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  1. HI All, Sharing with you my latest image that I processed so far. This is the Eagle nebula (M16/NGC6611) in the constellation Serpens imaged through narrowband filters using an 8" SCT (at the native 2032mm focal length), with a QHY268M camera o a hypertuned CGEM mount. The total exposure time of this image was 18 hours and 25 minutes. Exposures: SII:17x1200s, Hα:17x600s, OIII:17x900s, Hβ:17x1200s @ BIN2x2/HCG:62/Offset:25 The color channel assignments are SII, HAlpha and OIII as RGB, and the HAlpha, OIII and HBeta (as RGB) used for the star colors. Clear Skies, Mariusz
  2. From the album: Deep Sky Imaging

    The Eagle nebula (M16/NGC6611) in the constellation Serpens imaged through narrowband filters using an 8" SCT (at the native 2032mm focal length), with a QHY268M camera. The Eagle Nebula is also known as the Star Queen Nebula and The Spire. Both the "Eagle" and the "Star Queen" refer to visual impressions of the dark silhouette near the center of the nebula, the area which was made famous by the 1995 Hubble Space Telescope image known as as the "Pillars of Creation". The total exposure time of this image was 18 hours and 25 minutes. Exposures: SII:17x1200s, Hα:17x600s, OIII:17x900s, Hβ:17x1200s @ HCG:62/OFS:25 The color channel assignments are SII, HAlpha and OIII as RGB, and the HAlpha, OIII and HBeta (as RGB) used for the star colors.

    © Mariusz Goralski

  3. From the album: Deep Sky Objects

    Telescope / shooting lens: Sky-Watcher Newton 150/750 Cameras for shooting: ZWO ASI294MC Pro color Mounts: Sky-Watcher HEQ5PRO SynScan GoTo Telescope / Lens Guides: SVBONY 60/240 Guide cameras: ZWO ASI462MC Programs: Pleaides Astrophoto PixInshight Filters: Optolong 2 "L-eXtreme Dual Band 7nm HA / OIII Filter Accessory: Baader MPCC Mark III Coma corrector MPCC Mark III Dates: May 12, 2021 Frames: Optolong 2 "L-eXtreme Dual Band 7nm HA / OIII Filter: 12x300" (1h) (gain: 120.00) -5C bin 1x1 Accumulation: 1h Dark frames: ~ 12 Flat field frames: ~ 12 Dark frames for flat field frames: ~ 12 Offset Frames: ~ 12 Wednesday Moon age: 0.63 days Average moon phase: 0.45% Bortle scale for assessing the darkness of the sky: 5.00 Temperature: 15.00
  4. From the album: Deep Sky Imaging

    My latest image of the Eagle nebula (M16/NGC6611) in the constellation Serpens, this time imaged through narrowband filters using my 8" Celectron SCT, at F10 - 2032mm focal length, with my astromodded and active peltier cooled Canon 40D DSLR. The color channels are SII, HAlpha and OIII as RGB, and color balanced to remove the heavy green color cast created by the strong Hydrogen Alpha signal. The total exposure time spent on this image was 20 hours and 57 minutes consisting of the following subs exposures: RGB: 13x15s, 19x30s, 17x60s, 12x90s, 17x120s, 15x180s HII: 2x600s, 9x900s, 4x1200s OIII: 1x600s, 8x900s, 1x1200s, 11x1500s SII: 2x500s, 14x1800s All at ISO1600.

    © Mariusz Goralski

  5. From the album: Deep Sky Imaging

    This image is a cropped and rotated version of the M16 image to emphasize the famous "Pillars of Creation" part of the nebula, made popular by the HST image of the same name. The color channels are SII, HAlpha and OIII as RGB, and color balanced to remove the heavy green color cast created by the strong Hydrogen Alpha signal. The total exposure time spent on this image was 20 hours and 57 minutes consisting of the following subs exposures: RGB: 13x15s, 19x30s, 17x60s, 12x90s, 17x120s, 15x180s HII: 2x600s, 9x900s, 4x1200s OIII: 1x600s, 8x900s, 1x1200s, 11x1500s SII: 2x500s, 14x1800s All at ISO1600.

    © Mariusz Goralski

  6. MarsG76

    M16 F10 July 2020

    From the album: Deep Sky Imaging

    © Mariusz Goralski

  7. MarsG76

    M16 F10 July 2020

    From the album: Deep Sky Imaging

    © Mariusz Goralski

  8. From the album: Deep Sky Imaging

    Crop of the re-processed full frame M16 June/July 2015.

    © Mariusz Goralski

  9. From the album: Deep Sky Imaging

    On 7th August 2015 I setup the scope and started imaging the Cat's Paw nebula, when I checked on the system 30 minutes later I was DISSAPONTED to find that clouds rolled in... I waited for the clouds to clear but no luck... While I was waiting for the clouds to clear before packing up I decided to reprocess my M16 data that I captured across 7 nights in June and July. Here are the reprocessed images... I'm quite happy with these seeing that the data was captured through Baader Ha, SII and OIII filters on a full spectrum modded uncooled Canon 40D, nights are quite cool tho, about the 6 degree C mark so I guess that helped. I concentrated on lowering the amount of purple halos around stars and attempted to preserve maximum detail, the purple halos are still there but not as severe as in the first version. I still have a bit of noise/grain in these images, but when I ran the noise reduction filter I started to lose detail, and the level adjustment that the detail wasn't effected too much the amount of noise reduction was not worth changing. I think this was the best balance between noise and detail.

    © Mariusz Goralski

  10. From the album: Deep Sky Imaging

    Imaged F10 on a 8" SCT. OIII and the SII data was very dim and I had to push it more to bring out some nebulosity in that spectrum increasing the noise... Hence the purple halos on the NB image. I'll reprocess the narrowband image and attempt to remove the purple by tightening stars in the SII and OIII channels. Image tech specs.... H-alpha: ISO400 7 x 1800s Subs 7 x 900s Subs SII: ISO800 12 x 1800s subs 4 x 2700s subs 5 x 2160s subs OIII: ISO640 4 x 1800s subs 6 x 2100s subs 5 x 1500s subs RGB: ISO400 9 x 630s subs 7 x 350s subs 10 x 150s subs Data captured across 7 nights in June and July 2015.

    © Mariusz Goralski

  11. From the album: Pillars of Creation

    Modified Canon 1100D with Canon 500mm f/4 L IS lens @ ISO1600. AstroTrac TT320 Mount. 25x 60 second lights 20x Darks 20x Flats 20x Bias Stacked in DSS and processed in PS. Taken on holiday in Fuerteventura.
  12. From the album: Pillars of Creation

    Modified Canon 1100D with Canon 500mm f/4 L IS lens @ ISO1600. AstroTrac TT320 Mount. 25x 60 second lights 20x Darks 20x Flats 20x Bias Stacked in DSS and processed in PS. Taken on holiday in Fuerteventura.
  13. From the album: Pillars of Creation

    Modified Canon 1100D with Canon 500mm f/4 L IS lens @ ISO1600. AstroTrac TT320 Mount. 25x 60 second lights 20x Darks 20x Flats 20x Bias Stacked in DSS and processed in PS. Taken on holiday in Fuerteventura.
  14. From the album: The Quatermass experiments - Astro images.

    As processing skills improve its fun to go back and work again on last years subjects so this is my reworking of the Eagle Nebula taken August 2012
  15. Observation 25-26 July 2017 Date: 25-26th July 2017 @ 19:50 – 2:30AEST Location: Backyard Equipment: 14” Skywatcher GOTO Dobsonian, Televue 31mm Nagler T5 , Televue 17mm Ethos, Televue 11mm Nagler T6, Televue 2X Powermate, Baader Neodymium, Baader Contrast Booster, Astronomik UHC filter. The first thing I noticed from the beginning is that there was more sky glow than I would like, it was quite obvious that the seeing won't be perfect. I keep hunting for maximum magnification and detail on planets so before observation I re-collimated the Dobsonian from scratch. This time I put a white piece of paper behind the secondary so it was easier to see if the secondary mirror is circular and centered. Second step was to use the laser to collimate but noticed that when I touched or span the laser, its reflection changed, so using it is pointless without first collimating the collimator (what da?) and proceeded to use the Cheshire. As a final step I tweaked the collimation on Saturn and a nearby star. Saturn: Saturn looked soft and fuzzy. The Cassini division was barely hinting itself in and out of a shade like apparition on the outer edges of the rings. There were 5 soft moons around it, but I knew that the seeing was too poor to properly test the collimation tonight. After a disappointing start tonight when comparing to my hope and expectation, while observing Saturn at 150X, at 20:40 (iPhone time, 20:38 "Star Walk" time) a bright satellite flew past and through Saturn. The flyby was not slow but wasn't as fast as a shooting star either. When checking for satellites on the "Star Walk" app, it turned out to be "Envisat". It is rare views like this that make a view memorable and special, by adding a bit of action to the scene. After seeing that Saturn looked quite soft and with the considerable amount of sky glow, I wasn't expecting to get the best views so I took the lazy approach to observing tonight and, after accurately star aligning the scope, selected the objects above 40 degrees in order from the "Deep-Sky Tour" option on the SW14 hand controller. Lagoon Nebula (M8): M8 was visible the same as I saw it last time I was observing and as before the sky glow killed all of the fine detail that I saw back in May. Again the main part of the nebula was visible, the dark lane was there, with a hint of structure with in it, as well as the faint nebulosity around the main “Lagoon” coming into view at 50X and 100X power. During dark nights, there is a lot more visible, especially detail wise within and around the nebula, but unfortunately tonight, that was washed away. As with most nebulae, the best way to view this nebula is by using the UHC filter. Omega Nebula (M17): At 50X and 100X the “Swan” is easily visible, along with some of the outer nebulae coming into view faintly around the “Swan”, particularly behind it. Higher magnification, 200X, the structure and shading was once again very easily visible within the Swan head and body. The use of the UHC filter is a must on this nebula to see all of the details. Still a lot of detail is visible for such a bright sky glow seeing condition. Eagle Nebula (M16): The "E" shape was quite easily visible, not as obvious as during a darker night but still visible among the stars in and around the nebula. I’m very sure that at 200X magnification and using the UHC filter, I saw the “dark pillar”, the middle one out of the “Pillars of creation”, the one with “squiggle” at the bottom of it in the photographs. At 100X there was a quite obvious dark shading where the dark pillar is situated. At first I thought it might be wishful thinking and talking myself into believing that I’m seeing hints of one of the pillars, as the seeing and transparency conditions are not the best, but the more I looked in the area, the more I was seeing a distinct elongated darkening at the correct spot, just under the two brighter stars within the nebula. Pavo Globular Cluster: The Pavo Globular is a very nice looking Globular cluster. At 200X it looked like a typical globular except that it has, what looks like, more brighter individual stars sprinkled at the foreground with the Globular shimmering behind it, a few scattered stars at the edges and one particularly bright star toward edge at the top left. This Globular is not as big as 47Tuc or the Omega Cluster but at higher power, it looks just as nice and interesting. This Globular is definitely in my top 3 Globular Clusters to view to date and I will make the effort to image it hopefully in the not too distant future. Butterfly Cluster: An open star cluster with a bright orange star within that drew attention to itself. At 50-100X magnification it sits nicely within the FOV of both the 31mm Nagler and 17mm Ethos. The Butterfly Cluster is a medium sized open star cluster and with the orange star glowing within it reminds me of two other objects, it sort of resembles the cluster within the center of the Rosette nebula with a touch of the orange jewel from the Jewel Box cluster in Crux. Trifid Nebula (M20): The nebula was surprisingly easy to see tonight considering the glow, but the dark lanes are easily visible, within the easy to see with direct vision, “Trifid”, the double star in the center is easily split and the blue nebula haze is quite easily visible to the right of the “Trifid”. The best way to see M20 was at 100X and 200X magnification and using the UHC filter, although the wide angle view with the 31mm Nagler did give a nice contrasty view of the nebula floating in space, with the wide angle, it was like looking out of a space craft port hole. Comparing the view of the Trifid Nebula to how I saw it from a dark location through the 8", it looked about the same, so not bad for seeing the same view but from a much brighter and worse seeing condition sky. Globular (M4): M4 is quite a small Globular cluster in Scorpius near Antares on the eastern side. This globular needed 200X magnification to resolve its core into granulated stars. Globular (M5): Another Globular Cluster picked from the SW14 deep sky tour hand controller. This Globular is quite bright and looks quite nice in the eyepiece, definitely a considerable amount brighter than, for example, M4 and M80. This Globular looks tightly packed at the core, where the granulation is visible at 100X very easily, and less dense sprinkling of stars at the edges. This Globular Cluster is a worthwhile object to observe during a night of observation. Wild Duck Cluster: This cluster is something different, heaps of stars quite tightly packed, looking almost like fireflies rather than wild ducks. There was the shimmer visible through it which gave it a “being alive effect", it is a good sight at 50X and 100X magnifications. As most objects, this one would really benefit from a dark transparent sky to have the "fireflies" as sharp pin points of light since tonight it sort of looked soft focused. Globular (M2): Another small globular needing 200X to resolve stars at the core, this one seemed tightly packed. I just had a quick look and moved on. Maybe I should have studied it a bit longer but initially it resembled M4 and other small globulars. Globular (M22): M22 is a bright Globular Cluster in Sagittarius. The Sagittarius and Scorpio constellations have, by the look of it, a lot of different types of Globular Clusters. M22 is almost as impressive as the Pavo Globular cluster, it is almost as bright and big as the one in Pavo which places it in close position four of my favorite globulars to date. At 100X I saw a dense core with less dense randomly sprinkled brighter stars at the outer edges. Definitely worth a visit. Globular (M28): M28 is another smallish Globular, not too dim, and a bit bigger than and not as faint as M4. This Globular looks good at 200X. Southern Pinwheel Galaxy (M83): Tonight the view of the galaxy was disappointing at best, all that was visible tonight was the glow of the core, no spiral arms were visible at all at any magnification, 50X-200X. Not even the “S” shape coming through, simply the sky was not transparent enough and I guess it didn't help for it to be getting quite low toward the west. Saturn Nebula: As the last time I looked at this planetary Nebula, it was a fuzzy greenish oval, looking almost as if it's always out of focus, only knowing I was focused by the stars near it. 300X needed to see a decent size, but still looking like a featureless oval that is poorly focused, UHC filter didn't help either. Looking at the Hubble image is obvious why it is looking out of focus. It is a planetary nebula within a fainter more diffuse nebula with a bar structure flowing through it, so at a lower resolution, fainter monochromatic view, the more diffuse nebula flows into the central nebula resulting with a fuzz oval view. Helix Nebula: The "Eye of God" initially looked like a smokey oval which was quite hard to see with no central star and initially only showed dimmer fuzzy center. I stopped observing at about 23:00 because I wanted to see the Helix Nebula higher up in the sky so I decided to comeback to the Helix later. I left the scope tracking on the Helix Nebula for almost 2 hours, and returning at 01:30 when it was much higher in the sky, I was pleasantly surprised that it was still in the FOV... not center any more but still in the 100X magnified Ethos eyepiece FOV. Using the UHC filter the smokey ring was much easier to see than before, when it was lower in the eastern horizon. The smoke ring was defined with a dimmer center, the top and bottom parts of the ring were noticeably brighter with the central neutron star visible when using averted vision. Some of the main stars that I remember in the image I took a while ago were also visible there around the smoke ring. The view in the 8" did not reveal as much detail even though I tried to observe it in a darker sky condition. Not bad for what I saw during a milky bright sky. I was under the impression that there was little or no difference between the 14" and the 8", but after seeing the difference in the Helix Nebula, perhaps I was wrong, and just have the wrong idea of what 3X light gathering power really means. I wonder how it will look under a dark, crystal clear sky. The view without the UHC filter made the central neutron star just barely visible with direct vision, along with the stars around the nebula but the nebula was a lot less obvious, still hinted at some nebulosity, but the structure was not discernible. Under a darker sky I'm sure the view will be staggering. M80: Much like M4 except a little bit fainter. M80 is near Antares on the other, western side. This Globular Cluster needed 200X to resolve the sprinkling of stars that seem to be more sparse at the edges. M9: This is a small and faint Globular cluster that needed to be magnified 200X to see any granulation through it but it is still small when comparing to The Pavo Globular Cluster, M22 or even M4 or M80. 300X was needed to see it at a decent scale where it was still a fair bit fainter than the other globs I observed tonight but at this power it had quite obvious star separation visible in the form of granulation all the way into the core. Neptune: At 150X Neptune was a tiny, pale blue disc not much bigger than the bright stars near it. There is no hope to see any detail in the atmosphere of Neptune so any more magnification is pointless, plus the atmospheric conditions wouldn't allow for it anyway, but it was a tighter point of light than last time I targeted it. It also was a lot higher in the sky. Seeing was quite poor tonight coupled with a lot of obvious sky glow visible to a level where the sky looked milky when dark adapted, resulting in loss of contrast and transparency causing fuzzy views and lack of details. The poor transparency was particularly visible on the brighter nebulae such as M8. The poor seeing also made it impossible to tell whether tonights careful collimation helped the ability to get crisp detail at above 400X magnification. As night went on, the condition improved slightly but still nowhere near the best seeing conditions which I experienced in May. The slight improvement in seeing conditions, along with being higher in the sky, might have been the reason for the increased details and features that I saw on the Helix Nebula after coming back to it 2 hours later. Looking at the objects I bagged tonight, most of the them, by far, were Globular Clusters so I guess tonight was a "night of the Globular". After not expecting too much due to the seeing and taking the lazy Deep-Sky Tour option tonight, I did get a few nice surprises, namely the Helix Nebula, a possible pillar of creation in the eagle and a few nice and bright Globular Clusters, few of which I saw for the first time. I noticed Pegasus/Andromeda at 02:30 as I was packing up and so I tried to find M31 with the binoculars but it was too low in the north, in the direction of many street lights that washed any hint of it away... I guess I'm situated to far south. If you read this novel of ramblings of a astro-nut to the end, thank you and congratulations. Clear skies.
  16. Hello all, This is my latest image of the Eagle nebula (M16/NGC6611) in the constellation Serpens, this time imaged through narrowband filters using my 8" Celectron SCT, at F10 - 2032mm focal length, with my astromodded and active cooled Canon 40D DSLR. The second image is a cropped and rotated version to emphasize the famous "Pillars of Creation" part of the nebula, made popular by the HST image of the same name. The color channels are SII, HAlpha and OIII as RGB, and color balanced to remove the heavy green color cast created by the strong Hydrogen Alpha signal. The total exposure time spent on this image was 20 hours and 57 minutes consisting of the following subs exposures: RGB: 13x15s, 19x30s, 17x60s, 12x90s, 17x120s, 15x180s HII: 2x600s, 9x900s, 4x1200s OIII: 1x600s, 8x900s, 1x1200s, 11x1500s SII: 2x500s, 14x1800s All at ISO1600. Clear Skies, MG
  17. Having waited in vain for the clouds to clear on Tuesday night, it was great to get out and finally see some stars last night! I'd picked out a new spot to try on the South Downs just outside Winchester, on a well made farm track that runs due South just across the A272 from Cheesefoot Head viewpoint car-park. In the daytime this is an airy downland spot filled with wild flowers and Skylark song, by night it offers a super horizon from SE. round to NW. with the pretty but invasive lights of Southampton port and Fawley refinery 15 miles or so S - SW. Lightpollutionmap.info says it has an SQM of spot on 21, a worthwhile improvement for a ten minute drive over my rugby pitch site at 20.27 and only a fraction lighter than Farley Mount - and minus the third of a mile carry through slightly eerie Yew woodland! I got up there about 11.45 - just in time for an ISS pass which I caught to the NW along with my first definite noctilucent cloud sighting to the N. Seeing was quite steady and transparency good outside of bands of thin high cloud that cleared as the night wore on. There was some haze that mingled with LP over the coast causing extinction below 10 degrees or so. I'd planned a recce session in the Sagittarius area using an ST80 and a couple of new filters - Baader O-III and ES UHC to try on the nebulae. After aligning on Arcturus and Altair I toured the region finding the UHC really helpful in cutting through the low-down murk. Many first views with the Lagoon Nebula M8, Eagle & Swan Nebulae M16/17 and Trifid Nebula M20 the standout highlights, the first of many visits I'm certain. All observations were made with a Baader Hyperion 24mm (21x) and Baader Classic Ortho 18mm (28x) and interchanging filters and natural view to tease out the detail. Later I switched to 2 inch mode and used a 31mm Hyperion Aspheric (16x) for some panoramic views. All stunning stuff! M16 elongated cluster, Hercules like shape, double upper L of “keystone”. UHC brought out dark lanes crossing. M17 prominent orange star above, glowing nebulous area below right of faint trapezium asterism. Dark tendrils with AV. M8 - epic. Bright clusters multiple dark areas and glowing patches. O-III enhanced the cloud to 20% width of fov in 18mm M21- arrowhead cluster M20 - stunning star spangled glowing nebula with dark lanes. Fuzzy cloud wider with O-III. M22 - bright compact glob. Triangle with centre star asterism to L. Diagonal pair to upper R. [RACI view] M4, 6, 7, 19 too low in murk over Southampton to pick out. Widefield (31mm Hyperion, 2-inch) on M8, 20, 21 stunning field. M24 bright blue beehive like M16/17 In same field. Wow. M18 - rich field, pronounced "V" to R. It was after 2 by this time, so I took a quick tour around M57, a squint at part of the Veil Nebula with the O-III filter (warrants much more time!) and grabbed a great view of M31 which was easily visible naked eye at this point. With the 18mm I was for the first time able to pick out M32 & M110 - bonus! I resisted the temptation to switch to Jupiter & Saturn, by now quite high to the South, packed away and enjoyed a last sweep of the Milky Way naked eye and with 10x50s - vertical and almost visible to the horizon (barring those port lights!). Rolled back down the hill after a lovely shirtsleeves session in a super new spot. Mainly today I am drinking coffee...
  18. Hello Astronomers, I got the Topaz Labs Detail and DeNoise PS plugins and I have to say that they are great... noise is literally seek and destroyed without effecting the detail.... After playing with it for a couple of days I say that the plugins are definitely definitely worth getting. I reprocessed my M16 data from July this year and used topaz detail and denoise to try to get some more detail... I also applied the denoise filter to a JPEG image of the horsehead nebula from last year and, well I think the results speak for them selves. Clear skies, MG
  19. Eagle Nebula (M16) by glowingturnip, on Flickr The Eagle Nebula (M16) is a young open cluster of stars in the constellation Serpens. It contains several active star-forming gas and dust regions, including the famous "Pillars of Creation", photographed by the Hubble Space Telescope. It is part of a diffuse emission nebula, or H II region. This region of active current star formation is about 7000 light-years distant. The tower of gas that can be seen coming off the nebula is approximately 9.5 light-years or about 90 trillion kilometers long.15x 300s lights at ISO400, flats darks and bias, equipment as per sig, taken with an unmodded noisy DSLR. Processed in Pixinsight.It's a little noisy, and could definitely do with Ha data, but not bad for my ratty old DSLR. There's definitely a shiny new modded Canon DSLR somewhere in my future I think.It's also a first light for my coma corrector, and guiding with my QHY.Hope you enjoy !
  20. Here's my latest, hope you like it ! 17x 300s lights at ISO1600, darks, flats and bias, equipment as per sig, modded DSLR at prime focus, Pixinsight processing. I actually took this back in July, but had a frustrating gap in processing when my laptop broke and had to be sent to Germany for repair - I had all the raw files backed up, but not the interim processed files nor the calibration files. There's a bit of coma still showing on this, but I think I've managed to get my spacings right now for some later runs still in my processing queue. The Eagle Nebula (M16, NGC 6611) is a young open cluster of stars in the constellation Serpens. Its name derives from its shape that is thought to resemble an eagle. It contains several active star-forming gas and dust regions, including the famous "Pillars of Creation", photographed by the Hubble Space Telescope (and by me). The Eagle Nebula is part of a diffuse emission nebula, or H II region, which is catalogued as IC 4703. This region of active current star formation is about 7000 light-years distant. A spire of gas that can be seen coming off the nebula in the northeastern part is approximately 9.5 light-years or about 90 trillion kilometers long. The cluster associated with the nebula has approximately 460 stars, the brightest of spectral class O, a mass of roughly 80 solar masses, and a luminosity up to 1 million times that of the Sun. Its age has been estimated to be 1–2 million years. C & CC welcome, hope you enjoy !
  21. Another try from the same night as M8, this time M16 Eagle Nebula in H-alpha, 7nm filter attached. It came out really nice I think.. Scope: Skywatcher EVOSTAR 80ED DS-Pro Mount: HEQ5Pro Camera: QHY168C Filter: Baader H-alpha 7nm Guiding camera: ZWO ASI120MC Guiding scope: Panagor 400mm 16x200s exposure/ 53min total at -10°C binning 1x1 Clear sky! Mariusz
  22. Hello All, Sharing with you my natural color image of the Eagle nebula. This project is a WIP as I'm working on exposing narrowband to emulate the Hubble image of the Pillars of creation, but I assembled the 2 hours of 15, 30, 60, 120 and 180 second subs which I exposed through the UV/IR filter for the natural color stars to use in the narrowband image. This has been exposed through a Celestron 8" SCT at F10 with my modded and cooled Canon 40D, tracked on a CGEM and guided with PHD2. The Hardware control and subs aquisition was carried out by APT 3.63. CS MG
  23. Another gift of a night for us here on the Central West Coast so I didn't waste it. Against the forecast of bad seeing and cloud cover I was treated to pretty steady skies so I jumped at another chance. I had learned quite a bit from shooting the Trifid nebula the night before as to what the rig needed so I shortened the spacing on the corrector lens ( bye bye rotator) and re-shot my flats into the sky at dusk with a white t-shirt wrapped over the end of the scope. As soon as Mars was into view and the sky dark enough I slewed to it, slightly de-focused and re-collimated the C8. Gotta love Bob's Knobs! Ok with that done I refocused and waited for the real Dark to set in.. Around 11p.m. I calibrated and tested the tracking accuracy of PHD2 and focus using tiny M9. 5 minutes was working but to play it safe I decided to go with 3 minute subs and after a bit of tweeking was ready for my real objective for the night... The Pillars of Creation have always fascinated me ever since the stunning Hubble images brought it so close to us and scientists finally had an understanding of what exactly was going on in this beautiful and amazing area of our sky. After that and since getting into AP it's been a goal of mine for quite a few years now. After imaging for over 3 hours total here are the results using my un-modded Canon and humble late 90's USA made Celestron C8. 35-180 second lights @ ISO 800 20 darks and 45 flats stacked and initially tweeked in DSS then into PS for WB and levels and curves and finally into LR for some slight tweeking and final sharpening. Please give me your thoughts on the processing and final image. Hope you get to capture your dreams as well every night...Look up!
  24. Hi All, Just sharing my latest image... this time it is the M16... I imaged this at F10 on my 8" SCT hoping that with the higher magnification I would get more detail in the pillars of creation... it's better then the one I've taken about 2 years ago using a f6.3 FR but it didn't come out as well as I hoped it would, the OIII and the SII data seemed to be very dim, so I had to push it more to bring out some nebulosity in that spectrum increasing the noise... I'm starting to think I'm reaching the limits of my modded 40D since my deep sky image quality seems to have stagnated... at least in narrow-band imaging. Personally I prefer the look of the natural RGB image, even though the narrow-band data acquisition was much longer. Image tech specs.... H-alpha: ISO400 7 x 1800s Subs 7 x 900s Subs SII: ISO800 12 x 1800s subs 4 x 2700s subs 5 x 2160s subs OIII: ISO640 4 x 1800s subs 6 x 2100s subs 5 x 1500s subs RGB: ISO400 9 x 630s subs 7 x 350s subs 10 x 150s subs Data captured across 7 nights in June and July 2015. Thanks for looking... Criticism welcome... please be gentle...
  25. Hi everyone, As I setup and started imaging the Cat's Paw nebula, when I checked on the system 30 minutes later I was DISSAPONTED to find that clouds rolled in... I waited for the clouds to clear but no luck... While I was waiting for the clouds to clear before packing up I decided to reprocess my M16 data that I captured across 7 nights in June and July. Here are the reprocessed images... I'm quite happy with these seeing that the data was captured through Baader Ha, SII and OIII filters on a full spectrum modded uncooled Canon 40D, nights are quite cool tho, about the 6 degree C mark so I guess that helped. I concentrated on lowering the amount of purple halos around stars and attempted to preserve maximum detail, the purple halos are still there but not as severe as in the first version. I still have a bit of noise/grain in these images, but when I ran the noise reduction filter I started to lose detail, and the level adjustment that the detail wasn't effected too much the amount of noise reduction was not worth changing. I think this was the best balance between noise and detail. I have AstraImage and it's great, but I heard that Topaz Labs Denoise is a good noise removal algorithm... Has any one used it, if so how does it compare to the likes of MoiseWare Pro, Astra Image and photoshop? Clear skies...
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