever since I got this camera I did at lot of testing in the beginning, more information in this forum thread (sorry swedish again): http://astronet.se/phpBB3/viewtopic.php?f=15&t=14495
  7. Thanks a lot! The reason for short exposures is that it makes everything so much easier and less expensive. Since these new CMOS cameras have so low read noise there is no need for long exposures that is required with most CCD cameras. Long exposures either requires guiding (which is a pain in every possible way not to mention an extra expense) or a mount that costs a lot of £££. You could even use an Alt-Az motorised mount to do short exposures Another good thing is that it has made it possible for me to image even on nights with windy weather. Sure, I have to throw away a couple of subs those nights but imagine the pain of trying 5 minute exposures and have them ruined by a gust at the last second, NOT fun!!
  8. Seeing was actually quite good this particular night so decided to image my favourite galaxy M51. Here are the acquisition details: Date: 2017-05-02 Mount: EQ5 Pro Scope: SkyWatcher 130 PDS Camera: ASI 290MM (from FLO earlier this year - love it!!!) Lights: 553x8s Darks: 173x8s Gain: 400 Binning: None Post processing was done in DSS and then GIMP. Also used an application I wrote myself to remove the background gradients and ampglow. It is similar to how DBE works in pixinsight but less advanced of course. I have a thread over here about it (sorry in swedish): http://astronet.se/phpBB3/viewtopic.php?f=13&t=14890 I can upload a ZIP of the raw files if anyone would like to try out some short exposure image processing Also have an image over in the huge 130PDS thread that uses these subs along with some from april (so can't use that image here...). It does look better with less noise.
  9. SvartSork

    Imaging with the 130pds

    Love this little scope Recently I have been trying out some short exposure imaging with my new ASI290MM camera (uncooled). Love it so far and can't say I miss fiddling with guiding and PHD... The seeing was cooperating for once which was nice so set my eyes/scope on M51, my favourite galaxy. 1117x8s exposures. No bias, darks or flats used in this image and didn't use any coma corrector. Stacked in DSS and processed somewhat in GIMP.
  10. SvartSork

    Imaging with the 130pds

    Hmm, yes you're right! Is this one better?
  11. SvartSork

    Imaging with the 130pds

    And another closer one: M45 Image stacked in DSS from 33x3 min subs at ISO 1600 with Canon 500D. Post processing in StarTools and GIMP.
  12. SvartSork

    Imaging with the 130pds

    Some more DSOs. This time NGC891 and the Abell 347 galaxy cluster. Image stacked in DSS from 107x3 min subs at ISO 1600 with Canon 500D. Post processing in StarTools and GIMP.
  13. SvartSork

    Fireworks Galaxy NGC 6946

    Thanks Dimitris!
  14. SvartSork

    Fireworks Galaxy NGC 6946

    This was one of my first targets when I started with AP one year ago. Made a lot of mistakes then so decided to give it another try Cropped version: Imaging telescopes or lenses: SkyWatcher 130/650 PDS NewtonImaging cameras: Canon 500DMounts: SkyWatcher EQ5 Pro SynscanGuiding telescopes or lenses: Orion Mini 50mm Guide ScopeGuiding cameras: Orion Starshoot autoguiderFocal reducers: Baader MPCC Mark IIISoftware: GIMP, Deep Sky Stacker 3.3.2, BackyardEOS v3, StarTools 1.3Resolution: 3092x1993Frames: 83x180"Integration: 4.2 hoursData captured on 2015-10-09, 2015-10-10 and 2015-10-11 using ISO 1600.
  15. SvartSork

    Pretty Deep Maps v0.2

    Excellent work Martin, thanks. Have been enjoying these maps for some time now. Btw, this thread doesn't get nearly the attention it deserves me thinks. Looking forward to the v0.3 maps
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