![[Refurbished] RedCat 51 MK2.5](http://williamoptics.com/cdn/shop/files/Redcat-51-IIU-pers-1.jpg?v=1731395719&width=2400)
![[Refurbished] RedCat 51 MK2.5](http://williamoptics.com/cdn/shop/files/Redcat-51-IIU-pers-3.jpg?v=1731395731&width=2400)
![[Refurbished] RedCat 51 MK2.5](http://williamoptics.com/cdn/shop/files/Redcat-51-IIU-pers-2.jpg?v=1731395724&width=2400)
![[Refurbished] RedCat 51 MK2.5](http://williamoptics.com/cdn/shop/files/Redcat-51-IIU-side-1.jpg?v=1731395706&width=2400)
![[Refurbished] RedCat 51 MK2.5](http://williamoptics.com/cdn/shop/files/Redcat-51-IIU-side-2.jpg?v=1731395711&width=2400)
- Lens Type
- 4 Elements Petzval Design
- Focal Length
- 250 公釐
- Diameter
- 51 公釐
- Focal Ratio
- f/4.9
- Image circle
- 43 公釐
- Focuser
- Helical Focuser
- Adapter Included
- Tilt Adjuster Rotator M54 → M48 Adapter
- Optional Flattener
- No Flattener Required
- Camera Format
- Full Frame APS-C M4/3
- Tube Length
- 291 公釐 - 228 公釐
- OTA Weight
- 1.3 公斤 / 2.87 lbs
- Total Weight
- 1.76 公斤 / 3.88 lbs
選擇選項
![[Refurbished] RedCat 51 MK2.5](http://williamoptics.com/cdn/shop/files/Redcat-51-IIU-pers-1.jpg?v=1731395719&width=2400)
![[Refurbished] RedCat 51 MK2.5](http://williamoptics.com/cdn/shop/files/Redcat-51-IIU-pers-3.jpg?v=1731395731&width=2400)
![[Refurbished] RedCat 51 MK2.5](http://williamoptics.com/cdn/shop/files/Redcat-51-IIU-pers-2.jpg?v=1731395724&width=2400)
![[Refurbished] RedCat 51 MK2.5](http://williamoptics.com/cdn/shop/files/Redcat-51-IIU-side-1.jpg?v=1731395706&width=2400)
![[Refurbished] RedCat 51 MK2.5](http://williamoptics.com/cdn/shop/files/Redcat-51-IIU-side-2.jpg?v=1731395711&width=2400)
[Refurbished] RedCat 51 MK2.5
促銷價$598.00 USD
Tax Excluded
原價$865.00 USD