Kowa
Kowa TSN-99A Prominar
$3750
2 sellers$3750–$4499read
Best Spotting Scopes · head-to-head
Kowa TSN-99A Prominar vs Celestron Regal M2 20-60x80 ED
A sourced, side-by-side comparison. Celestron Regal M2 20-60x80 ED is cheaper at $879.95. Every spec and price links to its source.
Celestron
Celestron Regal M2 20-60x80 ED
$879.95Cheaper
Which is better: the Kowa TSN-99A Prominar or Celestron Regal M2 20-60x80 ED?
On the specs we track, they're closely matched. The Celestron Regal M2 20-60x80 ED is the cheaper at $879.95.
As an Amazon Associate we earn from qualifying purchases. Prices verified at capture; live price may differ.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec |  Kowa TSN-99A Prominar |  Celestron Regal M2 20-60x80 ED |
|---|---|---|
| US price | $3750 | $879.95 |
| Brand | Kowa | Celestron |
| Released | — | — |
| Objective lens (mm) | 99 | 80 |
| Magnification range | 30-70x | 20-60x |
| Glass type | fluorite | ED |
| Viewing angle | angled | angled |
| Field of view ft1000yd | 105 | 110 |
| Close focus (ft) | — | 21.3 |
| Eye relief (mm) | 17 | 20 |
| Waterproof | Yes | Yes |
| Nitrogen purged | Yes | Yes |
| Length (in) | — | 16.7 |
| Weight (oz) | — | 55.5 |
Sources — Kowa TSN-99A Prominar: kowaoptics.com (verified 2026-10-20). Celestron Regal M2 20-60x80 ED: celestron.com (verified 2026-07-11).
What's the difference between the Kowa TSN-99A Prominar and Celestron Regal M2 20-60x80 ED?
Where the two actually differ on the specs we track (5 of 11). Matching specs are omitted.
- Objective lens (mm): Kowa TSN-99A Prominar 99 vs Celestron Regal M2 20-60x80 ED 80
- Magnification range: Kowa TSN-99A Prominar 30-70x vs Celestron Regal M2 20-60x80 ED 20-60x
- Glass type: Kowa TSN-99A Prominar fluorite vs Celestron Regal M2 20-60x80 ED ED
- Field of view ft1000yd: Kowa TSN-99A Prominar 105 vs Celestron Regal M2 20-60x80 ED 110
- Eye relief (mm): Kowa TSN-99A Prominar 17 vs Celestron Regal M2 20-60x80 ED 20