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This is one of the first targets I shot and was happy with since the beginning of my astrophotography journey Almost 4 years later, I decided to shoot again this nebula, this time with better gear and traveling to darks skies for most of the data. Even though it resembles the old image's colours, this new one is more accurate from the real colours point of view. Most of this nebula is made of ionized gases which emit light at certain wavelengths. Most of the emission of the hydrogen comes out as deep red, whilst oxigen emits a blue-green light mostly. But, besides the emissions in this -
From the album: Deep Sky III
This image represents an attempt to obtain natural looking star colours with only narrow band data. It consists of the traditional SHO pallette, modified with the Bob Franke adjustments. Whilst this yields pleasing colours on the Trunk, the purple star halos, which also penetrated into the nebula did not look natural. I therefore parked this result and tried a bi-colour (HOO) approach. In my opinion, this led to less attractive Trunk colours but more naturally coloured stars. I blended the two results in an attempt to get the best of both approaches. LIGHTS: Ha:12, OIII:16, SII:8 x 1800s. -
From the album: Deep Sky III
A narrowband data blend of Ha, OIII and SII data combined with LRGB stars. -
From the album: Deep Sky III
In an attempt to capture both detail and LRGB colours I mapped RED to (0.5*SII)+(0.5*HA), GREEN to (0.2*HA)+(0.8*OIII and BLUE to OIII - I then blended an LRGB image with the NB result via the Pixinsight script NBRGBCombination. The image represents about 25 hours integration time. -
From the album: Deep Sky II
Yet another reprocess after taking on board comments. Changes are: 1) Star halos were reduced or removed. I discovered that when I had imported the image from CCDstack into PS I hadn't paid attention to the pixel values of the stars. On the previous reprocessed image, the brighter stars turned out to have a pixel value of over 200, making them very difficult to colour. If you do attempt this you get halos. I also used the smudge tool set to colour and a brush set at 40% opacity to clean up some halos. 2) Reduced colour artifacts - on the previous image I discovered that I hadn't bl -
From the album: Deep Sky II
After watching several hours of video tutorials on how to process Hubble Palette images, I made this result which uses the same data as my original attempt. The basic steps were: 1) create a Hubble Palette via PS clipping masks; 2) Adjust colours; 3) Remove NB stars via Stratton. 4) Use the Ha as a Luminescence layer (the OIII and SII where a bit noisy) - sharpen and apply High Pass Filter, reduce noise 5) Remove stars from Luminosity layer via Stratton. 6) Blend Luminosity into colour image. 7) Blend RGB star layer via PS Screen into image (this seemed to give a more natural effect than the -
From the album: Deep Sky
I found this particular image very difficult to post process, mainly because my "standardised" LLRGB workflow did not seem to give very good results. However, I found by eliminating various steps (eg Screen Mask Invert) a more pleasing result was possible. Post processing was also compounded by the fact that I discovered that my telescope had been pointing at slightly different parts of IC1396 and my normal stacking software (MAXIM DL) refused to stack all the subs. After a bit of experimentation, I discovered that CCDstack2+ was able to stack everything correctly. On reflection, I think I've -
From the album: The Next Step
Over a couple of nights managed to get 4 hours worth of Ha data (12 x 1200s); about an hours extra data was lost due to Satellite trails.© AJG 2014
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Hello all, I recently collected some OIII data for my previous attempt of the Elephants Trunk. I used a 2" Astronomik 12nm filter inside my TS Imaging Star 71, riding in my dual imaging rig. I knew it would be very difficult to point the TS71 correctly and frame the Trunk with the OIII filter blocking so much light, so I was lucky to have this method which put it spot on target. I added the OIII data as a "lighten" layer to the original blue channel, then used some "selective colour" etc (alignment was done with Registar). The new image is a bit dark, I know, but that is intentional
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Sometimes the weather gods look on you kindly. A nice new Samyang 135mm turned up from that well known jungle supplier, I managed to assemble it to my Atik 428ex mono along with an Ha filter and got the spacing correct, and low and behold the skies stayed clear - all on the same day! I am sure there is room for improvement with the processing but this is IC1396 processed in PI; STF applied with HT, and a little HDRM + LHE to try to tease out some detail. Any help on improving the processing would be gratefully received - I really don't feel I get the best out of processing mono image
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Here is a image based on more Ha data from the last nights but here mainly collected by my Canon 300mm f/4 lens (38 x 10-12 min with an unmodded Canon 60D ISO1600) with Ha data from my 5" refractor (sitting side by side, 18 x 25 min with a Canon 60Da ISO1600) added centrally. The RGB also comes from the Canon lens and a 60Da but collected in October (96 x 3 min ISO1600). C & S most welcome Cheers Göran EDIT: I added the Ha data as a B/W image
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Can hardly believe it but we have had several clear nights up here recently. Here is Ha data captured with my ES 5" apo refractor and a Canon 60Da (18 x 25 min over the last two nights). So it is captured with a Ha sensitive DSLR. To the Ha data I have then added RGB data from October 2017 taken with a Canon 300mm f/4 lens (96 x 3 min) and the ES refractor (35 x 10 min), so totally 18 hours of bits and pieces of data. All with Canon 60D or 60Da cameras at ISO 1600. Ha was primarily used as Lum. Comments & Suggestions most welcome! Cheers Göran
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Clouds, clouds and rubbish seeing have been the order of the day here. Finally managed to get something over the past three nights. Seeing was not great and the target hid behind the trees until 00.30 so not too much time to get anything before the dawn started to appear. Taken with WO-ZS71 and 428ex this is 8 x 600s of Ha, OIII and SII - processed in PI and PS with some creative use of colour. I'm pretty sure there is more wrong with this image than there is right about it. As ever advice and comments always welcome. Not expecting to get anything else now until Augus
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Having waited patiently for the first sign of a nebula being visible from my back garden and coupled with the fact that I have recently acquired an Ha filter. I decided last week was the first real opportunity to attempt imaging my first narrowband image. Now I know this is way too early to be imaging Nebula so this was simply a test to get to grips with focusing, post processing NB images and other technical gremlins. Happy with the outcome even though it is woefully short on exposures meaning it’s a bit noisy. The 3nm Chroma Ha filter seems to be performing well especially as the El
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Finally managed to add some proper Ha to the previous version (which was a noisy mess of a thing!), so this is now: 7 x 600s and 14 x 900s (4 hrs 40 mins) of Ha 17 x 900s (4 hrs 15 mins) of OIII SII synthesized using a blend of 60% of Ha and 40% of OIII Nikon D5300a 2" Baader filters Skywatcher 80ED Skywatcher HEQ5 Pro 50 Bias and 30 Flats Guided with PHD2 and a finder-guider (QHY5) Captured with SGP Pre-processed in APP Post-processed in PS The extra Ha data has made a massive difference. So this one was much easie- 30 replies
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Given that we have infrequent clear nights in the UK, I'm always interested in exploring ways of increasing my imaging efficiency. So, recently, I acquired 7 30mins Ha subs of IC1396 but I noticed that quite a few of the subs had eggy stars (see below - I think it may have been windy). Rather than discard some of these, I'd thought I'd explore if I could somehow use these in an image stack but in a way that wouldn't erode image quality. After a bit of research and considering that I had only 7 subframes including quite a few dubious ones, I decided to use the Poisson Reject algorithm in CCDs
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Here is an image I took last month, around 8 hours of data. Taken with an FSQ and ASI 1600M Cool camera
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I used my new ASI1600MM mono camera for the first time back in November of 2016. The whole point of moving from my QHY8 colour camera to the mono was so that I could do narrow band imaging. IC 1396, the Elephant trunk nebula was a perfect first target and remains the best astro image I've taken to date. Here's the Hubble palette version I captured on my first outing with this great new CMOS camera After processing my data from my imaging session on M31 recently I found a folder of LRGB data on IC 1396 that I shot a couple of days before I received my narrow band filter
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Whilst I've attempted the Elephant's trunk nebula several times, I've never been quite happy with the results. Although I like the LRGB colour representation, my results often seemed quite dark and lacked detail. On the other hand, the detail available from a narrowband approach using the Ha, OIII and SII filters is impressive. However, I was also aware that some NB imaging combinations resulted in magenta stars, which I dislike. So, my quest was to find a half way house that gave me detail but also resulted in a close colour approximation to an LRGB approach. After some experimentation, I
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Since I've rather limited experience in processing NB data, I thought I'd experiment with trying to get naturally looking star colours with only NB data. I started with the traditional SHO palette, modified with the Bob Franke adjustments, see http://bf-astro.com/hubbleP.htm - whilst this yields pleasing colours on the Trunk, it also generated purple star halos, which also penetrated into the nebula and they did not look natural. I therefore parked this result and tried a bi-colour (HOO) approach. In my opinion, this led to less attractive Trunk colours but more naturally coloured stars.
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Had a bit of a stab at processing some data from the night of the 21st/22nd Sept - this is the Elephant's Trunk in IC1396 in Cepheus. Tricky to process, but ultimately, this needs a load more data. It would really benefit from some HA data as well to drag the faint stuff up a lot and get a bit more contrast in the trunk. Usual story of weather not playing ball though - I've not had a clear night since Image details: L:R:G:B - 130m (13x10): 45m (9x5) : 35m (7x5) : 35m (7x5) - RGB binned 2x. ST2000XM on WO FLT110 at f5.6 - all processing in PI. The bright stars are a bi
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Hello, Following my Ha Only version of the The Elephant's Trunk nebula I'm uploading this HaLRGB version of the IC1396. http://stargazerslounge.com/topic/257462-the-elephants-trunk-nebula/ For high res: https://www.flickr.com/photos/101543943@N04/22749472473/in/dateposted/ Hope you like it Haim
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Still working my way through my summer crop of data. Here's my take on that old favourite, Elephant's Trunk: Please click through for better resolution. 25x 300s lights at ISO1600, darks, flats and bias, equipment as per sig, DSLR at prime focus, processed in Pixinsight. I was experimenting with spacing of my coma corrector for this image, so it has some coma showing, this is a full frame image. I think I have better spacing now, but still not 100% happy with it, need to experiment more. I'm liking how the diffraction spikes on the newt can split multiple stars - if you zoom in on that brig
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This is an evolution of an image containing my RGB data (http://www.astrobin.com/266253/) to which Ole Alexander Ødegaard (aka Xplode) kindly allowed me to add his Ha data (http://www.astrobin.com/264601/). So, a mix of 5" apo refractor and 12" Newtonean attached to Canon DSLRs (a mono modded 6D for the Ha). Altogether 4 hours. I have posted the data previously but this version is quite different since I now used the Ha data as an extra luminosity layer, which sharpened the stars and emphasizes the nebula a bit more (although for the "head" of the nebula I only used the RGB data as it somehow
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It's been an age since I've made anything other than mono images (a combination of incessant scope tweaking and lack of clear moonless nights) so since I've finally managed to get some both some HA and OIII for a target I thought I'd try a bicolour. The image comprises 9x30 min subs of both Ha and OIII (3nm Chroma) with my G3 16200 on the E130D/Avalon linear. Contrast is a bit lower than it might be due to effects of the full moon and poor transparency in a lot of the subs and I've probably overcooked it for the amount of signal present. I've not used any flats yet (to do list) and there
