telescope
TEC
APO140FL f/9.6
140mm Apo triplet fluorite · 1345mm f/9.6
Long focal length variant; narrower field. Image circle and full-frame coverage not published.
Best for
- Small galaxies, planetary nebulae, lunar & planetary detail
- High-resolution long-exposure work
Specifications
| Optics | |
| Type | refractor |
| Optical design | Apo triplet fluorite |
| Aperture | 140mm |
| Focal length | 1345mm |
| Native f/ratio | f/9.6 |
| Image circle | — |
| Full-frame support | No |
| Physical | |
| Weight | 7.7kg |
Typical FOV & image 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
Typical targets
- M38 — Starfish ClusterOpen Cluster · 21′Plan this target
- IC 342 — Hidden GalaxyGalaxy · 21′Plan this target
- M93 — Open Cluster M93Open Cluster · 22′Plan this target
- M110 — Andromeda Satellite M110Galaxy · 22′Plan this target
- NGC 300 — Sculptor Group GalaxyGalaxy · 22′Plan this target
- NGC 2403 — Caldwell 7Galaxy · 22′Plan this target
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Source: telescopengineering.com