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Found 9 results

  1. This has been my project since the start of this season and now I think I´ll just leave it... for now I started last season (with a longer FL) but didn´t like how my Baader O3 filter matched the Astrodon Ha filter, so now I had to get a 3nm O3 as well. This is a total of: 60*5 minutes of 3nm Ha 114*5 minutes of 3nm O3. Shot with a ZWO ASI1600MM-Cool and a Canon 300/4L IS tele lens. The lens suffers from bad star shapes in the corners but I managed to get it decent anyway. Didn´t want to stop it down from f/4 either. Combined as a semi-RGB (or what to call it) from R=Ha, G=70%O3+30%Ha, B=O3. Processed it as LRGB using a combined Lum from 60% Ha L and 40% O3 L. I am really happy that I finally feel satisfied with a target! Usually I just get restless and move on when half of the data is collected. Hope you like it!
  2. Hi, I took this photo during Sep, Oct and Nov of 2015 with over 14 Hours of exposure. This is the longer exposure I ever made on one object, personal record For better resolution: https://www.flickr.com/photos/101543943@N04/22815861829/in/dateposted/ Hope you like it. Thanks much, Haim
  3. Hello, Following my Ha Only version of the The Elephant's Trunk nebula I'm uploading this HaLRGB version of the IC1396. http://stargazerslounge.com/topic/257462-the-elephants-trunk-nebula/ For high res: https://www.flickr.com/photos/101543943@N04/22749472473/in/dateposted/ Hope you like it Haim
  4. Takahashi FS-128 with 0.75X reducer/flattener on Vixen AXD2 mount 45 X 120s with Nikon D750 (90 mins) Processing in PixInsight and Photoshop I think the funny red ring artifact / glare / processing error actually enhances this nebula. Barry
  5. Skywatcher Esprit Pro 150 teamed up with Atik 460ex and Baader narrowband filters. I don't have a massive amount of data for this, especially in S2 and Oiii, but wanted to move on to another target as I have just acquired a colour 460ex. The Esprit delivers really crisp images, really sharp edges to the bright parts of these emission nebulae, and this is something I have been looking for for some time. As a die hard reflector fan I have to grudgingly admit that I actually prefer imaging with this refractor at this focal length. I'm really looking forward to using the 150 with the 460ex OSC, I think they will be nicely suited. I'll upload the full size to astrobin later, but here's a 30pc preview for now, just a little murderated by the forum compression Thanks for looking Tim
  6. From the album: The Next Step

    Over a couple of nights managed to get 4 hours worth of Ha data (12 x 1200s); about an hours extra data was lost due to Satellite trails.

    © AJG 2014

  7. Since my experience of processing NB data is rather limited, I couldn't resist having a further play with my recently acquired data set. I tried various pallet combinations with the aim of eliminating the occurrence of magenta stars. I'm not entirely happy with the result, so if anyone has any suggestions for palette combinations which minimize magenta stars please let me know ! Alan
  8. Still working my way through my summer crop of data. Here's my take on that old favourite, Elephant's Trunk: Please click through for better resolution. 25x 300s lights at ISO1600, darks, flats and bias, equipment as per sig, DSLR at prime focus, processed in Pixinsight. I was experimenting with spacing of my coma corrector for this image, so it has some coma showing, this is a full frame image. I think I have better spacing now, but still not 100% happy with it, need to experiment more. I'm liking how the diffraction spikes on the newt can split multiple stars - if you zoom in on that bright central star, you can clearly see it's a triple. The Elephant's Trunk nebula (left of centre) is a concentration of interstellar gas and dust within the much larger ionized gas region IC 1396 (whole image) located in the constellation Cepheus about 2,400 light years away from Earth. It is commonly called the Elephant's Trunk nebula because of its appearance at visible light wavelengths, where there is a dark patch with a bright, sinuous rim. The bright rim is the surface of the dense cloud that is being illuminated and ionized by a very bright, massive star. The entire IC 1396 region is ionized by the massive star, except for dense globules that can protect themselves from the star's harsh ultraviolet rays. The Elephant's Trunk nebula is now thought to be a site of star formation, containing several very young (less than 100,000 year old) stars. Two slightly older stars are present in a small, circular cavity in the head of the globule. Winds from these young stars may have emptied the cavity. The combined action of the light from the massive star ionizing and compressing the rim of the cloud, and the wind from the young stars shifting gas from the center outward lead to very high compression in the Elephant's Trunk nebula. This pressure has triggered the current generation of protostars. Hope you enjoy !
  9. alan4908

    IC1396

    From the album: Deep Sky

    I found this particular image very difficult to post process, mainly because my "standardised" LLRGB workflow did not seem to give very good results. However, I found by eliminating various steps (eg Screen Mask Invert) a more pleasing result was possible. Post processing was also compounded by the fact that I discovered that my telescope had been pointing at slightly different parts of IC1396 and my normal stacking software (MAXIM DL) refused to stack all the subs. After a bit of experimentation, I discovered that CCDstack2+ was able to stack everything correctly. On reflection, I think I've overdone the sharpening on the image, so it will need to be reprocessed at some point.
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