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The veil Nebula, one of my favorites! I've previously captures this one, but felt i had a lot to improve.
This is another attempt on capturing it and consist of a good mix of data captured over several nights. Finally i feel like i'm starting to get somewhere with this target!
It's all captured with the QHY5L-II-M camera, unguided with a 50mm F/1.8 and a 135mm F/3.5 lens. Both are old manual Olympus OM lenses.
10x 10 min OIII - 50mm F/1.8 (edit: F/2.8, not 1.8)
15x 10 min Ha - 50mm F/1.8 (edit: F/2.8, not 1.8)
4-part mosaic, total 254x 2 min Ha - 135mm F/3.5
Total exposure is 12 hours 38 minutes. Mainly it's Ha exposure though, and i'm looking forward to capturing more OIII as well at a longer focal length - but for now i'm really happy with the result!
38x3min Subs with standard Canon EOS 5D Mk2 and TAK 85FSQ; would of liked more data but the moon and clouds came out.
How's going people?
Long time since last post due to bright Swedish summer nights, gear-tuning and automation fiddling, but now I'm up & running again.
I'm starting off the dark season with one of my favorite targets inside the cygnus loop, NGC 6992, east veil nebula.
The subs where acquired during three moonlit nights, all subs unguided.
(shooting other targets too, so subs are shot when the target is in the highest position in the sky, thanks to ACP automation)
I've only used two filters for this image, Ha & O3 (both 5nm). I mixed the color close to Ha/O3/O3 as R/G/B , with slight different weights in G & B, to reach a more blue tone rather than cyan. Both Ha & O3 was used as luminance-data.
I also created a "natural" star-color mix of the layers, with Ha / Ha+O3 / O3 as R/G/B and adjusted filterweights until I had a natural mix of yellow & blue (go Sweden!) stars, which was later applied as color-data with a star-mask on top of the image.
The Subs (unguided):
Ha : 19 x 600s / 190 minutes
O3 : 12 x 600s / 120 minutes
Total time: 310 minutes / 5.2 hours
Orion Optics AG12
Focal lenght: 1140mm
Focal ratio: f/3.8
Imaging scale: 0.98" / pixel together with my QSI 583
10 Micron GM 2000 HPS
All subs unguided
QSI 583 wsg (with 8-position filterwheel upgrade)
Click image for full resolution:
It's been so much fun to see this object in the high resolution my setup produces, so many faint formations of nebulosity I've never seen before.
I also recommend to have a peek at the following link, it's crazy how different the same object can look, imaged through different wavelengths:
Click here to see the difference between the Ha & O3 at my homepage, with a "mouse-over" function that switches between the two
Thanks a lot for watching