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Found 9 results

  1. My first real attempt at capturing a DSO target over multiple nights and putting it all together afterwards. I am fairly happy with the result though my stars are too bright despite trying to actively control them throughout the post processing. I see from another post / thread that Narrowband can help control the brightness of stars. As I do not currently own any of these filters yet I have to stick to LRGB instead. Still to get all of the elements from capturing over multiple nights and post processing them all was my main achievement from this. What also struck me is how much post processing techniques have a major effect on the end result. After several false starts I followed some tips from a resource and the improvement was dramatic. I am sure more capable imagers would be able to extract far more detail. Not sure if I want / need to collect more RGB data as there is a greater amount of luminance data. The image details are: Light Frames, 1x1 Binning, Cooled -20c Luminance: 47 x 300 Secs (4 Hours) Red: 12 x 300 Secs (60mins) Green 12 x 300 Secs (60Mins) Blue 12 x 300 Secs (60mins) Total: 7 Hours Flats, Darks, Dark Flats and BIAS frames taken. Thanks
  2. From the album: DSO, Nebula, Galaxies, Comets etc

    First process of my NGC 6960 Western Veil Nebula image from 29.09.16 whilst at Kelling Heath Autumn Equinox star party Canon 100D and William Optics FLT-110 on NEQ6 Pro Synscan mount

    © vicky050373

  3. I have done some nebula hopping (Western Veil, Cave, Flying Horse / Wizard and Crescent) during the recent clear nights 3 - 5 October. Now clouds are back and I post what I have got. All with the ES 127 ED apo and Canon 60Da on the EQ8 mount. About 3 - 4 hours of data except for the Cave that only got an hour. Should collect some Ha for them.
  4. It was probably a long shot giving my planetary/guide cam a go at long exposure deep sky with narrowband, but had to give it s try at least... As i live in Norway it's only nautical dark these days, so i'm hoping for better results in the winter time. This is a stack of 15x 600s exposures with gain set at 12. No darks, bias or flats added (yet). Also no guiding. Quickly processed in PS. 2 versons where one have a bit aggressive noise and star reduction. Taken with the QHY5L-II-M cooled to about -5c, 7nm Ha filter, 50mm F/1.8@2.8 lens.
  5. This target was fainter then i thought and got a lot more noisy then i had hoped for - but at least in smaller prints it looks ok and i'm happy with it for now. I'll for sure come back and capture loads more data on this target at a later point. Taken with the Explorer 200 and unmodded 550D. 55 min total exposure at ISO3200 for 7nm Ha, 30 min total exposure at ISO1600 for 8.5nm OIII.
  6. It's always fun to image a new target and it was worth using a rare trip to a place with much darker skies (Kelvedon Common in Essex) to try something a bit more challenging. This could have done with more exposure but nights are short at this time of year and dawn put a stop to the session. 29 x 120 second exposures at 400 ISO (58 minutes integration time). 12 x dark frames 79 x flat frames 21 x bias/offset frames (subtracted from flat frames only) Captured with APT Guided with PHD2 Processed in Nebulosity and Photoshop Equipment: Sky-Watcher Explorer-150PDS Skywatcher EQ5 Mount Orion 50mm Mini Guide Scope ZWO ASI120 MC imaging and guiding camera Canon 700D DSLR
  7. NGC 6960, the Western Veil Nebula in Cygnus, PHD Guiding on a 9x50 finderscope, prime focus, telescope SW 200P 8" (200mm) f/5 Newtonian reflector, 36x3m, 36f, 30db, integration time (altogether) 1:48h. This one I processed a little bit differently. While I'm not an expert yet, I know processing, but was wondering why my pictures are not as good as they could be. Gradients, light pollution, colors thrown off. So a lot of work went into this one, changing the file format on the lights, darks and bias (into tifs) in the Faststone Image Viewer software,(so I could work with them), cropping and resizing all except the flats, which I didn't use, in Photoshop (creating an action so it would go faster). Instead, each sub got its own gradient removing flat, which I made from the original image, 36 of them, to subtract the gradient (and some off color), and the gradient only, in Photoshop. Worked wonders. Then into DSS for stacking and bias, dark subtraction. Then back into Photoshop for final processing. This was done with a Canon EOS1100D non-modded from a light polluted area.
  8. Hi guys We had a few hours of clear skies here on Saturday night, so I set about getting some O-III for the Western Veil, after I had collected the Ha last month. Thankfully, the moon wasn't around, so even though I didn't get that many subs (only 10) at least they were of good quality. I actually fell asleep during the capture, and woke up to a 'Sequence Aborted' message in SGP and the sight of PHD2 going mad due to thick clouds. Quickly ran outside and thankfully there was no rain about (phew!). I got 11 subs in total, but the last one was totally unusable due to the clouds. The 10th one was affected too, but still looked useable to me, given that I know from experience that APP's 'Quality' stacking mode would know to give it less of a weighting, so I kept it. So this is 15 * 1200s of Ha and 10 * 1200s of OIII (8 Hrs 20 mins in total). Taken with the usual gear: Nikon D5300 (modded); HEQ5-Pro and a SW 80ED. Calibrated with Flats, Bias, and a Bad Pixel Map. APP used for stacking and gradient reduction. Everything else done in PS (including running Carboni's 'Synthesize Green Channel' action). After now having processed both the Eastern & Western Veils, I have to say I have found them to be among the hardest targets to process that I've done so far (although it's still early days for me yet, think I'm still under 15 DSO's and counting). I'm not sure if it's down to the sheer number of stars, or the very faint nebulosity that seems to be everywhere, but I've found the background to be especially difficult on these ones. Getting the Ha and OIII nicely balanced before combining probably has something to do with it. I also tend to do gradient reduction (which seems to affect the OIII a lot more than Ha) on the individual stacks before I combine them, so I wonder if I'd be better just leaving it to later in the process? (which I had to do again anyway, as there was still a noticeable red gradient visible later in the workflow). Something to note, I did go quite heavy on the star reduction. More so than I normally would. I found it wasn't until I upped it significantly, that the nebulosity really started to take centre stage. I like the impact it has made to the image overall, but it made me feel a little dirty at the same time, lol (if that makes any sense). Also, this isn't actually the finished version just yet. I have a bit more work to do on the background and stars (which need their colour toned down in places - probably shouldn't have ran Carboni's 'Increase Star Colour', in hindsight I don't think it needed it). I was literally falling asleep at the monitor last night while attempting to finish it off, and in the end had to admit defeat. So hopefully I can get around to it later tonight. Then the next thing will be the big mosaic of both Eastern & Western Veils. I'm both looking forward to, and dreading it, in equal measures ? As always C&C warmly welcomed!
  9. Hi guys After processing the Eastern & Wastern Veils separately a couple of months back, I've finally got round to doing the mosaic that was always the end goal (hence the framing of each panel). I'm not sure why I waited so long to do it, I think deep-down I was secretly dreading it really, as this is my first mosaic so I wasn't really sure how it would go. So this is just 2 panels, and each one has 5 hrs of Ha (15 x 1200s), with 3 hrs 20 mins of Oiii in one (10 x 1200s) and 3 hrs 40 mins of Oiii (11 x 1200s) in the other. So 17 hrs in total. APP was used for stacking, gradient reduction, and the mosaic creation. PS used for everything else. Ha assigned to Red, Oiii to Blue, and Green was synthesized from one of Carboni's actions. I've tried to push it as far as I dare to, did I over-do it do you think? I've resized it down to 66% to help hide some of the noise, and being a mosaic it's still plenty big. I might even end up bringing it down to 50%, we'll see. C&C welcome as always. I tend to finish my images very late at night, so I can sometimes fall into the trap of not seeing the image as clearly as I should! So feel free to be as harsh as you like ?
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