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RedCat 51 MK2.5
RedCat 51 MK2.5
RedCat 51 MK2.5
RedCat 51 MK2.5
SKU: L-RC51II-U

RedCat 51 MK2.5

Discontinued
Manual
Lens Type
4-Element Petzval
Focal Length
250 mm
Diameter
51 mm
Focal Ratio
f/4.9
Image Circle
43 mm
Focuser
Helical Focuser
Adapter Included
Tilt Adjuster Rotator M54 → M48 Adapter
Optional Flattener
No Flattener Required
T-Mount Support
Canon EF, RF Nikon F, Z Sony E Pentax K MFT (M4/3) FUJI X
Camera Format
Full Frame APS-C M4/3
Dovetail Type
Vixen ↔︎ Arca-Swiss
Tube Length
228 mm - 291 mm
OTA Weight
1.3 kg / 2.87 lbs
Total Weight
1.76 kg / 3.88 lbs
RedCat 51 MK2.5
RedCat 51 MK2.5 Sale price$865.00 USD Tax excluded.
RC51 - A region of Vela - Jason Kruger

A region of Vela

Jason Kruger

RC51 - Eagle - Mehmet Ergün

Eagle Nebula, Omega Nebula, large Sagittarius cloud

Mehmet Ergün

RC51 - IC4592 - Neil Jenkins

The Blue Horsehead Nebula - IC4592

Dr. Neil Jenkins

RC51 - M20 - Mehmet Ergün

M20 & M8 Wide Field

Mehmet Ergün

RC51 - NGC 6188 - Jason Kruger

The Fighting Dragons Of Ara / NGC 6188

Jason Kruger

RC51 - Rho - Mehmet Ergün

Rho ophiuchi and Antares region

Mehmet Ergün

RC51 - Sh2-129 - Simone Curzi

Flying Bat & Squid Nebula

Simone Curzi

RC51 - Vela - Rod Prazeres

Vela Supernova Remnant

Rod Prazeres

RC51 - Sh2-140 - LittleGhost

Sh2-140 Region in HaRGB

LittleGhost

Expert Review

William Optics RedCat 51 Review

William Optics is a company known for creating high-performance apochromatic refractors and constantly updating and refining their designs. The RedCat 51 Petzval APO is the latest creation from the company that can’t sit still, and it is bound to shake up the industry once more.

Trevor Jones