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Dr Astronomy

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  1. Dr Astronomy

    astronomy photos

    As per Nicks post "Is there any chance you can create either a video or detailed step by step instructions on how you do just one of these." Here is the method I use in ap for narrowband processing and its output Hope this helps and feel free to ask if there are any questions!!! ap processing astronomy.pdf
  2. Dr Astronomy

    astronomy photos

    I am working on a pdf for this at the moment though may be some time Will post it here when complete
  3. Dr Astronomy

    astronomy photos

    Thanks all for the great responses. Light pollution is always a pain; you have to travel for very non polluted skies which are few and far between. Went to St Davids for a week to be lucky enough for the clouds to clear and get these shots. Modded Xbox cam should do the job, I did use similar long ago - pop it out of the housing and into an old 35mm film container and it fits a telescope eyepiece as well !!! Don't give up - wait for a clear night and go for it - 30x30s exposures should do the job if stacked
  4. Dr Astronomy

    astronomy photos

    Finally managed to get to a site near St Davids with some very clear skies. The milky way is now in an ideal position to be photographed and is enhanced by having a site with limited light pollution Here are the results - stacked in Astroart and processed in AP mostly using tone mapping The bright object in mars glow.jpg is mars and the reflection of the milky way can just be seen in the sea. Others just show what can be achieved - no gradient removal as the light pollution is so low The image called Milky is with 10x30s stacked at 8mm F4.5 The other two are specialist mono camera with c mount lens at f1.2 Hope you like them Clear Skies
  5. Dr Astronomy

    astronomy photos

    Things have come on a lot - I use a solarmax II which gives about 0.5A bandwidth and dedicated mono camera. I do have a permanent mounted pier system but most of my solar ones (and planetary for that matter) are taken with a portable kit. Well if you call 30Kg additional luggage just for my astronomy kit portable !? Suggest you leave London for a night and head off to the south downs with an F2 ish 30mm lens and give the milky way a shot. - lots of nice dark skies down there. Clear Skies
  6. Dr Astronomy

    astronomy photos

    I will have to go back through my old files and find Planetary images. The UK is a bit far north for most of the planets so I have some archived ones taken nearer the equator. In the mean time here are a couple of the surface of the Sun - H Alpha re-coloured ***please don't attempt to look at or image the sun without very specialised equipment.*** Clear skies
  7. Dr Astronomy

    astronomy photos

    M57 (Ring Nebula) from night of 19/5/18 The more I use AP for image processing the more I love it Hope you like it - can you find the very faint small spiral galaxy IC1296 just to the left of the main nebula?
  8. Dr Astronomy

    Blue artifacts when sharpening

    Thanks Sean - good to know its going to be fixed
  9. Dr Astronomy

    Blue artifacts when sharpening

    HELP! Please I am getting blue artifacts when developing RAW (.dng) images I get bring the DNG into the develop persona and develop as per the screen shot attached When I apply the development I then duplicate the background layer and go sharpen - high pass (7.5px mono) and change the layer mode to soft light The navigator shows lots of blue areas yet the master image doesn't - on exporting I get an image the same as the navigator image with blue all over it. The same issue occurs with live filter If instead of softlight I use hard light or overlay there is no issue. In 16bit mode there is also no issue As I prefer to keep images in 32bit until final export is there any way around this issue Thanks
  10. Dr Astronomy

    critique needed

    Hadn't thought of it that way - LOL It was originally walking right then as I pressed the shutter it turned to catch a fish. Just a lucky shot. I am going to re-work this one as the blue in the bushes isn't on the original image but has been introduced through 32bit processing. Thanks again
  11. Dr Astronomy

    critique needed

    Thanks Rick G This is at Bowling Green Marshes (Exeter UK) about 9:30am but still good light. And yes it is a Little Egret; we get a lot of them on the south coast now and not sure how they compare to the American ones
  12. Dr Astronomy

    critique needed

    I often take some nice wildlife shots and am looking for advice on how I might improve them. This is one of an Egret and whilst I like the subject I am not sure about the water definition. And yes - I have just noticed the blue in the reed beds Any advice would be much appreciated. This is also a crop from a larger image so I do have more of the ripples
  13. Dr Astronomy

    Astronomy macros

    Anyone used to astronomy tools in PS is probably used to removing stars from astro images and the advantages that gives. This macro will remove all stars from an image, the image should be RGB 16bit or Grayscale 16bit and have the background layer duplicated once before running. It will ask for black and white levels, the black can generally be left alone but adjust the white level up or down until all stars are removed. In general resize your image first to about 1000px wide and find what figures work for white level then run with those figures in your main image as this macro can take a while depending on number of stars, image size etc... It will also produce a spare channel with a star selection mask - ultra useful in astro photos. The starless layer mode can be changed to overlay, difference etc to great effect especially if opacity is also changed WARNING - if you make too many changes to the white and black levels before applying the rendering seems to slow down each time !? Would appreciate knowing if anyone can speed up the preview rendering Clear skies and enjoy star deletion.afmacro
  14. Dr Astronomy

    Astronomy macros

    Please ignore the file above as the file wouldn't upload so here it is again LUMINANCE SEPARATION.afmacro
  15. Dr Astronomy

    Astronomy macros

    I have been trying for ages to separate genuine luminance from master RGB image. This macro does just that job - load into macros . Once run you can turn off background visibility. It allows you to apply significant blur to the colour component without affecting the overall luminance Hope you find it useful Clear skies Luminosity Mask.afmacros
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