telescopecomparison · 2-way
Astro-Physics 130mm f/6.3 StarFire GTX vs Astro-Tech AT130EDT
Astro-Physics
130mm f/6.3 StarFire GTX
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Astro-Tech
AT130EDT
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
-10% focal length
Faster by 0.7 f-stops
Specifications
| Specification | Astro-Physics 130mm f/6.3 StarFire GTX | Astro-Tech AT130EDT |
|---|---|---|
| Optics | ||
| Type | refractor | refractor |
| Optical design | Apo triplet | Apo triplet FPL-53 |
| Aperture | 130mm | 130mm |
| Focal length | 819mm | 910mm |
| Native f/ratio | f/6.3 | f/7.0 |
| Image circle | — | 52mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 8.2kg | 7.7kg |
Advantages of Astro-Physics 130mm f/6.3 StarFire GTX
- Faster optics at f/6.3 vs f/7
Advantages of Astro-Tech AT130EDT
- Tighter framing — 910mm vs 819mm focal length
- Larger image circle (52mm) — supports bigger sensors
Best for — Astro-Physics 130mm f/6.3 StarFire GTX
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Best for — Astro-Tech AT130EDT
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Astro-Physics 130mm f/6.3 StarFire GTX — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.52° × 1.68°Scale: 0.95"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.64° × 1.10°Scale: 0.95"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.79° × 0.79°Scale: 0.95"/px
Astro-Tech AT130EDT — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.27° × 1.51°Scale: 0.85"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.48° × 0.99°Scale: 0.85"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.71° × 0.71°Scale: 0.85"/px
Astro-Physics 130mm f/6.3 StarFire GTX — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Astro-Tech AT130EDT — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
