Check out the corners at 100% and decide if you can live with them at f/1.4...
Sigma Art 105mm f/1.4 working at f/1.4
- 150 x 15 seconds (37.5 minutes total exposure)
- ISO 100
- Mag 18 skies
- Mount: Unguided iOptron CEMP25P
- ASCOM Dither every 10 frames via BackYardEOS
- Canon 6D (stock, unmodified)
- Sensor: 35.8mm x 23.9mm, 5472 x 3648 pixels, each 6.5 microns
- Overlay: Nikon APS-C (because Nikon at 1.5 is a wider FOV than Canon's 1.6x crop factor)
Field of View and Image Scale
- Canon 6D: 19.90 x 13.35 degrees, Image scale: 13.1454"/px
- Nikon D5300: 13.12 x 8.77 degrees, Image scale: 7.90932"/px
- 151 Raw light files calibrated with 64 flats and 64 bias
- Use Camera WB
- No Cosmetic repairs
- Kappa-Sigma Average combine (2.50/5)
- Adaptive Heterogeneity-Directed (AHD) Interpolation
- Per Channel Background Calibration
- RGB Channels Align
- 2x Drizzle then downsample back to original size
- Assign sRGB color space
- Non-linear curve
- Sky background neutralized
- Sky background flattened with GradientExTerminator
- Levels stretch
- Star colors enhanced
- Black point adjusted
- No lens correction profiles used at all
What do y'all think?
Pretty good right?
Edited by Jerry Lodriguss, 15 August 2019 - 03:09 AM.