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From the album: Deep Sky Imaging
Another image of one of the most popular objects imaged by astroimagers... The Horsehead Nebula/Barnard 33 with Alnitak and the Flame Nebula, but exposed mainly through narrowband filters, but emulating natural colors of the object. I was planning to combine H-Alpha as red, OIII as green and H-Beta as blue channels to create a natural colour image through CCD narrowband filters, eliminating any light pollution or moon sky-glow in the process. Unfortunately, the last night when I was able to do any imaging of subs for this object was on the 20th February before it became cloudy every day and night with constant rain. Having already completed the capture H-Alpha and RGB data, I set my exposure plan to alternate between OIII and H-Beta subs during that night, which is lucky because I only had a short window of a few hours and it turned out to be my final night of imaging for the foreseeable future. I managed to get only 3 x 30 minute H-Beta and 4 x 20 minute OIII narrowband subs. After waiting for a couple of weeks, I figured that I'm not going to get much decent time on Barnard 33 before it become obscured by landmarks so I decided to combine my currently exposed subs, H-Alpha into red, OIII into green and H-Beta into blue, as planned, and added 25% intensity from my RGB subs resulting in the image above. This image total exposure time was 9 hours and 32 minutes, channels consisting of 15 x 600 second H-Alpha, 4 x 1200 second OIII and 3 x 1800 second H-Beta 7nm narrowband subs with only 25% intensity added from the 14 subs each through red (180s), green (300s) and blue (600s) filters. Taken through a 80mm Refractor @ f6.25, on a hypertuned CGEM mount with QHY268M camera. I think that my narrowband imaging imitating natural color experiment is (once again) successful... the first time I tried this filter to channel alignment was on the Trifid nebula last August. The advantages of exposing images through this narrowband filter to channel alignment is that most of (if not all) light pollution is rejected, imaging is possible during moon light (within reason), colors look natural, I find that more detail is captured through narrowband compared to broadband filters and narrowband filtered subs are much less susceptible to lens flares and/or internal reflections when there are bright stars near by to the object. The only disadvantage I can think of is that the subs exposure times are a lot longer, resulting in much longer total exposure times needed for each image... although I'm starting to doubt this fact now after seeing how clean my H-Beta and OIII stack ended up being when they were stacks of only 3 and 4 subs... perhaps shorter exposure time per channel will suffice?© Mariusz Goralski
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Hi Astronomers, Sharing with you another of my images... another image of one of the most popular objects imaged by astroimagers... The Horsehead Nebula/Barnard 33 with Alnitak and the Flame Nebula, but exposed mainly through narrowband filters, but emulating natural colors of the object. I was planning to combine H-Alpha as red, OIII as green and H-Beta as blue channels to create a natural colour image through CCD narrowband filters, eliminating any light pollution or moon sky-glow in the process. Unfortunately, the last night when I was able to do any imaging, to expose subs of this object was on the 20th February before it was cloudy every day and night with constant rain. Having the H-Alpha and RGB data in the can, I set my exposure plan to alternate between OIII and H-Beta subs because during that night, which is luck because I only had a short window of a few hours and it turned out to be my final night of imaging for the forseeable future. I managed to get only 3 x 30 minute H-Beta and 4 x 20 minute OIII narrowband signal. After waiting for a couple of weeks, I figured that I'm not going to get much decent time on Barnard 33 before it become obscured by landmarks so I decided to combine my currently exposed subs, H-Alpha into red, OIII into green and H-Beta into blue, as planned, and added 25% intensity from my RGB subs. This image total exposure time was 9 hours and 32 minutes, consisting of 16 x 600 second 7nm narrowband H-Alpha, 4 x 1200 second 7nm narrowband OIII and 3 x 1800 second 7nm H-Beta with only 25% intensity added from the 14 subs each through red (180s), green (300s) and blue (600s) filters. Taken through a 80mm Refractor @ f6.25, on a hypertuned CGEM mount with QHY268M camera. I think that my narrowband imaging imitating natural color experiment is (once again) successful... the first time I tried this filter to channel alignment was on the Trifid nebula last August. The advantages of exposing images through this narrowband filter to channel alignment is that most of (if not all) light pollution is rejected, imaging is possible during moon light (within reason), colors look natural, I find that more detail is captured through narrowband compared to broadband filters and narrowband filtered subs are much less susceptible to lens flares/internal reflections when there are bright stars near by or near the objects. The only disadvantage I can think of is that the subs exposure times are a lot longer, resulting in much longer total exposure times needed to be spend on each image... although I'm starting to doubt this fact now after seeing how clean my H-Beta and OIII stack ended up being when they consisted only of 3 and 4 subs and perhaps shorter exposure time per channel will suffice? Clear Skies, Mariusz
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Horsehead Nebula - Canon 600D (modified) with Skywatcher 150P and EQ 3-2. 12 min @ ISO800
KevinPSJ posted a gallery image in Member's Album
From the album: Kevin Hurleys Deep Space Objects
First nebula imaged with my newly acquired Canon 600D (modded). Lots of struggles with tracking so only managed 20 subs x 30s of lights. Really pleased with the amount of red nebulosity that was captured in this short session though so looking forward to more to come in the future. Processed using siril and startools.© Kevin Hurley, 2022
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This week some clear moonless skies let me get some imaging time on Orion. I combined this with my previous imaging of Orion from last month. The result is a lot better than just using the previous data. Taken in suburban Birmingham. Canon M6 mark II Canon 200mm lens Skywatcher Star Adventurer 3 hours 52 minutes 42 seconds total capture time Combined, stretched, light pollution removal in APP Final processing with Adobe Photoshop & Adobe Lightroom Classic
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From the album: Deep Sky Imaging
The "Flame" Nebula - NGC2024 is an emission nebula in the constellation "Orion", located about 1350 LY away. This image was a side project after the two galaxies (NGC1512 & NGC1232) I was imaging on the same dates have drifted out of line of sight. This image would have been perfect for such a short exposure time at this focal ration if not for the corrector plate reflections caused by the bright star, "Alnitak". This image was exposed across multiple nights between 14 and 31 December 2021 for the Luminance, Red, Green and Blue channels for a total exposure time of only 3 hours and 45 minutes. Image taken through a Celestron 8" SCT at f10 (2032mm focal length) using a QHY268M astronomy camera on a CGEM mount.© Mariusz Goralski
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From the album: Astrophotography
Taken with my iOptron Skytracker and Canon 70d with 300mm lens. Wish I'd stayed out longer as the Horsehead was just starting to show! 25 x 1 min exposures at ISO 6400.-
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From the album: Stars and Constellations
Taken using Canon 100D on Skywatcher Star Adventurer - 55mm lens - single 4 minute exposure at ISO 800 You can clearly see M42 The Orion Nebula within "the sword", and there is a hint of The Flame Nebula and The Horsehead Nebula around the bottom left star of "the belt" Taken during a trip out to The Dales on Thursday night at a nice dark site between Kettlewell and Hawes© Vicky050373
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From the album: DSO, Nebula, Galaxies, Comets etc
The Orion constellation taken 14.01.16 using Canon 100D on Skywatcher Star Adventurer. A reworking of my original image using Gimp. Bringing out the detail and colours of the nebula has unfortunately also brightened the LP to the lower half of the image. You can clearly see M42 The Orion Nebula within "the sword", and there is The Flame Nebula and The Horsehead Nebula around the bottom left star of "the belt". You can also see an element of Barnard's Loop which is the red band that curves around the left hand side of the image.© Vicky050373
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The Horsehead , The Flame and Alnitak - HaO3RGB JanFeb2020
MarsG76 posted a gallery image in Member's Album
From the album: Deep Sky Imaging
I managed to get some time to process another of my images exposed in January/February 2020. This was the last image when my USB port on my Astro40D failed. This happened while imaging this scene but it happened toward the end of the imaging plan so I got almost the subs that I wanted. The total exposure time was 16 hours and 16 minutes in ISO1600 for all of the subs, RGB, (OSC through the UV/IR Cut filter), HAlpha and OIII. Imaged through my 8" SCT at f6.3, 1280mm FL.© Mariusz Goralski
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From the album: The next step.
I like the flame nebula and the horsehead appearing was a bonus as well. approx 16 x 1min exposures canon 300D, 200p EQ5 - DSS.© Aenima
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I gave orion another quick go with no moon, but this time with only 50x6sec subs and no callibrationframes. actually I am quite happy with the results. (have a bit of issues with color balancing) let me know what you think! I have attached a tif version and a jpg. I think the tif version looks the best. Orion widefield 27-11-2016.tif Still find myself overprocessing Clear skies! Victor Boesen
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Heres my version of the flame nebula, take last month. Taken through my MN190, in h-alpha, the camera was an Atik 314 mono. Did this one last year, but more subs this time improved it from last attempt. 18 x 8 min subs...........
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I don't seem to get to do many imaging projects for myself these days. This year in particular seems to have been particularly lacking in clear dark nights, I don't know if you would agree? Complicating matters further in my locale has been a huge and long lasting A45 bypass, three years and still not quite finished. The site has been working 24/7, and they put perimeter lights all around the temporary site office complex. At the same time my kind neighbour (who knows what I do for a hobby and for pocket money) decided to install the brightest floodlight I have ever seen, and leave it on all night every night, shining at 90° over my garden.... At any rate, I found some subs that I captured in March of this year using a Skywatcher Esprit 150ED, and Atik 11000 camera. I don't actually remember capturing the data to be honest, so it was a nice surprise to find it on my HDD. Possibly the most photographed DSO in the sky, the iconic Horsehead nebula is instantly recognisable. For this picture I have combined a little bit of RGB colour data with the bulk of the data gathered with a Hydrogen alpha filter. Recently @ollypenrice posted a lovely picture of the same area, and somebody made a Facebook comment about letting the stars shine out. Which got me to thinking, rather than try an minimise the effects of Alnitak, the huge, hot, blue star on the mid left, I'd just let it do it's thing, dominating the picture, as it dominates in the eyepiece. Although the flame nebula and rear of the Horsehead are the brightest emission nebulae in the vicinity, the whole area is awash with thick clouds of gas and dust. This image represents the way I imagine the area would look if we could get in a bit closer. The image represents around 15 hours of Ha data, and 45 mins or so of Red, Green and Blue. Thirty minute Ha exposures. I've included the Ha image alone, and also a cropped approximation of the actual eyepiece views you may experience in dark skies, with a 16 inch telescope, using a Hydrogen beta filter. I saw this for the first time in the autumn and had of those astro moments that stays with you for a long time. A Hb filter is definitely on my shopping list once I get my dob mirror sorted. Thanks for looking. Tim
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Hi! I've recently acquired a new Astromodified Canon rebel XT and I've tried to take pictures of nebulas using it but I've noticed that there are these weird black artifacts that keep appearing in my images. Would like to know if anyone has experienced this before? Or are these dirt/dust specs on the camera, filter, and telescope glass? I've attached some of my edited and raw pictures for your reference. The black artifacts can already be seen in the raw image of the horsehead nebula and after stacking I think it got amplified. Anyway, advance thanks and I hope everyone's doing well.
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Hello Astronomers, I managed to get some time to process another of my images exposed in January/February. This was the last image when my USB port on my Astro40D failed. This happened while imaging this scene but it happened toward the end of the imaging plan so I got almost the subs that I wanted. The total exposure time was 16 hours and 16 minutes in ISO1600 for all of the subs, RGB, (OSC through the UV/IR Cut filter), HAlpha and OIII. Imaged through my 8" SCT at f6.3, 1280mm FL on the CGEM mount. Clear Skies, MG
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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
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Greetings Astronomers, The work on imaging my next object has begun, and as always and common to us all, I have to juggle imaging between clouds and moon phases. This is 3 hours of halpha data of 900s and 500s subs captured the night before full moon and on the full moon night through a 7nm Baader Halpha filter using a modded Canon 40D DSLR. I'm hoping to spend a night imaging 30 minute subs (when the moon shrinks to last quarter or smaller) to try to capture some of the dimmest nebulosity as well as spend perhaps another night imaging 15 minute subs through a Baader 7nm OIII filter to see what difference adding OIII signal to the final color image will make. Before the moon was first quarter I've acquired 3 hours of usable RGB data across 2 mornings of 300 second subs. After stacking I realized that I need more RGB subs for enough SNR to stretch the data, so my plan is to perhaps spend another night of exposing 300 second subs but through a unmodded DSLR, once complete, I'll stack and process the RGB frames and add the narrowband data to it for a full color image. Sorry for the drawn out ramble... clear skies, MG
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Not very exciting I know but here is my effort at the flame with no mod camera. It did also pick up the HH (just) but was right at the very edge of the frame. 120 x 29s 20 Dark 20 Bias SW200pds EOS 5dmkiii unmodified