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Showing results for tags 'narrowband'.
Found 76 results
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Hi everyone! The Tadpole Nebula and the Flaming Star Nebula captured over three nights of the unexpected nice weather we had a couple of weeks ago. A number of firsts with this image: 1. My first mosaic - keeping it simple with two panes! 2. First time I left my imaging rig outside... (I used a telegizmo cover) and it was perfect, allowing me to get imaging very quickly on each night 3. First time using powerful scripting tools in my capture software, APT, to move to the second pane and starting imaging automatically...worked really well! APP was used for pre-processing and stitching the mosaic together, while Pixinsight was used for image processing. A total of 10.9 hours integration time. Full details on Astrobin Thanks for looking! -
Here's my effort from 2 nights ago under an increasingly rare clear and moonless night 1hr each of HA:OIII;SII using a Skywatcher esprit ED80 and ATIK 460 camera.
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- ngc2244
- narrowband
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Good evening all, It's been a while. Here's a quick Rosette for you, a work in progress... NGC2237 - The Rosette Nebula Constellation: Monoceros Date taken: 30/11/16, 1/12/16, 19/12/16 & 3/1/17 Location: Bean, Kent 10 hours total exposure, 20 min subs; Ha:11, OIII:10, SII:9 Camera: QSI683wsg8, set point cooling -10°C, Astrondon Ha 3nm, OIII 5nm, SII 5nm Scope: Skywatcher ED80 DS Pro Mount: Paramount MX+ Guidescope: N/A Guide camera: Lodestar2 The SkyX Professional, PixInsight, Nebulosity 4, Adobe Photoshop CC 2015 NGC2237.tif- 5 replies
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- ngc2237
- caldwell 49
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The fine, dry conditions that we had for a few nights in the last couple of weeks enabled me to capture about 9 hours of narrowband data of M1. I need to capture some new flats following a slight change to the imaging train so the image below is not as good as it might be but it still is worth showing, I hope. I'll reprocess when I have the new flats and post an update. Equipment: TS (GSO) 12" truss RC (Operating at 1700 mm Focal Length with AP focal reducer) with modified back plate, Mesu200, Atik383L+, Atik EFW2, Lodestar X2 on Atik OAG Captured with MaxImDl and processed in Pixinsight. Exposure: S-II=H-A=O-III = 12 x 900s each filter. Combined using SHO script in Pixinsight and composited with a synthetic luminance made from all the subs. The colormask (sic) script in PI was helpful in modifying the image to a more pleasing (to my eye) colour palette. Derrick
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- m1
- crab nebula
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Does it make any sense to shoot H-beta along H-alpha for narrowband imaging? They are both arising from the same element, although I don't know whether their ratio remains the same for all emission nebulae...
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Had my first go at this target in narrowband with the QHY5L-II-M. Was very skeptical if i could use the extremely faint and noisy OIII data at all, but i think it did somehow work, although it's a bit on the noisy side. all in all i'm very happy with the result, especially for my first attempt. Not sure if i made the proper color balance though? Any tips and thoughts are welcome. Captured with the QHY5L-II-M at 50% gain, unguided with a 135mm F/3.5 Olympus lens. 100x 120sec OIII 47x 120sec Ha
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- qhy5l-ii-m
- bi-color
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I present you an image of the Flaming star nebula and the Tadpoles. I have 2 versions. Ha only and HOO. I started with 4 panels mosaic shot with the 130PDS, each panel is ~2h exposures. Then I shot another 7.5h with the Canon 300 F4 L lens, but the result was awful, compared to the mosaic. So I added this only in a small amount and only on the darker areas of the image. For the O3 image I only used the Canon lens. The IS element inside gives me a lot of headaches, and I have coma in some corners, other corners are out of focus, etc. And it behaves differently each session. Not only the IS was not playing nice, but I also had focus shift due to temperature drop and I did not refocus. The camera used was the ZWO ASI1600MMC, cooled to -15C. 180s subs at 300gain with the 130PDS and 300s subs at 139 gain with the Canon lens. Mount: AZ-EQ5. The lens was wide opened and the newton was corrected with a SW coma corrector, hence the halos around the brighter stars. Guiding: OAG with 130PDS and side-guiding with a 200mm lens for the Canon lens shots. Software: APT and PHD for acquisition; DSS, APP, StarTools, Registar, GIMP for processing. When blending the O3 I had to abuse star reduction, star removal, heavy blurring, masks, layers, etc. for a decent result. Link to a better resolution and other details: http://www.astrobin.com/315278/D/ Thanks for watching, Alex -
This is the result of my first attempt at narrowband imaging with a OSC CCD. I used the QHY8L and a Baader 35nm Ha filter (not quite narrowband - more like moderately narrowband). The image is the result of 10 x 300s standard RGB exposures with 3 x 1800s Ha exposures, binned using the 'low noise 2x2 bin' feature of Nebulosity 3, and added as a luminosity layer in Photoshop. I am a little disappointed that the outer halo didn't show up but I guess that is the limitation of using a OSC CCD with only 25% of the incoming light being captured. It may also be down to the broader bandwidth of the 35nm filter. However, adding the Ha does show up a little more detail in the nebulosity that my standard exposures, so it was a worthwhile experiment although I won't be forking out on a full set of narrowband filters just yet.
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Still dipping my toes into narrowband imaging I decided to have a go a the crab nebula. Processing is done in a sort of Hubble palette with 15x10 min Ha as green, 16x10 min SII as red and 17x10 min OIII as blue. All binned 2x2 and imaged with an Atik 460 in an Orion AG12. Curves, levels, a little sharpening of the nebula and some colour adjustment. /Lars
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From the album: CCD venture
A h-alpha shot of the Wall section of NGC7000 aka north america nebula. ED80 - ATK16HR - Ha clip filter - EQ6 - finderguider 9x50mm PhD2 - photoshop - DSS. -
From the album: CCD venture
A h-alpha shot of the Wall section of NGC7000 aka north america nebula. ED80 - ATK16HR - Ha clip filter - EQ6 - finderguider 9x50mm PhD2 - photoshop - DSS.© 2016JayBird
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Hi everyone, The North America and Pelican nebulae are situated in the Cygnus constellation and are thought to be 1800 light years away. My favourite part of the image is "The Wall", which is the "Mexico" part of the North America nebula and is a source of intense star formation. The data for this image was collected all on one night and therefore could do with more integration, but I like the result. I've used my go-to "natural blend" narrowband (as originally suggested by Jon Rista on Cloudy Nights): R = 76%*Ha + 24%*SII G = OIII B = 85%*OIII + 15%*Ha I personally prefer this "natural blend" to the Hubble palette both in terms of look and ease of processing! 4 hours integration time, captured with WO Z73/ZWO ASI1600MM Pro/Astrodon Filters. Full details here. Thanks for looking!
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- deep sky imaging
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Hello Astro Peeps, I hope everyone is all good! Isn't there some amazing images on this site and others. Amateur imaging has never been so good! I myself have finally managed to get some data for an image, of which I am very happy. It has been so hot here it has been impossible to get any good data. One day a couple of months ago, I hung the thermometer from the grape vine under the back verandah and it was 47.5°C. Sounds far fetched, although true. I live in Adelaide, South Australia and we are 11km from the CBD and usually 1.5 degrees hotter than there! Anyway, I thought I'd try my hand at a Ha, OIII bi-colour image while waiting for my SII data to come in. There seems to be a halo issue with some of the filters for which I will need to do further testing so I apologise for their distracting nature. Details are with the image but basically 3hrsx15min subs for each channel. https://pbase.com/grahammeyer/image/169113477 You can scroll to the bottom to choose another size or auto to fit your screen. Happy photon collecting! ? Details for those that cannot see them. Telescope: William Optics FLT132 Guide Scope: QHY OAG Camera: QHY9 Mono @ -20c Filter Wheel: QHY 7 position Ultra Slim Filters: Baader 36mm unmounted L R G B HA OIII SII Guide Camera: QHY5L-II Mount: AZ-EQ6 Mount Control: EQASCOM Focusing: SharpSky Pro and Sequence Generator Pro 3 (automated) Bahtinov Mask: No (initial focus) Capture Software: Sequence Generator Pro 3 Guiding Software: PHD2 Calibration and Stacking Software: PixInsight Processing Software: PixInsight Number and Type of Data Frames: L= X min, R= x min, G= x min, B= x min Ha= 12x15min, SII= x , OIII= 12x15min. Binning: 1x1 Total Image Time: 6 hrs Location: Lockleys Observatory B, Tanunda, Sth Australia Light Box by Exfso
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- nebula
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Hello from Florida, ? I wasn't able to image the 4th and final day as AR2729 rounded the limb due to work, but I was able to latch on for three days while it had lovely visible umbra. This is spanning December 5th, 6th and 7th. Imaged in 6562.8A wavelength. B&W: Colored: Captured with: Celestron 150mm F8 Refractor (CR150HD) Daystar 150mm ERF Daystar Quark Chromosphere ASI174MM Camera with 2" GSO 0.5x Focal Reducer Very best,
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Hi all! I'm about to embark on my first narrowband imaging session tonight. If you're happy to share, I'd be interested to know the one thing you wish you had been told before you started with narrowband, what challenge it caused you and how you overcame that challenge? For some context, I've been imaging LRGB to now so have some general experience. Tonight, I'll be using an ed80 pro refractor with 0.85 reducer, moonlite focuser and motor, OAG, asi185mc guidecam, efw, asi1600mm-c on an azeq6gt. Filters are baader ha 7nm, OIII 8.5nm and Si 8nm, all 1.25". I'll be using sharpcap to polar align and SGP for acquisition. Current expected target is Elephant's Trunk. Thanks all!
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Hi all I'm just starting the plunge to the deep end of mono and narrowband imaging. I have read the available info from here (SGL) and other sources but the findings seem to be rather inconclusive. So here's the thing. Some of our fellow imagers seem to be boosting the nb signal by using luminance channel. Methods for LUM vary from using just the Ha, using all the nb channels combined or using lum filter or better yet using ccd grade light pollution filter. I'm sure there are other methods as well..? From what I gather, there are some "drawbacks" to each does't represent all the signal just uses the same total signal ratio (does not actually increase the S\N that is already there in each of the channels) --> there's no new "information" gained from here star size is/might be different than in nb channels? So what is the "industry standard" method to be used or is there any? According to my logic the only method that actually could add information is the last one. The problems caused might be fixable with post-processing? I am probably missing something here, but what? I should also note that ccd users might use different hw binning. Since cold cmos cameras (which yours truly has) do not support hw binning and low read noise negates the benefits somewhat anyhow, I would consider this to be a non-factor. Regarding the option 3. I would think that this same drawback would affect all those that image in LRGBHa...
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We had a patch of clear skies last Sunday night, and even though it was bitterly cold (and there was ice and snow everywhere) I made the executive decision to get outside and have a go nonetheless. I have to setup and teardown each session, but thankfully I was able to move the car a few metres and take advantage of the nice dry (and ice free) ground underneath. The plan was to grab some OIII data to go with the Ha I captured on the Heart Nebula a couple of weeks back (see link below) but all I could manage was 8 x 1200s before the clouds rolled in for good. In fact, 3 of the 8 subs were affected by clouds, but I decided to use them anyway as I figured it’s only going to get used for tone mapping, and not luminosity, and at such a short exposure time I really need all the SNR I can get. So I’m being a bit of a naughty boy by posting this before getting a decent amount of OIII first. This is just a quick once-through process and is still missing some things, so it’s very much a work-in-progress at this stage, but I thought I’d post it anyway and I’ll update the thread as I make changes. So far, all I’ve done is process the OIII image (which involved gradient reduction, stretching, removing the stars then stretching some more, then quite a substantial amount of noise reduction). Then I combined it with the Ha image above in my usual manner, i.e creating a synthetic SII using 60% of the Ha image and 40% of the OIII image, and then combining all 3 using Annie’s Hubble Palette action. So aside from some more work to refine the colour, I still need to work on the contrast, do some NR and also then finally some star reduction. C&C welcome as always! Details: SW 80ED with FF/FR (510mm FL) HEQ5 Pro Mount (belt mod) Nikon D5300a 11 x 1200s and 3 x 900s of Ha (2” Baader) 8 x 1200s of OIII (2” Baader) 30 Flats, 50 Bias. Dithered every frame. Captured in SGP. Stacked in APP. Processed in PS. Thanks for looking. The Ha image:- 16 replies
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- heart nebula
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I didn't think I'd ever see such a thing - a full Moon and cloud sweeping in! No, I tell you, it really did happen last night .......... So, my 20 subframe session on the Pelican Nebula turned into a misty 8 subframes before all the stars disappeared from view under heavy clouds. Worse was to come, image 6 was also totally clouded out leaving me with just 7 x 600 sec. Ha sub-frames to work with. On the plus side, my new focusing system worked flawlessly Camera: QSI 683 WSG-8 Filter: Baader Ha 8nm Telescope: William Optics FLT98 with WO FR IV reducer/flattener Mount: Mesu 200 Session Control: CCD Commander Stacked with MaxIM DL and finished in PhotoShop PS3 IC 5070 The Pelican Nebula- 19 replies
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- ic 5070
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Hello, I've been trying lately to acquire some data on the Elephant's trunk nebula area. I managed 2-3 hours one week ago on Ha on more than one night, after 4AM. Pretty tough the following days at work. As it was more a test for the next months when it will get high enough at reasonable hours, the subs were binned and I also wanted to shoot S2 and O3 just too see what's out there. I did this this morning, but there seems to be much less S and O emitting compared to H. Bellow is the Ha image, the S2 and O3 are waiting to be processed, but I'm afraid I can't get anything usable just from 1h each. I'll share them later. Could anyone also maybe share their processed channels separately? I can only find the Ha as mono on the internet. My Ha details: ASI1600MMC, -15C, bin 2x2, Canon 300 F4 L, Optolong 7nm Ha filter, a bit over 2 1/2 hours in 180s subs, 300 gain. Tiff link: https://drive.google.com/open?id=0ByhJ_xuQxcnjcjJBR1RhWWpmNlU Thanks and clear skies, Alex
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- ic1396
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Hello all, I started a while ago shooting the bubble and the M52, first in Ha, then RGB and then O3 too. 25min on each RGB channel, 5-6 h on Ha and 1.5h on O3. Here is the result: Then I asked myself if I should shoot L, more RGB, more narrowband or if I should go for another target. And I decided that I should try a mosaic in this area and catch the lobster claw too. The decision being took, I went below, left and then above again for panels 2, 3 and 4. R first, some of the G after. The rest of G and the B the next night. Last night I also shot 45 minutes of O3 on each of the remaining panels - 2, 3 and 4 and planning to shoot another 45 minutes on each panel the following nights, if possible. I will then leave the country for 2 weeks and I'll be back with a full moon when I will try to shoot some Ha. There will be no much time left either for this target as it reaches the limits where I can point my telescope from my balcony. I'm aiming for 1.5-2h of O3 on each panel and 2-3h of Ha this year. Supposing the acquisition can be done, I still have to stitch/process/stitch/combine all the layers. Now, this is something I've never done before and I don't know which is the best approach. I tried yesterday the new APP, I threw at him all the R subs and asked it to combine them in a mosaic way or a normal way. In mosaic it was failing with a null pointer exception and in normal way it was failing with an index out of bounds exception. So I answered myself an older question if I should wait for the APP or buy Registar and I bought the second after the first one didn't work. I registered and stacked with DSS all the R, G, B and O3 frames for each panel with the best R frames set as reference. Then I processed with StarTools each panel as RGB with the same settings and combined the RGB panels with Registar. Now this gave me a result which is almost ok, but you can see a separation line or two between panels 1 and 2 (the one with the bubble and the one below). I processed each O3 layer with StarTools applying the same settings and I combined these too with Registar. Then I split the RGB mosaic into channels and I added the O3 over the G and B channels as lighten only in GIMP and I combined back again the layers into an RGB image. I colour balanced and enhanced this result in StarTools. The result is attached. What do you think about my workflow and what approach did you find the best and how do you do it? Also, how can I normalize the layers and still be sure that I stretched them the same? There are some variables that come into play, the worsts mostly because during multiple nights I have different transparency and seeing conditions. Many thanks and clear skies, Alex PS. and an annotated version: http://nova.astrometry.net/user_images/1668494#annotated
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Hello all, I've been capturing photons lately on the IC1396 with a Canon 300 F4 L lens on an ASI 1600 MMC. I did that for about last month during which I didn't take the camera and the filters off the lens. My balcony is pointed towards ~NEE so I can only see and image the sky between ~30 and ~140 degrees in azimuth and up to ~50 in altitude (with some tricks I can extend that). I shot the Ha sometimes also with the moon still up in the sky, sometimes without, when the trunk rose above ~25 degrees in altitude, the O3 above ~30 degrees and the S2 above ~25 too. In total I have 10h of Ha, 6h of O3 and 5h of S2 taken during 4, 3 and 2 nights respectively. Last night was a pain with the S2, the download from camera freezing twice and guiding going weird. Anyway, this was the last clear night, the forecast says that is going to be cloudy for a while and even if it clears, the moon will interfere so I won't get more data for a while. Perhaps I will switch to something else. All subs are 300s at gain 139 (unity) and cooled to -15C. All calibration frames. The O3 flats looked a bit weird so I took them twice and combined the 2 results. I can't really describe the final combination as it was more trial and error / like/dislike. The L is ~75-80% Ha and O3 and S2 equally filling the rest. The RGB was combined in StarTools and in GIMP, the layer combined in StarTools having a much higher percentage in the final blend. All processing done in StarTools and GIMP and the resizing/aligning was done manually in GIMP. I don't know if I missed something about the acquirement and the processing. The lens seems to have some element tilted, you can see some coma in the bottom-left corner and bloated stars in the top-right one. Better than no lens/scope though and at F/4 is quite fast. This would be my longest project and the most detailed one (highest resolution). I think I could get a better result from processing, but it takes ages at full resolution. Therefore I call this the final result (for a while at least). I'm also attaching the Ha, O3 and S2 channels. Comments and critics are welcomed. You can also follow the progress and the testing for this target at bin2x2 here: Thanks for looking and clear skies, Alex
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A very rushed "First Light" image of my new kit. Many friends here know what I've recently purchased, but officially here is the announcement. Its a QHY9 Monochrome CCD camera with a Slim filter wheel for 7 x 36mm round filters. There are also LRGB Ha OIII and SII filters purchased. I also got a QHY5L-II guider and some other adapters to fit the whole thing together. After a couple tries, first light was last night and i've deviated from the M42 aka Orion Nebula image. This is the Rosette Nebula (Caldwell 49), and its associated cluster NGC2244 are approximately 5000 light years away in the Monoceros Constellation. Image is a stack of 18x300s in H-alpha lights, no darks and flats taken. Stacked using Median method in Deep Sky Stacker and quickly processed in Photoshop using only crop, levels, curves and unsharp mask. C&C are more than welcome.
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... or worst! These are two differently processed North American Nebulae.... But which one should I use for my Christmas cards this year? Decisions, decisions!
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THIS ITEM HAS NOW BEEN SOLD. This listing is for my personal narrowband filters (Kayron from Light Vortex Astronomy). They are the Astrodon Hydrogen-Alpha (HA), Oxygen-III (OIII) and Sulphur-II (SII) 3nm 1.25" narrowband set. These are considered the highest-end narrowband filters money can buy, able to produce images of exceptional quality and incredible sharpness, cutting through a vast amount of light pollution. The 3nm variants featured here are fantastic for pulling out fine nebulous structures clearly above background. For more information, please see Astrodon's website: https://astrodon.com/products/astrodon-narrowband-filters/ Please note that these three filters together currently retail at just over £1,710 from UK suppliers, €2,180 from European suppliers or $1,690 from US suppliers. Payment is preferred via bank transfer but PayPal is OK with an extra 2.9% to cover PayPal fees. I'll cover postage to you via tracked Courier. I welcome any questions you may have regarding this listing. Thank you for looking. -
The bubble nebula. Not much to add about the target itself as it is already popular enough. A combination of HOO shot with the ASI1600MMC + Astronomik narrowband filters through the 200mm newtonian tube removed from the dobson base and put on the EQ6-R. About 6h of exposure through the Oxygen filter and about 9h through the Hydrogen filter. Clicking on the pictures will redirect to the astrobin images where you can watch them in full resolution. Crop close-up And widefield Thanks for watching and clear skies to you too! Alex
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