telescopecomparison · 2-way
Askar 130PHQ vs Vixen SD115S
Askar
130PHQ
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Vixen
SD115S
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Key differences
+12% focal length
+13% aperture
Specifications
| Specification | Askar 130PHQ | Vixen SD115S |
|---|---|---|
| Optics | ||
| Type | refractor | refractor |
| Optical design | Petzval quintuplet FPL-51 | Apo doublet SD |
| Aperture | 130mm | 115mm |
| Focal length | 1000mm | 890mm |
| Native f/ratio | f/7.7 | f/7.7 |
| Image circle | 60mm | 44mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 10.2kg | 4.8kg |
Advantages of Askar 130PHQ
- Tighter framing — 1000mm vs 890mm focal length
- 13% more light-gathering aperture
- Larger image circle (60mm) — supports bigger sensors
Advantages of Vixen SD115S
- Wider field — 890mm vs 1000mm focal length
- Lighter (4.8kg vs 10.2kg) — easier to travel with
Best for — Askar 130PHQ
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Best for — Vixen SD115S
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Askar 130PHQ — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.06° × 1.38°Scale: 0.78"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.35° × 0.90°Scale: 0.78"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.65° × 0.65°Scale: 0.78"/px
Vixen SD115S — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.32° × 1.55°Scale: 0.87"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.51° × 1.01°Scale: 0.87"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.73° × 0.73°Scale: 0.87"/px
Askar 130PHQ — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Vixen SD115S — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.