![[Refurbished] RedCat 51 MK1.5](http://williamoptics.com/cdn/shop/files/Redcat-51-IX-pers-1.jpg?v=1726218731&width=2400)
![[Refurbished] RedCat 51 MK1.5](http://williamoptics.com/cdn/shop/files/Redcat-51-IX-pers-3.jpg?v=1726465600&width=2400)
![[Refurbished] RedCat 51 MK1.5](http://williamoptics.com/cdn/shop/files/Redcat-51-IX-pers-2.jpg?v=1726218731&width=2400)
![[Refurbished] RedCat 51 MK1.5](http://williamoptics.com/cdn/shop/files/Redcat-51-IX-side-m.gif?v=1726218732&width=2400)
[Refurbished] RedCat 51 MK1.5
Overview
- Soft carry case included.
- One-year warranty
- 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
- Camera Format
- > Full Frame
- Tube Length
- 291 mm - 228 mm
- OTA Weight
- 1.3 kg / 2.87 lbs
- Total Weight
- 1.76 kg / 3.88 lbs
Choose options
![[Refurbished] RedCat 51 MK1.5](http://williamoptics.com/cdn/shop/files/Redcat-51-IX-pers-1.jpg?v=1726218731&width=2400)
![[Refurbished] RedCat 51 MK1.5](http://williamoptics.com/cdn/shop/files/Redcat-51-IX-pers-3.jpg?v=1726465600&width=2400)
![[Refurbished] RedCat 51 MK1.5](http://williamoptics.com/cdn/shop/files/Redcat-51-IX-pers-2.jpg?v=1726218731&width=2400)
![[Refurbished] RedCat 51 MK1.5](http://williamoptics.com/cdn/shop/files/Redcat-51-IX-side-m.gif?v=1726218732&width=2400)
[Refurbished] RedCat 51 MK1.5
Sale price$499.00 USD
Regular price$798.00 USD