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About nandopg

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  • Birthday 10/09/1956

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    Physics, Field Astronomy, Astrometry and Astrophotography
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    Santa Rita da Sapucai, MG - Brazil
  1. NGC 5128 - Centaurus A in Close-up

    Thank you !! Regards, Fernando Thanks Dave !! Appreciate your comment. Fernando
  2. NGC5128 is a lenticular galaxy distant from Earth 14 million light years. Its apparent diameter is 25 x 20 arcminutes and its magnitude is 6.0 Image: Luminance: 24 x 10m 1x1 Blue: 24 x 5 m - 2x2 Red and Green: 20 x 5 m 2x2 Scope: RC-8" f/8 on NEQ-6 CCD: ST-8300M Guided: OAG Lumicon, Lodestar and PHD. Bias, Flats and Darks applied.
  3. Thank you so much Chris. Regards, Fernando
  4. Thanks!! Give it a try. Don't forget to let me know about the outcome of your job. Have a good one!! Fernando Thank you Alan. As for the HDR program it is the Photomatix Tone Mapping PRO. It is a wonderful program for HDR and tone mapping. I use this same program for tone mapping in my solar images. Best Regards, Fernando
  5. M-64: The Black Eye Galaxy

    Thanks Barry !! I would like to be in the northern hemisphere to be better off in terms of object's elevation and catch some more details in the spirals. Here the maximum elevation of M-64 is 45 Deg Best Regards, Fernando
  6. Thanks again!! As for the order of the masters, you are right: ha, o3 and s2, from top to bottom, Best Regards, Fernando
  7. Thanks for the appreciation. You are a great person. Sure, I just could not uploaded them in the same scale as the original, due to their size Thank you very much for the kind comment.
  8. M-64: The Black Eye Galaxy

    Hi Wim, Thanks a lot for the kind words. It iis very nice to have an observatory in home. All I have to do is climbing a small stair to reach my true world. Then, is just travel here and there. Regards, Fernando Thank you !! Fernando Thank you. If I am able inspiring someone with something that I love to do, I feel really happy and honored. Thanks to provide this nice felling with me. Give a try on M-64, sure enough you will get a countless of new details. It is a shame, however, that M-64 will be visible for you only in the New Year. Best Regards, Fernando Thanks Oly, I loved your comment. Best Regards, Fernando
  9. Dear Sean, Thank you so much for the kind comment and remarks. My workflow at the observatory, calls always to do the capture in one filter, then another one , and so on. I found this process always better as it accounts for any slight difference focus wise. In my oppinion, this is particularlly the best way to go for captures of objects that pass too low, as in the case of M-27, that transists in 44 degrees of elevation. For you have an idea I had to capture more than three times the number of subs used, in order to have a clean image. What I mean is that anything targeting the reduction of image distortions should be implemented. Even with all of this care, It took almost 2 weeks to have a reasonable quality and quantity of subs to assembly the image. This extended period of time also happened because of the available window for imaging. Dear Friend, I am very happy you have liked. Thanks for the kind comment, Fernando Hi Oly, I agree, some good care should be taken in processing time. Thanks for your appreciation. Fernando I agree , that is a trend. I always like to come back to my images searching for some type of new information.. To me this is very pleasurable. Thnaks for the nice comment!! Fernando Thank you, your comment has been highly appreciated. Fernando That is a nice piece of information. I will regard it in a next capture with objects with outer halo Thank you, Fernando
  10. Hi my friend, thanks again for your kind comment. I have included the About Me information as you requested Best Regards, Fernando
  11. Thank you so much for your the comment. This is the kind of comment that works as the propel to do things in the right way. Thanks again, Fernando
  12. This is an image that I always had curiosity to do, M-42 in narrow band. I know about the existence of some dark nebula embedded to M-43. In this image I think I was able to capture this dark right in the "junction" of M-42 and M-43. The presence of this dark nebula makes M-42 an even more amazing object for research. The image took 17 days to be completed because of the weather conditions. The capture scheme was: Ha: 12x900sec bin 1x1 O3: 15x900sec bin 1x1 S2: 20x900sec bin 1x1 Bias, darks and flats applied. Pre-processing and processing in Pixinsight. HDR assemby in EasyHDR standalone version.
  13. The Dumbbell Nebula, designated Messier 27 or NGC 6853, is a planetary nebula with a radius of about 1.44 light-year, located some 1,360 light-years away in the northern constellation of Vulpecula (the Fox). Measurements have indicated that it is approaching us at approximately 42 kilometers per second and expanding at about 31 kilometers per second. When a star with a mass up to eight times that of the Sun runs out of fuel at the end of its life, it blows off its outer shells and begins to lose mass. This allows the hot, inner core of the star to radiate strongly, causing this outward-moving cocoon of gas to glow brightly. Over the next several thousand years, the Dumbbell nebula will gradually disperse into space, and then the white dwarf star that generated the nebula, will cool and fade away for billions of years. Our own Sun is expected to undergo a similar fate, but fortunately this will not occur until some 5 billion years from now. The Dumbbell nebula is shaped like a somewhat elongated spheroid. But, we see this nebula roughly along its equatorial plane; if it were to be viewed from near one pole, it would probably have the shape of a ring, and perhaps appear similar to the Ring Nebula (M57). The Dumbbell consists of material that has been ejected from the hot central star, a white dwarf. This white dwarf is estimated to have a radius of about 0.055 that of our Sun which gives it a size larger than any other known white dwarf. Its mass is estimated to be some 0.56 solar masses. The gas atoms in the nebula are heated by the intense ultraviolet radiation from this white dwarf and emit strongly at specific wavelengths. Its bluish coloration is released by oxygen atoms while the red hues are emitted by hydrogen. The Dumbbell shows many knots, but their shapes vary. Some look like fingers pointing at the central star; others are isolated clouds, with or without tails. Their sizes typically range from 17 – 56 billion kilometers (11 – 35 billion miles), which is several times larger than the distance from the Sun to Pluto. Each contains as much mass as three Earths. Some handbook data: Constellation: Vulpecula RA: 19h 59m Dec: +22Deg 43sec Distance: 1 Thousand Light Yeards Apparent size: 5.8 arc-min Magnitude: 7.3 Image Details: Ha: 25x600sec O3: 25x600sec Bi-color processing Telescope: Skywatcher Quattro CF 10 f/4 CCD: Tria SX-694 CCD Guiding: Lodestar Capture and guiding software: MaxIm DL Mount: AZ-EQ-6 Pro Processing: PixInsight Bias, Darks and Flats applied
  14. The nickname of this galaxy is due to the dark arc- shaped of of dust located on its NE side . The optical diameter of this galaxy is 50,000 light years, what makes its capture very challenge, even more in the southern hesphere. An interesting respect of this galaxy is that its nucleus a diferent chemical composition from the rest of the galaxy. In addition, the gas of the outer disk, (about 1' around the galaxy) has 100 million solar masses, rotates in an oppositee diretion from the rest of the galaxy, including the stars which rotate all the same way. Handbook Data: Constellation: Coma Berenices Type: Spiral Galaxy Distance: 15 million Light Yeards Apparent Magnitude: 8.5 Image: Luminance: 52 x 300 sec. R: 15 x 600sec G: 10x600sec B: 12x600sec Maximum Elevation at my latitude: 44 Deg Set up: Scope: 10" f/4 => Skywatcher Quattro 10CF Camera: SX694 Auto Guiding: OAG with a Loadstar Mount: AzEq - 6
  15. Hi friends, I would like to thank you guys for the kind comments issued. Best Regards, Fernando