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Found 9 results

  1. Anweniel


    From the album: DSO Nebulae

  2. 120 x 60sec Lum (1x1 bin), 60 x 60 Sec R, G & B (2x2 bin), 30 x 180 sec Ha (1x1 bin), 50 x Flats for each filter together with master darks and super bias. 6.5 hours total integration time. Gear: SWED80 DS Pro, 0.85 Reducer, SW AZEQ6 GT Pro, Moonlite CS Focuser / Stepper with HitecAstro Contro, ZWO OAG paired with ZWO185mc, ZWO EFWmini with Lum and ASI1600 tuned ZWO RGB filters together with Baader 7nm HA, ASI1600mm-c. Pre-Processing: Pixinsight Post-processing: Pixinsight, Photoshop (Carboni's tools and Topaz Labs) Any comments or criticism always welcome. Special thanks to the Skipper!
  3. Shibby

    Iris Nebula (version #2)

    From the album: Deep Sky

  4. Hi Guys/Girls I had a chance to get out in the garden last evening, had a go at capturing NGC 7023 - Iris Nebula, only managed to get 12 good shots, 240sec x 12, combined in Photoshop with Mean Stacking. The dew was super heavy and currently I do not have any dew heaters (next purchase) so lost the battle after around 2 hours. One interesting point is I captured these shots with the long exposure noise reduction switched on with the Sony A7Rii, so each shot took 8 mins to take and save, but as a result the noise levels were next to zero at 800 ISO, and at the end of the day the noise is always our enemy. I need to try a real pro level 'cooled' astro camera just to see how much better it could be, as the Sony A7Rii is just stellar ! I am very happy with the final shot, taken with my Skywatcher 100 ED Pro Esprit Scope on my NEQ6 mount, Skywatcher ED50 Guide Scope and Altair Astro ASI130mm camera, PHD2 of course. The sky was nice and clear with low light pollution, as around 5 miles from major town. I do not take darks or flats or use Deep Sky Stacker, and I do not use filters, plus the camera has not been modified, so I am always delighted with the results I get from my set-up, as I have a deep level of respect for the hard work that most Astrophotographers go through to get the incredible images that we see here in Stargazers. I have read that some people believe that the Sony Alpha cameras have a tendency to 'eat the stars' and not show everything captured, to be honest, I always used a Canon 60Da for many years for my astrophotography, until one day I though, what if my Sony A7Rii could be used, the first time I did this I released that it was time to sell the Canon 60Da, the 'Remote' (free) Sony software is almost as good as BackYardEOS, but the cameras are a decade apart in performance, the noise levels on the Sony are at least 4 maybe even 5 stops better than the Canon, that is the Sony A7Rii at 3200 iso equal to the Canon 60Da at 200 iso, so at 800 iso it is just so impressive. As you can see from the picture only 12 frames, stacked in Photoshop (Mean). Open to comments and welcome a discussion/debate, thanks Jamie
  5. Please can I have some expert advice on the following image: Canon 1100D (modded) , ED80 with 0.85 focal reducer, Astronomik CLS filter. 24 x 8 min lights, 20 darks and 20 flats. Processed in Deep Sky Stacker and Photoshop. Gradual application of levels and curves, attempts to increase hue, saturation and some use of "Actions" to bring out DSO itself. I really am struggling with colour balance since getting my camera modified. :-( Can't wait to go and stay with Olly and have some lessons in processing! 1. Why can I not bring out any colour in the nebulosity? 2. Why is there a red/brown hue across everything? 3. What should I do differently next time in either capturing or processing?
  6. Hello, One Saturday ago I shot some frames on Iris nebula. There should be 21x300s frames at ISO1600 taken with an unmodded Canon 550D, Tair 300s at F5.6 on an AZ-EQ5 guided with dithering. Enough darks and bias, no flats yet. I could take the flats later for vigneting removal, but I could spare some margins. The result of what I processed until now is here, I could probably lower a little the noise, but I'm not good at processing. Yet I wonder if anyone would mind to show me what they can pull out of my data. The stack is made with DSS, unbalanced and converted with GIMP to 16 bit integer tiff from the original autosave file. jpg: https://drive.google.com/open?id=0ByhJ_xuQxcnjMlhTT0sxMk5VY3M tiff processed: https://drive.google.com/open?id=0ByhJ_xuQxcnjM1RJTENwU2l2QVE tiff unprocessed: https://drive.google.com/open?id=0ByhJ_xuQxcnjcjZ0bzNON1ZDcFE Thank you, Alex
  7. Whilst California was being collected - https://stargazerslounge.com/topic/280659-355-hrs-in-california/ - we pointed Olly's TEC 140 in the vague direction of the Iris Nebula. Over the course of 3 nights, we got hold of 4.5 hours each of RGB for a total of 13.5 hours, plus 5 hours and 15 minutes of Lum. We extracted a synthetic luminance from the RGB and added this to the 'real' Lum (estimating that it gave us an equivalent of about 3 hours Lum). I was at the keyboard but Olly was hovering over my right shoulder prodding me in the right direction. We managed to get the praying ghosts in frame, which was a bonus.
  8. The Iris Nebula captured from London on July 3rd 2015. This image is another test of guiding telescope capabilities, this time with a more challenging target and longer exposures. Over 8 minutes a small amount of movement was detectable but I'm hoping it may be possible to reduce that further.10 x 8 minute exposures at 400 ISO 3 x dark frames 5 x flat frames21 x bias/offset frames (applied to flat frames only)Processed in Nebulosity and Photoshop
  9. Last night was a bit of a miracle, there was more clear sky than predicted! I set everything up at dusk expecting to be able to do nothing more than practice polar alignment, but I actually managed to get some imaging in as well! Admittedly I had to spend the first half of the night fighting SGPro in order to convince it to actually let the guider settle before opening the shutter again. The first hour of subs needed to be thrown away as they all had lines where PHD was trying to bring the guidestar into the right place after dithering, but SGPro has waltzed on ahead. It turns out that the integration of Sequence and Equipment Profile in SGPro is unclear and byzantine. I managed to capture some of the dark dust surrounding the brighter nebula which I am pleased about. There is still a bit of a gradient from top to bottom, but I could not decide if it was more dust, so I decided to leave it in. The centre of the nebula is completely blown out unfortunately, I tried to take some shorter exposures, but even at 60 seconds, the core was blown out and I was getting no nebulosity at all. Lights: 21 x 300s @ ISO400 Darks: 112 x 300s Bias: 492 Flats: 54 x 1/8s C4 - Iris Nebula by frugal10191, on Flickr Mount: Skywatcher AZ-EQ6 GT Imaging Telescope: Skywatcher ED80 DS-Pro with 0.85x FF/FR Imaging Camera: Canon 60D (Unmodified) Guiding Telescope: Skywatcher ST-80 Guiding Camera: Starlight Xpress Lodestar X2 Software: Sequence Generator Pro, PHD2, PixInsight I also tried to image the Elephants Trunk as some people have had success with unmodified DSLRs, but the 10x300s subs I managed before the clouds rolled in show no signs of nebulosity when stacked ;(
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