The Sun, December 01, 2021, 10:48
Equipment:
-Coronado PST H-alpha 40 mm telescope
-Sky-Watcher AZ-GTi mount
-Deepsky IR-cut filter
-QHY5III178m camera.
Stacking with Autostakkert (100 frames from 3008), wavelets and deconvolution with AstroSurface.
Location: Russia, Anapa, backyard.
The Moon, November 27, 2021, 01:28
Equipment:
-Meade 70mm Astrograph Quadruplet APO Refractor
-Sky-Watcher AZ-GTi mount
-Barlow lens NPZ 2x
-ZWO IR-cut filter
-camera ZWO ASI 183MC
Processing: Autostakkert (100 frames), AstroSurface. Scale 50%.
Location: Russia, Anapa, backyard.
Svbony provided Svbony SV503 80ED F7 Doublet Refractor for my review. This is a small 80mm refractor with a doublet lens, one of which is made of S-FPL51 glass. The use of ED glass provides a significant reduction in color halo (longitudinal chromatic aberration) around bright objects compared to a classic achromatic refractor with the same focal length. Also for review, I received a native Svbony SV193 0.8x field-flattener reducer for this specific refractor.
Declared specifications:
| Model | SV503 |
| Aperture of objective lens | 80mm |
| Focal length | 560 mm |
| Focal ratio | F7 |
| ED Glass | S-FPL51 |
| Lens Coated | Ultra-wideband coating（SMC） |
| Objective Lens type | Double separation lens structure |
| Limit magnitude | 11.6 |
| Light-gathering Power | 130.6x |
| Resolution | 1.5 Arcseconds |
| Tube Material | Aluminum |
| Focuser | 2 inch Dual speed focuser |
| Reduction ratio | 1:10 |
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