telescopecomparison · 2-way
TEC APO140FL f/9.6 vs Celestron C6 SCT
TEC
APO140FL f/9.6
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
-10% focal length
-7% aperture
Faster by 0.4 f-stops
Specifications
| Specification | TEC APO140FL f/9.6 | Celestron C6 SCT |
|---|---|---|
| Optics | ||
| Type | refractor | sct |
| Optical design | Apo triplet fluorite | Schmidt-Cassegrain |
| Aperture | 140mm | 150mm |
| Focal length | 1345mm | 1500mm |
| Native f/ratio | f/9.6 | f/10.0 |
| Image circle | — | — |
| Full-frame support | No | No |
| Physical | ||
| Weight | 7.7kg | 4.5kg |
Advantages of TEC APO140FL f/9.6
- Wider field — 1345mm vs 1500mm focal length
- Faster optics at f/9.6 vs f/10
Advantages of Celestron C6 SCT
- Tighter framing — 1500mm vs 1345mm focal length
- Lighter (4.5kg vs 7.7kg) — easier to travel with
Best for — TEC APO140FL f/9.6
- Small galaxies, planetary nebulae, lunar & planetary detail
- High-resolution long-exposure work
Best for — Celestron C6 SCT
- Small galaxies, planetary nebulae, lunar & planetary detail
- High-resolution long-exposure work
TEC APO140FL f/9.6 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 1.53° × 1.02°Scale: 0.58"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.00° × 0.67°Scale: 0.58"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.48° × 0.48°Scale: 0.58"/px
Celestron C6 SCT — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 1.38° × 0.92°Scale: 0.52"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 0.90° × 0.60°Scale: 0.52"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.43° × 0.43°Scale: 0.52"/px
TEC APO140FL f/9.6 — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Celestron C6 SCT — recommended user
Best suited for experienced imagers chasing detail running a portable travel rig.
