12.08.2020, 02:32 UT
ZWO ASI 290MM + C14 Edge HD
+ 2x Baader VIP Barlow
+ Baader IR filter (685 nm)
Firecapture for SER file recording
Seeing: 6/10
Transparency: 3/5
Post-Processing:
------------------------
Autostakkert!3: 400 / 5000 frames stacked
Registax 6: histogram correction, wavelet sharpening
Adobe Photoshop CS2: image crop, level correction,
unsharp mask
Topaz Denoise: Noise reduction
Location: Schwentinental OT Raisdorf
© All Rights Reserved
Ha: 16.07.2021, 23:45 - 00:52 UT
OIII: 17.07.2021, 23:43 - 00:32 UT
ZWO ASI 183 MM Pro @ -15°C (Gain=139, Offset=21)
+ C14 & Starizona Hyperstar @ 675 mm (f/1.9)
+ Baader 2" Ha, OIII filter
on CGE-Pro mount
Cable managment to mitigate diffraction spikes.
Autoguiding:
Artesky 70 mm Guidscope (f=400 mm)
ZWO ASI 120 MM mini
PhD2 (Multistarguiding)
Dither
light frames:
20 x 120 s (Ha)
15 x 120 s (OIII)
dark frames:
30 x 120 s
acquired with N.I.N.A.
Post-Processing:
PixInsight:
Ha, OIII channel:
Image calibration (dark + bias frames only), star alignment, image integration, Darkarchons EZ Processing Suite: EZ Soft Stretch
HOO combination via channel combination
HOO processing:
dynamic crop, SCNR, luminance mask, contrast/color saturation enhancement of nebula by curves transformation, darkening and desaturation of background by curves transformation, chrominance and luminance noise suppression using Multiscale Linear Transform
Topaz Denoise AI:
Noise suppression
Photoshop CS2:
Final color adjustments
Location: Schwentinental, Germany
© All Rights Reserved
© All Rights Reserved
28.08.2024 (03:34 UT - 03:48 UT)
Celestron C14 Edge HD @ f=8750 mm (F/37), res = 0.07"/px
+ Celestron CGE Pro mount
+ Celestron EF
+ ZWO ASI 290 MM
+ Baader 2x VIP Barlow
+ ZWO EFW
+ Baader IR (685 nm) filter
+ Tempest Cooler
+ Omegon Dew Heater
+ Astrozap Dew Shield for C 14
Very short imaging train: I simply screwed the Baader VIP Barlow into the nose piece of the ZWO EFW. However, the small pixel size of the ZWO ASI 290 MM leads to a pixel scale of 0.07"/px at a reasonable f-ratio of f/37.
IR: 8 x SER movies
5000 frames/movie
5.2 ms exposure time, gain = 268
1x1 bin
recorded with Firecapture
Saturn 45° above the horizon
Seeing: Pickering 4-5 (poor)
Postprocessing
IR
Autostakkert!4beta:
- Stacking 25% of the frames/movie
- Image Stabilization Planet
- Quality Estimator: Laplace, Noise Robust 5, Local
- Reference Frame: Autosize
- Normalize Stack 90%
- Minimum AP size = 104, Min Bright = 45
Registax:
- wavelet sharpening using layer 2, step increment = 1
WinJUPOS:
- image measurement of IR images
- image de-rotation & stacking of all IR images
Lucien Astrosurface 3:
- apply LR deconvolution
Topaz Denoise 6:
- noise reduction
Schwentinental (Germany)
-CS Daniel
Ha: 26.12.2021, 21:47 - 22:57 UT
OIII: 26.12.2021, 20:17 - 21:30 UT
SII: 26./27.12.2021, 23:05 - 00:28 UT
ZWO ASI 1600 MM Pro @ -20°C (Gain=139, Offset=21)
+ C14 & Starizona Hyperstar @ 675 mm (f/1.9)
+ Baader 2" Ha, OIII, SII filter
on CGE-Pro mount
Cable managment to mitigate diffraction spikes.
Autoguiding:
Artesky 70 mm Guidscope (f=400 mm)
ZWO ASI 120 MM mini
PhD2 (Multistarguiding)
Dither
light frames:
25 x 120 s (Ha)
26 x 120 s (OIII)
29 x 120 s (SII)
Unfortunately, I had to throw away a lot of subs due to wind gusts
dark frames:
30 x 120 s
acquired with N.I.N.A.
Post-Processing:
PixInsight:
Processing based on the HSHO workflow by Cuiv, The Lazy Geek
Ha, OIII, SII channel:
Image calibration (dark + bias frames only), star alignment, image integration, dynamic crop, dynamic background extraction according to this video by VisibleDark, Darkarchons EZ Processing Suite: EZ Softstretch
First HSHO combination via LRGBCombination with 58% weight on the green channel, remove magenta tints in the color image by image inversion and SCNR, star extraction using Starnet, delete first HSHO combination result, smooth stars by removing layers 1-2 with MLT
Star removal from non-linear Ha, OIII, SII images, second HSHO combination via LRGBCombination of starless HSO images, remove magenta tints in the color image by image inversion and SCNR
Starless HSHO processing:
curves transformation for contrast enhancement, create luminance mask, HDRMultiscaleTransform with 9 layers, contrast/color saturation/hue, b, a, c, R, G, B, enhancement of nebula by curves transformation
Sharpening of L:
not applied due to noisy image
Topaz Denoise AI:
Remove noise from starless image:
Mode: DeNoiseAI
Low Light Mode On
Sharpen: 0
Remove Noise: 25
Adobe Lightroom 6.14:
Final contrast enhancements, HSL processing of specific colors
PixInsight:
Finally, add stars to starless image using Pixelmath and apply the DarkStructureEnhance script with amount = 0.1
Location: Schwentinental, Germany
© All Rights Reserved