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johnrt

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johnrt last won the day on January 31 2017

johnrt had the most liked content!

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    http://cloudedout.squarespace.com

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    Sevenoaks, Kent

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  1. Being on furlough from work has meant I've been able to put some effort in to some Raspberry Pi projects, but not astronomy related unfortunately as I had to retire due to some very large trees. Here's my Pi 4b 4gb with a fan hat & rf transmitter hat on top. I've been working on a project with 2 radio controlled sockets to control my darkroom enlarger and safelight from the Pi. I used Node Red which is a very simple and intuitive programming environment that works well for this type of thing. Here's my control dashboard that I can access from my phone when I am printing. The recent addition was adding the f/stop readouts that calculate 1/4 stops of light on the fly based on the base exposure time set by the user. The time can be set in 10ths of a second and the run switch activates the timer, switches the socket on, counts down then switches off again. Great fun John
  2. Always looks like a giant fluffy pillow when this is done right, very nice.
  3. Very impressive, I've not visited the DSO imaging forum for a few years and you have certainly upped your game while I have been away. Beautiful image.
  4. Ahaha! More galaxies than you can throw a stick at! My kind of image
  5. Big Sur running on my new M1 Mac mini, really fast and the mini is barely breaking out the fans for anything I throw at it. Not running any astro apps though
  6. Hello, Nope, never had a problem with this sort of thing. I used to bin all my RGB 2x2 and shoot a master flat using the Lum filter only at full resolution and then use Pixinsight to register it to the binned images. Sorry I can't be of more help. Would have to be a fairly bright red light shining directly on to the scope from somewhere to be a light leak.
  7. I used the 1.25" Cheshire back in the day when I was using my 6" RC.
  8. G'day Kirret, Stick to narrowand imaging with the modified DSLR, you can get a clip in Ha filter and extract the red channel of the image to get a pretty decent mono Hydrogen alpha image. How is the mount doing? Have you got it up & running now?
  9. It’s been such a long time since I had a go but I may well take you up on this tomorrow. Great image by the way.
  10. Erm no, I don't agree. If you are making a purely RGB image then you are creating the colour, not adding it. Every colour image in photoshop is made from 3 channels applied to the red / green and blue. You are creating these channels yourself with the use of filters & simply applying them to where they belong in the software to create your colour image. You are only adding colour to an image of you start to use Luminance. Yes Pixinsight can also do this, use the channel combine tool.
  11. Oh, I imaged this galaxy pair last year or the year before, can't quite remember, but had no idea there was a planetary lurking right next door, very interesting!
  12. You use a software program such as photoshop and place the aligned mono channel from each filter to the corresponding channel, and you have a colour image.
  13. Smashing! 5 minute subs seem a little long, I thought the whole point of these new CMOS chips was that your could take lots of very short exposures, rather than the more traditional method of 10/15 longer subs?
  14. Are you going with an Altair pier? They really are great quality and very easy to install. I can't recommend them enough.
  15. The clouds have parted for a little while, so it's now all aligned and ready to roll
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