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About spaceman_spiff

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    Astronomy; Astrophotography; Computational Neuroscience; Horology; Classical music; Hiking; Jogging, PS4!!!
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    Bury, Lancashire

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  1. Off to France tomorrow. Can't wait! Staying in some dark skies around Limoges.

    1. jabeoo1


      Excellent area to visit.  Be sure to visit this place:

  2. From the album Photos from Bury

    Date 24/05/2017. Part of the North American Nebula. Weather: Probably the best conditions I have ever had imaging, very still atmosphere and clear skies. The guide scope stayed on target the entire night. Optics and camera: Skywatcher Evostar 120 F/D=8.33 (Achromat) with a Baader UHCs filter (for removing light pollution). The camera was a IR-filter removed Canon 600D. Settings: 58 x 3 minute lights, 50 darks from library, 50 flats taken recently and 50 bias frames. ISO 800. Mount: Skywatcher AZ-EQ6 with extension pillar. Processing: The Lights and calibrations frames were processed using Deep Sky Stacker. I set the star detection thresholds to values that caught about 60 stars. The final images were stretched in RGB and I then balanced the histograms to retain white balance. Luminance was tweaked to show faint detail. I also used Gimp to add a selective Gaussian blur over a 5 pixel range to blend the RGB noise.

    © D Elijah

  3. From the album Planetary work

  4. From the album Planetary work

  5. From the album Planetary work

  6. From the album Planetary work

  7. From the album Planetary work

  8. From the album Planetary work

  9. From the album Planetary work

  10. Hi A4Andromeda, Good shot there but your 550D has the movie crop mode which is better for capturing Jupiter. Set it at 60 frames/s, ISO 100-800 exposure 1/60 and see what you get. HTH Dan
  11. Very good image - far better than my early attempts on Jupiter. I think you may benefit from increasing your image scale - using a barlow. The optimal scale depends on your pixel size (big pixels demand a longer focal length (more powerful barlow). Also if Jupiter is made larger on the sensor, Registax will have more detail to lock on to and should provide a better result. Sorry if this has already been mentioned, I haven't had time to read through all the previous threads! HTH Dan
  12. I know right! Interestingly the turbulent air seems to settle/rise out of shot quite quickly.
  13. Here's a gif clip from an imaging session I did a few days ago (02/04/2017)...with an unexpected interruption. Dan.
  14. Hi there, I also use a 550D in 640X480 movie crop mode and I get good results with it. As far as Registax goes, I learned the basics from astronomyshed's video, hopefully it also works with Registax 5...
  15. Hi all, I'm in the middle of processing a sequence of videos of Jupiter taken during the Europa transit on 02/04/2017. I recorded videos lasting about 2 mins. I chose 2 minutes primarily because I used it before and got good results. But I wanted to know the exact maximum time I should video before the planet rotates across more than 1 I wrote a small program to calculate this. You will need to know the angular diameter of the planet at its equator (you can get this from Stellarium), the pixel size of your camera and the effective focal length or your telescope (including any Barlows). It's written in Python so if you want to run it download and go to your terminal. Change the directory to the folder containing (use cd /folder/ Then type: python The program spits out the theoretical max time you can image before rotation spreads features across more than 1 pixel. In reality, poor seeing and imperfect optics will mean that planet rotation will probably not affect the image if you go slightly over this time. Anyway, please feel free to comment, use, modify and improve the program then post it for others to use. Dan