telescopecomparison · 2-way
Celestron RASA 6 vs Takahashi Epsilon-130D
Takahashi
Epsilon-130D
Best suited for beginners and wide-field enthusiasts running a backyard imaging setup.
Key differences
-22% focal length
+17% aperture
Faster by 1.1 f-stops
Specifications
| Specification | Celestron RASA 6 | Takahashi Epsilon-130D |
|---|---|---|
| Optics | ||
| Type | astrograph | astrograph |
| Optical design | Rowe-Ackermann Schmidt Astrograph | Hyperbolic Newtonian |
| Aperture | 152mm | 130mm |
| Focal length | 335mm | 430mm |
| Native f/ratio | f/2.2 | f/3.3 |
| Image circle | 16mm | 44mm |
| Full-frame support | No | Yes |
| Physical | ||
| Weight | 3.8kg | 7.8kg |
Advantages of Celestron RASA 6
- Wider field — 335mm vs 430mm focal length
- 17% more light-gathering aperture
- Faster optics at f/2.2 vs f/3.3
- Lighter (3.8kg vs 7.8kg) — easier to travel with
Advantages of Takahashi Epsilon-130D
- Tighter framing — 430mm vs 335mm focal length
- Larger image circle (44mm) — supports bigger sensors
Best for — Celestron RASA 6
- Wide-field nebulae and Milky Way regions
- Fast imaging — short exposures per sub
Best for — Takahashi Epsilon-130D
- Large emission nebulae and star clusters
- Fast imaging — short exposures per sub
- Full-frame astro cameras and DSLRs
Celestron RASA 6 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 6.16° × 4.11°Scale: 2.32"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 4.02° × 2.69°Scale: 2.32"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.93° × 1.93°Scale: 2.32"/px
Takahashi Epsilon-130D — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 4.80° × 3.20°Scale: 1.80"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 3.13° × 2.09°Scale: 1.80"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.51° × 1.51°Scale: 1.80"/px
Celestron RASA 6 — recommended user
Best suited for beginners and wide-field enthusiasts running a portable travel rig.
Takahashi Epsilon-130D — recommended user
Best suited for beginners and wide-field enthusiasts running a backyard imaging setup.
