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Found 22 results

  1. Slowly dabbling with narrow band and the processing that is becoming more like art than science I really am enjoying it though, Imaged this in my red zone back garden last night, it's 10 x 300 secs each of Ha Oiii and Sii ( no darks as they looked weird ) Thanks for looking / feedback. DSS - Photoshop levels / curves - gradient xterminator - photoshop channel combine as per @swag72 tutorial - photoshop levels to balance colours to my taste - slight noise and star size reduction (Noels tools)
  2. I scrapped all the Oiii and Sii data I previously took during a full moon (about 15 hours worth) and retook it all when the moon was a bit smaller at 76%. Ha was taken during 98% and 67% moon. All the lights were taken on the following nights: 12th, 19th and 20th September 2019. Integration times, all in 600s subs unbinned: Ha = 28.33 hours Oiii= = 5.67 hours Sii = 5.67 hours The Ha data is really nice, and unsurprisingly the Oiii and Sii is not as strong (or nice). I'm missing that (vital) step in my processing routine of getting the Sii and Oiii properly stretched to match the Ha, before combining. I dont really know how to deal with the weaker data properly. Any pointers would be appreciated. What I do currently: All the data is loaded into APP into separate channels/sessions. The data is stacked and registered against the best Ha sub This produces individual stacks of Ha, Sii and Oiii that are all registered Each channel is processed with DPP in APP and then saved as a 16bit TIFF Each is opened in PS Stars removed with AA and any remnants removed and tidied up I then open a blank RGB document in PS I paste Ha into Green, Sii into Red and Oiii into Blue Adjust the selective colour settings to get 'Hubble palette' Adjust levels, curves, saturation until looks ok All the Ha Sii Oiii data is then combined together in a single 'super' stack in APP using quality weighted algorithm to create a 'luminance' That luminance layer is adjusted using levels, curves, and NC tools such as local contrast enhancement and deep space noise reduction (using masks to apply as required) The luminance is pasted onto the above colour layer, and incrementally added using gaussian blur Cropped and saved. Here it is anyway I haven't intended on any more exposure time for this one, but will consider it, if the expert opinion dictates otherwise! CS Adam
  3. Taken 27 July 19. from my ROR Garden Shed. I did take the stars out using Starnet but prefered the stars in 30 x 300s SII,Ha,OIII - 2.5Hrs TS65EQ with Atik EFW2 and ZWO AOG, Lodestar X2 guidcam. Mesu 200 mount ZWO 183mm pro at -20C 200 Gain. Processed in Pixinsight. Thanks for looking.
  4. Ok this is the core of the Heart Nebular shot using my Orion Optics VX10 reflector on a NEQ6 goto mount, with belt drive mod. Shot on 550d Canon which I have astro-modified using the Baader filter mod. I use an Orion thin off axis guider with a QHYL-II mono camera as a guide camera. Attached to that is an Astronomik UHC filter which is used to get rid of the light pollution. The Pictures were shot using APT on my laptop. This is 240s x9 shots on Friday 17th November 2017 before the clouds took over. This is probably the second time I've got the kit working all together, I've only ever managed 40minute exposures so far. I've got a Ha filter I've yet to use and I still have not got round to making that Bahtinov mask . :-) Maybe I can add some data to this at a later date. I'm not particularly happy with the stars, I think the camera train is slightly crooked. Which is why I'm getting the red halos. Anyhow all a good learning experience.
  5. Here's another wide field Hubble palette nebula, this time the Heart Nebula taken with an FSQ and ASI 1600MM Cool, All images unguided on a 10 mincron GM2000
  6. My first bi-colour narrowband image with my new OIII Chroma filter. Managed to add 4 hours of OIII to the existing 7 hours of Ha. As always I wanted more OIII data but I think I am done with the Heart Nebula for the moment. Having just processed Ha images for the last half of the year it took alot of extra time and effort to get back into processing colour images, just trying to keep that colour noise under control was a battle! I decided to go with a moody copper colour palette as I have imaged in LRGB previously and fancied a complete change of direction. Scope: William Optics Star 71 Mount: Celestron AVX Camera: Moravian G2-8300 – Mono Filters: Chroma 3nm 18x1500s Ha exposures (7.5 hours) @ -25c 9x1500s OIII exposures (3.75 hours) @ -25c Flats & BIAS Total: 11 hours Processed in PixInsight and PS.
  7. Put together with a collection of Ha subs from the last couple of months of varying quality plus some OIII taken on a couple of hazy nights last week. A fairly quick process with a bit of a half-hearted attempt at rescuing the stars at the end. As ever c and c's very welcome! Paul Tak E130D, G3-16200, chroma 3nm filters on Avalon Linear FR. Ha 20x 1800s OIII 9x 1800s
  8. From the album: Photos from Bury

    Date of image 14/08/2016 The heart nebula. Processed using DSS. Hardware details: Camera: Canon 600D (astro modded). Telescope: SW Evostar 120 with Baader UHC-S filter. Mount: AZ-EQ6 guided using a ST80 synguider. Image details: Lights: 76 x 3min at ISO 800, Darks: 50 x 3min 0 sec at ISO 800 (from dark library), Lights and darks separated by 30 sec intervals. Flats: 50 x 1/40s at ISO 800, Bias: 50 x 1/4000 at ISO 100. This was quite a difficult target in light polluted skies for a broadband filtered camera. Despite this, I was able to pull out quite a bit of detail. I am glad that I framed the nebula correctly (fitting in the open cluster as well as the vail of gas on the left). Very little of this detail is visible from the individual frames. A broad sheet of cloud interrupted imaging for about an hour but because of the almost unobstructed view I had of this nebula I was able to get more than 4 hours of exposures. There were no clouds after 00:00. Auto guiding was very stable, as before, the RA axis seems a bit sloppy, often with negative corrections, I checked the tracking rate but it was sidereal. The mount was east-heavy balanced and I reduced the RA aggressiveness of the auto guider around 20%. Processing was done in DSS, I increased the saturation by 30% and manually aligned the colour channel histograms. The red was stretched considerably more than the green and blue channels to really bring out the H alpha detail. I still have vignetting in the image (this image was cropped), but I do need to redo the flats of distant cloud rather than a monitor screen, perhaps this will solve the issue.

    © D Elijah

  9. Shibby

    The Heart Nebula

    From the album: Deep Sky

    Ha: 66x600s ISO-800 Colour: 23x240s ISO-800 Extra star colour: 18x120s ISO-400 Camera: Canon 450D, modded Scope: Skywatcher 150PDS Mount: Vixen GP Guiding: Orion mini finderguider + SPC900 webcam (unmodded)
  10. 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:
  11. I wasn't very impressed with my first attempt at IC1805 with my colour Trius SX26C camera (see my gallery if your interested), I decided it was a bit "flat". So, here's my second attempt, this time with H alpha on a different camera (Trius SX814) and a bit more post processing knowledge. Since the Ha is strong, I decided to blend via PS screen a small proportion of this into both the Luminescence and RED channels. I quite like the variety of star colours within the nebula, so I decided not to push them into the background too much. The final LRGB +Ha image represents about 10 hours of integration time. Alan H alpha LRGB + Ha Lights: L:10; R:10: G:14; B:9 X 600s. Ha: 10 x 1800s. BIAS: 100; FLATS:40; DARKS: 30 all at -20C.
  12. Shibby

    The Heart Nebula

    From the album: Deep Sky

    Ha: 66x600s ISO-800 Colour: 23x240s ISO-800 Extra star colour: 18x120s ISO-400 Camera: Canon 450D, modded Scope: Skywatcher 150PDS Mount: Vixen GP Guiding: Orion mini finderguider + SPC900 webcam (unmodded)
  13. AlastairW

    IC1805 Heart Nebula

    From the album: Messier and NGC Objects

    IC1805 Skwatcher 130pds ASI1600mm-c (-15) 7nm Baader Ha 10x5min lights No darks, flats or bias
  14. Hi still learning the ropes with my new Hypercam 183c pro i took this image of the heart nebula the other evening, and now I realise I want a scope with a shorter focal length haha. 22x 240s stacked and calibrated in PI. Final touch up in PS 2018 SW ED80 DS pro with Altair light wave 0.8 reducer. Heq5 pro, Altair astro hypercam 183c pro. Guided.
  15. Hey guys Here's a quick WIP version of the Heart Nebula taken with my usual gear, the Nikon D5300a, SW 80ED, and HEQ5 Pro. So for this constitutes: 11 x 1200s and 3 x 900s of Ha (so 4 hrs 25 mins in total) 30 Flats 50 Bias As usual, stacked in APP and processed in PS. It's well placed here in the UK right now so I'm hoping to get some OIII in the coming weeks. I'm never quite sure how much to process these images. Aside from the usual stretching, apart from a mild amount of deconvolution, sharpening, and contrast enhancement that's all I tend to do really. I've also attached a false colour version using one of Carboni's actions. C&C welcome as always. Oh, and Happy Christmas everyone! (it's December now, it's allowed )
  16. Here is the Heart Nebula (IC1805) taken in using my William Optics Star 71 f/4.9 refractor, Atik One 6.0 with Baader NB filters. Ha on Friday 2/10/2015 - 8 x 15 minutes. OIII on Saturday 3/10/2015 - 7 x 20 minutes. SII on Friday 9/10/2015 - 8 x 20 minutes. All binned 1x1. All processing done using PI. For some reason I am struggling to get PI to work with batch processing, so no Bias or Flats applied, and it is very clear from the image that it needs the Bias applying, so I hope that at some time I can work out what I am doing wrong and reprocess . Attached is an image and as I have just tried using Astrobin for the first time, also a link to that. All comments welcome http://www.astrobin.com/218344/0/
  17. Shibby

    The Heart

    From the album: Deep Sky

    Ha: 66x600s ISO-800 Colour: 23x240s ISO-800 Extra star colour: 18x120s ISO-400 Camera: Canon 450D, modded Scope: Skywatcher 150PDS Mount: Vixen GP Guiding: Orion mini finderguider + SPC900 webcam (unmodded)
  18. AlastairW

    Melotte 15

    From the album: Messier and NGC Objects

    Melotte 15 Skwatcher 130pds ASI1600mm-c (-15) 7nm Baader Ha 10x5min lights No darks, flats or bias
  19. Nice, clear and moon-free last night so I was looking forward to getting some colour subs for various targets, in particular this one! To add to my existing Ha for IC 1805, I gathered some 4min & 2min (lower ISO) subs; the idea of these being to try and maintain star colour on the brighter stars. I combined this colour data with the Ha and came up with the following. This nebula is almost entirely Ha it seems, and it's suprising how little colour data is needed when you have a decent Ha layer for it! (I say this because it works pretty well when only comined with a few of these colour subs) Still, it takes the total integration time over 13 hours which is by far my record! All comments & suggestiong are, as always, very welcome. I'm rather tired today so not sure my eyes are working properly! Ha: 66x600s ISO-800 Colour: 23x240s ISO-800 Extra star colour: 18x120s ISO-400 Camera: Canon 450D, modded Scope: Skywatcher 150PDS Mount: Vixen GP Guiding: Orion mini finderguider + SPC900 webcam (unmodded)
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