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Found 24 results

  1. Taken with the 450D & baby Tak on the Star Adventurer. This is about 5.5 hours of 1.25 minute exposures over two nights, which is the longest I’ve ever managed to image. I just left the camera clicking until the battery ran out. Processed in Pixinsight with flats & bias but no darks. I usually find it very difficult to align the camera with the previous night’s, but this time I left the scope in the same position overnight & placed Merak in the bottom right hand corner which actually worked.
  2. I had a go at the Owl last night. What a difficult blighter! This is the result of 26 subs of 300 secs at 1600iso using the C9.25 at it's native focal length and the modded 1200d with an Astronomik UHC-E filter. Not very good really. Any comments/suggestions welcomed as usual. Peter
  3. This is a second attempt to image the Owl Nebula - the first attempt, over a year ago, was rubbish - and though I wouldn't say I've nailed it, it does look much better and now it at least bears a passing resemblance to other pictures I've seen of it. 8 x 8 minute exposures at 400 ISO 11 x dark frames 10 x flat frames 21 x bias/offset frames (subtracted from flat frames only) Captured with APT Guided with PHD Processed in Nebulosity and Photoshop Equipment: Celestron NexStar 127 SLT GoTo AltAz mount with homemade wedge Orion 50mm Mini Guide Scope ZWO ASI120 MC imaging and guiding camera Canon 700D DSLR
  4. We seem to have the worst of the clear nights in the last few weeks - while imagers to the North and East of my location have had some pretty clear conditions the M4 corridor has had generally murky conditions with the odd clear break. This image of M97 has been taken over the last month with high cloud, poor seeing and the moon trying hard to ruin any nominally clear spells. Anyway enough moaning image details: Equipment: TS (GSO) 12" truss RC (2400mm Focal Length) with modified back plate, Mesu200, Atik383L+, Atik EFW2, Lodestarx2 on Atik OAG Exposure: L=9 x 600s unbinned; R=G=B= 9 x 600s binned 2x2 each filter. Captured with MaxImDl and processed in Pixinsight. The image is rather noisy due to the presence of the moon on several of the nights when I collected the data and further due to the relatively short total exposure time but it doesn't look as though I'll be able to add more any time soon based on the weather forecast. Despite that there are still dozens of tiny, faint fuzzies visible in the background. There was one night where, during a clear spell that lasted for about 90 minutes, the seeing was fantastic (although transparency was not great) and I managed to capture 5 or 6 images where the measured stellar FWHM was sub 2 arc seconds and in2 image2 was below 1.8 arc seconds - this is the reason I bought the long focal length scope - it's just a pity we haven't had many such nights in recent months. Still, it does bode well for the RC and Mesu200 setup if the conditions ever improve again ... Derrick
  5. 2 pictures of M97 and the cyngus wall in h-alpha, 7nm, 10" scope. 8x 8 min for both. The owl was taken on 26-4-15, and the wall was taken on 12-5-15........
  6. From the album: DSO, Nebula, Galaxies, Comets etc

    M97 The Owl Nebula in Ursa Major imaged 04.05.2018 William Optics FLT-110 refractor and Atik 314L monochrome CCD with Baader narrowband filters 10 x 300 seconds H-Alpha, 10 x 300 seconds H-Beta and 10 x 300 seconds OIII Assigned to R, G & B channels respectively to give a false colour image.

    © vicky050373

  7. From the album: Sketches

    Date: 12.03.13 Time: 20:15 Location: Boraston Uk Scope: SW 130M EP: 25mm BST Magnification: x36 FOV: 60 Conditions: Clear then patches of cloud Seeing: Good A better contrast image.

    © Rupert McCallum

  8. I lost astro dark a couple of weeks back. I thought, therefore, that I would try capturing narrowband during nautical darkness on the basis that I may as well do something with all the gear. I ended up with 6 hours of Ha and 6 Hours of OIII captured at my home observatory using my Esprit 120 and QSI 690 atop a Mesu 200 mount. Filters are Astrodon and exposures were 30 minutes each. Processing in PixInsight and Adobe Photoshop. I cropped the image slightly to eliminate a couple of brighter stars at the edge of the frame. I'd be interested to hear what people think.
  9. My first attempt at capturing the Owl Nebula. It really is a very faint object seen from London. The nebula only barely showed up in the subs. Imaging was curtailed when the scope reached its slew limit and the subs started to streak (alt-az mounts really don't like being pointed directly up do they?). 26 x 25 second exposures at 6400 ISO and seven dark frames.
  10. Hi, This is my attempt at the Owl nebula and also the first picture taken with cooled CCD camera for me. My Canon EOS500D has now retired. The image is photographed from Uppsala in Sweden, date 2013-03-13. Exposures L23x10min, R9x10min, G9x10min, B7x10min. Camera SBIG STF-8300M, cooled to -30 ° C. Telescope, Skywatcher 190MN on NEQ6-mount. Guide camera-QHY5M. Stacked in Maxim DL and then processed in Adobe Ps Cs5. Weather conditions good, around -15°C. Enjoy! Full 100% wiew: http://www.astronet....2550&mode=large Close up wiew, cropped: http://www.astronet....2549&mode=large
  11. From the album: DSO, Nebula, Galaxies, Comets etc

    M97 The Owl Nebula in Ursa Major 24.03.2017 Celestron 8SE and Atik 314L monochrome CCD camera 20 x 300 seconds stacked in DSS and processed in PhotoShop CS2

    © vicky050373

  12. From the album: DSO, Nebula, Galaxies, Comets etc

    Image taken using Canon 100D and William Optics FLT-110 3 x 30 second exposures stacked in DSS and processed in PhotoShop Elements 11

    © Vicky050373

  13. Jannis


    From the album: Astro Gallery

  14. Disappointing weather so far this week, but a short run on the Owl has been a good test of getting the most out of not enough data! I was very pleased and surprised to find some outer shell in just 6x15 minutes of OIII. This also had 4x10 mins per colour and 9x15 mins Ha, so not quite 6 hours all in. In adding the NB I've tried hard to retain the original colour. Had I had a sound recorder I could have presented this in multi-media mode because, throughout the night, a Scops Owl was sending his monotonous electronic beep up from the valley. I think what this now needs is some binned OIII to nail that outer shell and some Lum for the faint fuzzies. TEC140 triplet Apo, Atik 460 mono, filters all Baader except for an Astronomik OIII, Mesu 200. Processed in AstroArt, Pixinsight, Registar and mostly Photoshop CS3. This is a crop. Olly
  15. alan4908


    Well, my first experience of processing something green - the planetary nebula, M97 aka the Owl Nebula. Having previously decided on an LRGB approach with some form of Ha blend, I thought I'd take a reasonable amount of Ha in an attempt to boost detail. On processing the image I discovered that blending the Ha into the Red channel destroyed the green colour of the object, so I opted for a highly black clipped Ha blend into the Lum channel. Another major processing issue was that all the subs had strong scattered light rays from a bright star that was out of the field of view, these where so strong that they went all the way across the image ! Anyway, after a bit of processing I ended up with the image below which shows a bit of detail including the central blue star. The image represents 22 hours integration time. To me it looks like a green planet with red polar ice caps. Alan LIGHTS:L:15, R:9. G:11, B:13 x 600s, Ha: 28x1800s, DARKS:30, BIAS:100, FLATS:40 all at -20C.
  16. RMcCallum

    M97 and M108

    Hello, This is my first ever attempt at cosmic sketching, any tips or tricks would be much appreciated. I have no scanner, so had to photograph and then invert as a result my skies are grey
  17. Sp@ce_d

    M97 M108 By Sp@ce_d

    From the album: The one's I nearly threw away

    This was taken on 18/19th February 2012 57 x 3 Min Lights Darks & Flats Camera: Canon 1000D - Self Modded Filters: SW LP Scope: SW 80ED DS + .85 flat/reducer Mount: NEQ6 Guiding: 9x50 Finder guider + CoStar + PHD Processing: Nebulosity, CS3 These targets really need a longer focal length I guess. Still need to reduce noise... Hmm, good excuse to get a CCD tho..
  18. alan4908


    From the album: Deep Sky III

    An HaLRGB image of M97 aka the Owl Nebula. This is an example of one of the few green coloured objects in astronomy. I found that attempting to blend Ha into the red channel destroyed the green colour, so I opted for a very strong black clipped Ha into the Lum channel which increased detail. LIGHTS:L:15, R:9. G:11, B:13 x 600s, Ha: 28x1800s, DARKS:30, BIAS:100, FLATS:40 all at -20C.
  19. From the album: Photos from Bury

    M97 and M108 (Owl nebula). I stretched the original Tif using DSS. Hardware details: Camera: Nikon D200 Telescope: SW Evostar 120 with Baader UHC-S filter. Mount: AZ-EQ6 guided using a ST80 synguider. Image details: Lights: 91 x 3min at ISO 800 Darks: 40 x 3min at ISO 800 Lights and darks separated by 1 min intervals Flats: 40 x 1/40s at ISO 800 Bias: 30 x 1/8000 at ISO 100 Date of capture 22/01/2016 Conditions: Very clear sky with some light cloud. Seeing was good. The guiding was a bit erratic - possible bad calibration or wind. quite a few subs ended up unguided!

    © D Elijah

  20. Three hours of data, unmodded Canon 1000D as per signature, 200P guided on a HEQ5. the weather during the data collection was fine but the light pollution from a recently built bank of industrial units to my northeast was obvious but i ignored it at my cost. this image is the best I could get from it (a nightmare, I processed it death), shouldn't moan really at least I finally got out under some clear sky for a couple of nights. all comments/advice good or bad truly welcome. thanks for looking Tim
  21. Managed a reasonably decent imaging session last weekend and had a go at one of my favourite little targets M97 The Owl Nebula in Ursa Major imaged 04.05.2018 William Optics FLT-110 refractor and Atik 314L monochrome CCD with Baader narrowband filters 10 x 300 seconds H-Alpha, 10 x 300 seconds H-Beta and 10 x 300 seconds OIII Assigned to R, G & B channels respectively to give a false colour image
  22. Hi! My first post so I'm little nervous ;-) I'm still a beginner but I decided to show my work. Here are my photos taken in last 1,5 year with Nikon D7200, Sky Watcher 150/750 (Newton) telescope with Baader MPCC on HEQ5 SynScan mount with self-made bluetooth adapter and ASCOM jolo-focuser guided with 50/172 guider scope and QHY5LII Now I'm working on better post-processing and calibration of my photos... M51 20x300s ISO1600, 3x dark M97&M108 12x300s ISO1600, 3x dark NGC6960 20x300s ISO1600, 3x dark NGC7023 11x300s ISO800, 3x dark Leo Triplet 12x300s ISO800, 3x dark Best regards! Tomek
  23. From the album: DSO, Nebula, Galaxies, Comets etc

    M97 The Owl Nebula in Ursa Major 24.03.2017 Celestron 8SE and Atik 314L monochrome CCD camera 20 x 300 seconds stacked in DSS and processed in PhotoShop CS2

    © vicky050373

  24. The Owl Nebula is a planetary nebula 2,0000 light years away in the constellation Ursa Major. It is approximately 8,000 years old. I assume the central star is the white dwarf that remains after it blew up. This is close to 2 hours of HaRGB data that I processed from the Liverpool Telescope (stacked in Nebulosity 4 and processed in PS CS5). Filters and exposures: sdss-r 22 x 90 s Ha 13 x 120 s (mixed 30:70 with sdss-r for red channel) Bessell B 19 x 90 s (blue channel) Bessell V 12 x 90 s (green channel) Comments and suggestions appreciated. The data was rather good and revealed a lot of detail but I may have been a bit too enthusiastic in the processing, and some may suggest it is a bit too much magenta in the outer shell. After uploading it I notice something looking like a gradient at the bottom. Somehow the SGL server reveals such thing much more than my screen when working with Photoshop.
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