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Bloom last won the day on August 23 2020

Bloom had the most liked content!

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About Bloom

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    My interests, other than astronomy: Reading all sorts of books, playing chess, geology, running
  • Location
    Central Greece

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  1. As promised yesterday, I stayed till late and imaged Mars. Seeing conditions were good, but were a bit worse than yesterday. Well, the planet is never easy - it is just 17 arcsec wide. Only good, at 02:45 the planet was high... Taken with a 6 inch f/5 GSO Newtonian and a barlow lens x2,5. Programs used: Sharpcap, Autostakkert, IRIS, Astroart. I took 5 minute frames at 160 fps, and stacked the best 50%. Then, I split the stack into R, G, and B components, and I recreated a new stack, using the red channel as luminance.
  2. I hadn't noticed the green colour! I used all the automatic Colour Balance functions of IRIS and Astroart, and I did not pay attention. I' ll fix it in ImagesPlus; thanks.
  3. After more than 14 years in the hobby, and after a two year hiatus, this is the first time I manage to get decent images of the gas giants. I think it was back in 2008 when I was trying to force an unmodified Toucam Pro in creating anything close to satisfactory - I don't know what others have achieved with such meagre equipment, but my verdict has been that these webcams, along with all the hype about them, were just inadequate, and I lost many nights trying for the impossible. Anyway, technology has advanced, and it has done it in an impressive way. I cannot stress how absolutely fantastic t
  4. Two days ago, I used an improper power supply on my 12 years old CG-5. So, whenever I turn on the mount, enter time, date, and then press for alignment, the mount immediately starts slewing in RA in its greatest of speeds. Theory says most probably the mount control board got damaged; and you cannot buy a spare one from Celestron, since they have been discontinued. Yesterday, I decided to at least check what would happen with the correct power supply, and by pure chance I discovered a quick fix. Here it goes: When you turn on your mount, before anything else, before aligning, or ente
  5. Well, maybe guys your monitors are calibrated differently. There is a vertical line, which seperates the image in two areas: on the left side the image has a bluish tint, while on the right side it is greenish. If you look closely, there are a few more bands, less pronounced. The sepatration, when it happens, it is always in the same position (the NGC6946 image is cropped). I am posting the M81 image again, a bit overexposed, so that you can see.
  6. For a couple of years, my Atik 450C gets this defect (I won't describe it; it is obvious enough in the attached images). When I manage to gather enough signal, the problem is not that obvious. Does anybody know what is going on? Note: both galaxy images have been processed in an effort to eliminate the problem (which means that in the initial stack it was even more profound). The third (M16) and fourth (M35) images are somewhat recent, and they seem to be OK. Whatever goes wrong, it does not happen all the time.
  7. Don't know if anybody has already mentioned it: Being an owner of both a dSLR and an OSC CCD camera, I know from experience that in general dSLR cameras cannot compete with cooled dedicated astro cameras. Still, dSLR cameras do keep a couple of advantages. First, they have big chips in a very attractive price - CCD cameras cannot compete in this. Second, there is a multitude of brilliant photographic lenses suitable for wide field imaging, and dSLR cameras are the best solution for these lenses. Third, and I think nobody has mentioned it, is that (unmodified) dSLR cameras are much better
  8. The NEQ6 is portable! When unassembled, it has the same amount of parts as the CG5, which is the definition of a portable, yet efficient GOTO mount. The only difference is that the NEQ6 has a significantly heavier head (if I remember correctly, it weighs 18 kilograms - 40 lbs, which is the weight of the entire CG5, along with its counterweights). But if one does not have any back pain issues, 40 lbs is not something difficult. So, when I go stargazing out in the mountains, I take the NEQ6. It is a far better mount than the CG5.
  9. This is my last week's effort; two hours (39 frames, 4 minutes each), with an Atik450 OSC on a 6 inch, f/5 newtonian. It is an ongoing project, and I plan on reaching 6 hours.
  10. This one is from last August. Taken through three successive nights . Well, remote galaxies are never easy, especially with modest equipment; but I guess it turned out nice. I almost reached ten hours 148x4min, GSO 6'' f/5 newtonian, NEQ6, Atik450L OSC camera, Baader MPCC coma corrector, Baader UV/IR filter. Guiding: Starlight Xpress Lodestar with Stellarvue FV50 9x50 finderscope, and PHD. Image scale is 0.95 arcsec/pixel. Image processing was done with IRIS, Astroart 5, Imagesplus, and Paint Shop Pro X5
  11. This is 4 hours of data, from September 7, with an unmodded Canon 40d. 62x4min,Skywatcher Equinox 80/Televue field flattener TRF 2008 (F=400mm, f/5), NEQ6, Canon EOS 40d (unmodded). Guiding: Starlight Xpress Lodestar with Stellarvue FV50 9x50 finderscope, and PHD. Image scale is 2.94 arcsec/pixel. Image processing was done with Imagesplus, IRIS, and Paint Shop Pro X2.
  12. Great image. Congratulations.
  13. For the last two months I' ve been quite busy; so I only started processing any frames I captured in September last week... What is new in my astroimaging efforts is that I have increased the imaging times, aiming at 4 hours minimum. So here is NGC 7331 from September 8. 101x4min, GSO 6'' f/5 newtonian, NEQ6, Atik450L OSC camera, Baader MPCC coma corrector, Baader UV/IR filter. Guiding: Starlight Xpress Lodestar with Stellarvue FV50 9x50 finderscope, and PHD. Image scale is 0.95 arcsec/pixel. Image processing was done with IRIS, Artemis RGB, Astroart 5, Imagesplus, and Paint Shop Pro X2).
  14. Well, it is much better than anything I ever accomplished on Jupiter...
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