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  1. Last week
  2. Composite images

    This is what you get when you add all the Sky90 data to all the 200mm lens data giving composite images with around 24-hours of total exposure time in each case. Greg
  3. 10-hours and 40-minutes on IC410/IC405

    A few pillars in there. I might have to try that on my C14 one day. Ray
  4. 6-hours on IC410/IC405

    Wow, that's beautiful, well done. Ray
  5. The California nebula

    Love the spike touch Prof. Ray
  6. WIP - the Rosette

    Just making a start on the Rosette with the 200mm lenses. Greg
  7. Earlier
  8. 6-hours on IC410/IC405

    I got another 10 x 20-minute subs on IC410/IC405 last night with the 200mm lenses, ASI 2600MC Pro CMOS cameras and Optolong L-Enhance filters. I added these to the 8 subs taken previously and this is the result. I will try and get another 12 subs giving a total of 10-hours of data and then I'll call it a day on this one. Greg
  9. https://epod.usra.edu/blog/2023/01/3-d-view-of-dna.html Greg
  10. The California nebula

    A freezing cold, but clear, Moonless night last night. I set up the 200mm lenses with the ASI 2600 MC Pro CMOS cameras and Optolong L-Enhance filters on the Calironia nebula. Managed to get 24 x 20-minute subs (I wimped out at midnight, but could have gone on to 3 a.m. if I was made of stronger stuff). Managed to get a lot of the "nose" on this one which I know would have been quite impossible without the filters. I will get more data on this one when it passes the Meridian, but any more clear nights for now will be on building up the IC410/IC405 data. Greg
  11. Very, VERY old data

    Be interesting to try some blink software on your old and new data to see if there are any minor changes in the nebula or stars. Ray
  12. Very, VERY old data

    As I have access to the original FITS subs, I threw out 16 blobby images and was left with 36 x 10-second subs to stack. The result is a bit sharper Greg
  13. Very, VERY old data

    Ahh - looking at the FITS header I see that the close up of the Trapezium was at f#6.3 on the back of the C11 with 10-second exposures.
  14. Very, VERY old data

    Well this is quite extraordinary. I discovered a huge pile of DVDs last week and I just spent a few days downloading them all onto an HDD. The data was all very old (mostly around 2005) and is all taken with the original Hyperstar (no collimation or rotation adjusters) on a C11 with a tiny little H9C OSC CCD (1.4 Mpixels). Now as I had only JUST started off imaging, I knew absolutely nothing about sub-exposure times, or basically anything, so these two images were taken with 30 - 40-second subs, and there were 150 - 200 subs stacked for each image. As you can see - the Trapezium region of M42 is not completely blown out - unlike all my later "better" work!! So by pure luck I was actually doing better early on when I didn't know what I was doing compared to later on when I actually thought I'd learned a few things. This is not the first time that my initial best guess turned out to be almost optimum These images are from February 2005.
  15. And remember - you saw it on here first Greg
  16. Good old Wolfram Research came up trumps for me and they have published my Solid Golden Angle in their Notebook Archives - so at least there is now a name associated with the discovery https://notebookarchive.org/the-golden-solid-angle--2022-12-dtu824g/ Greg
  17. Composite IC410/405 nebulae

    Great work Prof. Ray
  18. Composite Rosette nebula

    Lovely deep colours Prof. Ray
  19. Composite IC410/405 nebulae

    Here is a Sky90/26C OSC CCD and 200mm lens/ASI 2600MC Pro CMOS camera composite of the IC410/405 region - with star reduction This is 30-hours and 37-minutes worth of data. Looks more noisy than it is as this is under half resolution. Greg
  20. Composite Rosette nebula

    Both are simply gorgeous! This one is still on my bucket list along with the California Nebula. I just can't do deep sky and work too. Very nice, Tim.
  21. Composite Rosette nebula

    And here's some original Hyperstar data added to the above (the original Hyperstar used a tiny H9C chip which is why the FOV is so small). Greg
  22. Composite Rosette nebula

    Here is a composite image of the Rosette nebula combining Sky90 and Hyperstar 4 data using RegiStar - a total of around 15-hours exposure time in this one Greg
  23. Mars 2022

    Exact opposite down here. about 100 degrees Fahrenheit. Again, great work. I'm going to have a look at this tonight. Ray
  24. Mars 2022

    My last still images of Mars. A New Years Mars, captured 01/01/23, about 8:45pm (-6 UT). We're steadily pulling away, as I noticed my capture settings have slightly increased. I was lucky to have had this one window of opportunity. Weather. Currently 70F and rain. One week ago, -5F with a 20F degree wind chill and snow. Anyhoo... RGB 742nm bandwidth. Cheers, Tim.
  25. Nice effort Professor. Fingers crossed for the Wolfram outfit. Ray
  26. Mars 2022

    Geesuz Tim, nice work. The geography is really clear to see (including the polar regions). Ray
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