William Optics RedCat 91 WFID APO Petzval OTA

William Optics RedCat 91 WFID APO Petzval OTAStep up your astrophotography game with the William Optics RedCat 91, an advanced apochromatic refractor tailored for full frame and medium format cameras. This latest addition to the RedCat series combines portability with superior optical performance, making it a versatile tool for capturing breathtaking detail in deep sky objects. Petzval Design, No Backfocus Hassles: The 5 element Petzval design eliminates the need for backfocus adjustments,

easy to use electronics polar scope (e-PS)

This slot gives you an easy way to corral essential cables (like the ones for our Dew Heater rings) without potentially allowing light pollution to leak in

Whether you’re a beginner eager to explore the night sky or an experienced astronomer looking for a compact companion

Paracorr Type-2 for 2" Focusers

resulting in only a doubling of the signal-to-noise ratio

user-friendly interface

The ASI220MM Mini can be regarded as an upgraded version of the ASI290MM Mini

91") Focal Length: 750mm (30") Focal Ratio: f/5 Focal Length of Eyepiece 1: 25mm (0

25″ T-adapter fits on any telescope that uses a 1

It can be directly used for solar Photosphere imaging

such as oiling the bearings

(Note: the ring’s integrated thermistor is only compatible with the Celestron Smart DewHeater Controllers)