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Adreneline

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About Adreneline

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  1. IC405 Flaming Star - 100 mins of Ha and OIII

    Hi Mike, Thank you for your kind comment. The image above is rather cropped. These are the PixelMaths variants from PI in case you're interested. If only the coulds would clear I would try to grab some SII although I'm not sure if it will do any good. Short of that an whole lot more Ha and OIII - and a wider field of view - might do the trick. I also imaged it with my Canon 70D but my processing skills are not good enough to extract the image - assuming there is something there to extract! Adrian
  2. Hi Everyone, With the weather as it is I guess anything is better than nothing. This is 100 mins of Ha and OIII; Ha was taken pre-flip, OIII taken post flip. Subs are pre-processed in PI (Flats but using MasterBias as Dark), stretched in FITS Liberator (a first for me so not sure I've used it to best effect) and then combined using Ha-OIII Bi-Colour Process in Annie's Astro Actions in PS; there is no noise reduction at all. I clearly need several hundred more minutes of Ha and OIII and a bit of SII might be helpful as well! Thanks for looking and any comments or suggestions would be gratefully received. Adrian
  3. Today's APOD of the Bubble

    Congratulations! An amzing image. Adrian
  4. California Nebula 300mm tele mosaic

    Hi Göran, I got to say that if you want a quick result that is surprisingly good then it is worth a look at Microsoft ICE. I messed around with a four frame mosaic of the Flame and Horsehead in PI for ages and although I am sure that in experienced hands the results are excellent if you want a "quick look" result to see if it is worth further work then ICE produces an amazing result with no effort at all - feed in the separate frames, press 'Go' and bingo - out pops a finished end result and I am blowed if I can see the joins! No need to mess around with LinearFit - ICE sorts it all out. This is the tif I produced with no further processing. The 'seeing' was terrible the night I did this and it was another 'random' mosaic; as an image it has everything wrong with it but it shows what ICE can do and whether it is worth investing lots of effort in PI. Hope you don't mind me adding it to your thread; I've uploaded it as a tif so the image does not confuse your NGC1699 thread. Adrian Flame-ICE-four-frame-stitch.tif
  5. California Nebula 300mm tele mosaic

    I have a Win10 install on my MBP running under Parallels and it works a treat and is a much cheaper option than buying a dedicated laptop. It also means that my Pictures subdirectory is common to both machines so no messing around with usb drives etc.; I can easily move image files into PI or PS on the Mac. In fact I also have EQMOD, SGPro, BYEoS and PHD all running under Parallels but tend to use a dedicated Intel NUC for driving the scopes and collecting images. One of the advantage of running Win10 under Parallels is that Win10 will never do a 'random shutdown / update' in the middle of night - unlike Win10 on the NUC. You can definitely go to bed and know it will keep going; in fact Win10 crashes are almost non-existent under Parallels. Explain that one! Good luck! Adrian
  6. California Nebula 300mm tele mosaic

    Hi Göran. I've not tried the 70D on the ZS71 to date; my efforts have all been with the ZS71 and 428ex. Mosaics are amongst the many skills I still have to master in AP - I've just about managed to cobble together a four-frame Ha of this nebula but it is a bit random! Maybe Registar could work wonders with an image from the 70D and my random mosaic. Now my son has just bought a Sony A7s - putting that on the end of the ZS71 might be fun!
  7. Rosette (NGC2239) - LRGB + NB

    Hi Wim. I contacted FLO and advised them of the problems I was having and they offered to send me a replacement Blue filter; as soon as I used it the HFR figure dropped from the previous ~2.5-3.0 down to ~0.8-1.2 - in line with the figures I was getting for the L, R and G filters. To the naked eye the two filters appear identical but the original clearly has something that is not quite right!
  8. California Nebula 300mm tele mosaic

    Hi Göran, The only problem I have with your image is that it makes my efforts to image this nebula look woefully inadequate. I think it is amazing! The more widefield images I see the more I like them and I really like yours. Thank you for sharing. Adrian
  9. Rosette (NGC2239) - LRGB + NB

    Thank you for your interest in the image. All the pre-processing is carried out in PixInsight along with alignment of all the component images. I was very selective with the lights so this is 20 x 180s each of L, R, G and B with Masked Stretch and Local Histogram Equalization. The RGB are combined in PixInsight but with no noise reduction. The NB is 15 x 600s each of Ha, OIII and SII, again using MS and LHE but no noise reduction. I then combined these using a Hubble Palette in Photoshop. I then took the RGB and HSO and combined them as layers in Photoshop using a Masked Layer. As if that were not enough I also used the Ha to enhance the Red using a Lighten layer, and my Luminance data in a separate layer to try to enhance the detail. I played around with the opacity on the layers for ages until I came up with an end result I found pleasing on the eye and which combined the essence of the RGB and HSO. I hope that makes sense! Adrian
  10. Hi Everyone, I posted my first Rosette in December last year, a product of LRGB and Ha. It suffered from 'blue bloat' and the problem was finally identified as a dodgy Blue filter and thanks to the outstanding customer service from @FLO that problem is now sorted. Since December I have been somewhat obsessed with collecting more LRGB and Ha, OIII and SII data and experimenting with combining it all in a a variety of different ways. If there are rules then I have probably broken every one of them but this is the end result that I find most pleasing. I sometimes wonder if imaging DSO's is science and art in equal measure so I've allowed the two sides of my brain to come up with the image below - I hope you like it. As always I would value any advice on how it might be improved. The 'blue bloat' is sorted and I think the star colours are acceptable, although I have probably been a bit heavy handed with supressing noise. Thank you for looking. Adrian
  11. A stunning image. May I ask which dslr you are using? I tried a few images with my son's new Sony A7 last night but it was just a quick trial. I would be over the moon if I could get this type of result. Thank you for sharing. Adrian
  12. The Rosette Nebula

    I think this 1.2/1.3 figure came from a Harry Page video I watched - one of his PixInsight tutorials. HTH Adrian
  13. The Rosette Nebula

    LHE is a tricky thing to use. Like most things I have found it is far too easy to over do it! I feel I've had more success since I've limited Contrast to a value of 1.2 or 1.3; the default value of 2 seems to be far too aggressive. I typically use 1.3 and 128 as a starting point and then go from there. I cannot remember where I read the advice on not exceeding 1.2/1.3. I've been doing exactly the same this weekend - processing Ha, OIII and SII of NGC2239 collected since the beginning of the year - using MaskedStretch and LHE. My dilemma is knowing how best to combine it all! I've not carried out any sharpening on the individual channels, however, I have performed some careful detail enhancement using MLT with a combined Range and Star mask. Good luck! Adrian
  14. CCDSharp - help please

    Hello Steve. Thank you - it does help a lot - and poses just one question please. The linked document seems to imply that you apply the CCDSharp process post preprocessing ("dark subtraction, flat fielding, and perhaps warm and cold pixel removal") but before subs integration - so on the calibrated (and I presume registered) subs. PI texts I've read imply post integration on linear DBE/ABE master and that is what you seem to recommend as well if I've understood correctly. Any thoughts? My experience with deconvolution todate is only with PI - which I find quite hard to control - which is why I was interested in trying CCDSharp. Thank you. Adrian
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