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Found 13 results

  1. This cropped image taken on July 2nd 2015 is part of a series of experiments in testing and using a guided telescope in order to achieve longer exposures and lower ISOs. 17 x 1 minute exposures at 800 ISO 10 x 2 minute exposures at 400 ISO 1 x 8 minute exposure at 100 ISO 11 x dark frames 15 x flat frames 66 x bias/offset frames Processed in Nebulosity and Photoshop
  2. Seasons greetings, all! HiloDon and I are at it again with another seasonal delight for our friends here at SGL! HiloDon provided the stellar images and I created the musical landscape and produced the video. There's a little surprise near the end! Hope you enjoy! For all who observe, have a Merry Christmas and Happy New Year! Reggie
  3. Firstly Happy New Year everyone! Afraid I'm far from a frequent poster here on the forums, my last deep sky image through a scope was a DSLR image back in March 2012 ... around the time I stopped using film ... better late than never. Since then I have just made the move from DSLR to CCD during Spring 2015 and thought I would share my first finished effort, image files have been in my computer since September ...just a fun experiment to see what could be resolved along with image scale, the image scale is 100% but cropped very slightly due to stack overlap so about 95% of total sensor area. Colour wise this is my first LRGB aiming for rustic/teal which I feel is more natural ...rather than red/blue, also trying to retain subtle detail as best I can at this FL. and limited number of subs, thanks for looking, details below. APM 175mm Refractor (barlow to FL 3780mm)Atik 414EX (mono) at -20'C / Bin 1x1EFW-2 Astrodon E-Series LRGB filtersMultiple exposure between 15s & 300secsSequence Generator ProDeep Sky StackerPixinsightCS6 ExtendedM57 Ring Nebula NGC6720 by Mike Dickson, on Flickr
  4. The Ring Nebula 13/05/2018 01:39 (2300 light years) GSO 0.20 m Sky-Watcher NEQ-5 Pro SynScan mount QHY5L-IIC + IR cut filter / ASI 120MC + IR cut filter f: 1000 mm f/5 Total exp: 25 min Combination of images obtained with the QHY5L-II and the new ASI 120MC (received from FLO) ? Matteo Vacca Milis, Italy http://vaccamatteo.weebly.com/ https://www.astrobin.com/users/matteovacca/
  5. Evening everyone , Does anyone know the magnitude of the faint star just outside the Smoke Ring of M57 . Before the clouds rolled in tonight I was trying a new ES 8.8mm in the 200P and M57 looked really well at X 136 magnification , then the thought occurred to try it in the X 2 Barlow which gave a magnification of X 273 and , lo and behold , the Nebula was still clear but this time I could detect a faint star just outside it ( about 1 pm position ) Initially , the reason for trying this high magnification was to try and see the faint centre star but this was not possible tonight ... If I knew the magnitude of the peripheral star compared to the central star , then I`d know if it was possible to see the central star at all ( maybe in darker Winter skies )
  6. One of my favourite planetary nebulae, the Ring Nebula (M57). Imaged on April 16th 2015. 50 x 30 second exposures at 3200 ISO plus nine dark frames and eight flat frames. Processed in Deep Sky Stacker and Photoshop CS6.
  7. Toxophilus

    M57 - RingNebula

    From the album: Deep Sky Objects

    A prime focus RGB image of the ring nebula M57. I had hoped for a better result but I seemed to have focus issues all night. If I really stretched the luminescence sub-frames I started to pickup details of the nearby faint spiral galaxy IC1296. For more detail the astrobin link is: http://www.astrobin.com/267930
  8. Ring Nebula in Lyra (M57)...a planetary nebula 2,300 light-years from Earth. This is an experiment to see how feasible it is to capture deep sky objects using the ZWO ASI120MC camera instead of the Canon DSLR. The advantages in doing so are getting larger object because of the smaller sensor and not wearing out the shutter of the DSLR....the disadvantages are a much lower resolution and a more grainy image with little extra detail (again because of the smaller sensor). Just like with the experiment in using a Barlow lens with a DSLR to image this object, the conclusion is that it's probably better to crop a larger, hi-res image but I wanted to know if this was possible and what the quality would be like if it was possible. Apart from the difficulty in finding the object with such a small sensor, the process was fairly easy with fewer of the problems that cropped up with Barlow experiment. And the result, though a bit grainy, does show some previously unseen details like the nebula's distinctive shape and the white dwarf in the centre of the nebula. 3 x 45 second exposures 33 x 20 second exposures 37 x 10 second exposures 17 dark frames No flat or bias frames Processed in Nebulosity and Photoshop.
  9. I was imaging last night after midnight and the seeing settled down and I was able to take one of the highest resolution images I have ever taken. I am using a 10" APM Mak-Cass with an APM 0.6 focal reducer and a QSI 683-8 WSG. This is on a PMX. The LRBG was 300x10 L, 300x2 R, 300x2 G and 300x2 B. I needed to take more colour but dawn intervened. I measured the FWHM on the combined mono as 1.6 arcsecs which is the best I have seen. One of the images had stars at 1.4 arcsecs. The image has been LR processed and needs more colour but I doubt I will see that good resolution again. But you never know.
  10. This is a reprocessing of data taken on 1st August 2015 in order to try out, learn to use, and see if Maxim DL is any better than Nebulosity. It's hard to say for sure which is the best at this stage as both have their pros and cons but I quite like the result of this test on a nice easy target. 17 x 4 minute subs at 800 ISO 9 x dark frames 11 x flat frames 24 x bias/offset frames Post processed in Photoshop
  11. From the album: Stargazer33's Album

    9 shot manual stack in PS7 of the Ring Nebula - M57 - in Lyre. Subs were limited to 30" due to dec drifting badly even with guiding so ISO had to be turned up to max - 6400 Imaging: C8 XLT, CG-5 GT, Revelation Superfocus 2" R&P focuser, Canon 1100D (unmodified), 1.25" UHC filter. Guiding: Travelscope 70, Orion StarShoot AutoGuider, PHD. (something not working properly here as dec drifting very badly!)

    © 2013 Bryan Harrison

  12. From the album: Deep Sky Objects

    The Ring Nebula (Messier 57) is a planetary nebula in the constellation Lyra approximately 2300 Ly from earh. Planetary nebula are formed when ionized gas is expelled by a red giant star, which was passing through the last stage in its evolution before becoming a white dwarf. Taken in narrowband using the California, France, Hawaii Telescope palette (Hα = Red, OIII = Green, SII= Blue) Unfortunately my OIII data was slightly out of focus the the results is not a good as it could be. If you want to know more the asttobin link is: http://www.astrobin.com/255438/
  13. From the album: Starchasing

    First attempt at imaging M57 using an entry-level deep space camera (Orion StarShoot Deep Space Video Camera II). Noisy image but I got the ring with color!
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