NGC 7000
Photo description / processing
First test run with the Samyang 135. There's a clear tilt issue—either the belt is too tight or there's some misalignment somewhere. I'll figure it out; I don't think it's anything critical. I covered the lens hood to prevent any flare for sure, installed step-down rings from 77mm to 55mm, and left the aperture wide open at f/2 to avoid diffraction spikes. Overall, there's something to work with.
Technical information
- Telescope/Lens
- Samyang 135mm f/2 ED UMC
- Camera
- ZWO ASI533MC Pro
- Mount
- JUWEI 14
- Guide Scope
- Askar 32 f4
- Guide Camera
- ZWO ASI120MM Mini
- Accessories
- EAF, EFW MINI, ASIAIR MINI, Dounstep Rings, Printed Rings
- Software
- Siril, Lightroom
- Location
- Самара, Россия
Light pollution
Orange, Bortle 6 zone
- Date taken
Exposure
- 12 × 300″ · ISO/Gain: 100 · Optolong L-eXtreme ·
Total exposure: 1 h 0 m
Photo versions
Current photo
NGC 7000Apr 15th, 2026
1 h 0 m
First test run with the Samyang 135. There's a clear tilt issue—either the belt is too tight or there's some misalignment somewhere. I'll figure it out; I don't think it's anything critical. I covered the lens hood to prevent any flare for sure, installed step-down rings from 77mm to 55mm, and left the aperture wide open at f/2 to avoid diffraction spikes. Overall, there's something to work with.
Show changes
Comments
And you can stop down the aperture with rings on the front, which improves the image and avoids diffraction spikes. Just place the ring as close to the lens as possible, though you lose the main advantage of this little lens. The SV535 105/2.8 is more interesting in this regard, but its back focus is too short. There's no perfect option in our line of work...
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