Astromania 2" SCT 90-Degree Mirror Diagonal with 93% reflectivity Across Visible Spectrum - Bundle with - 2" Helical Micro Focuser with M48-thread and 0.1mm Scale for Telescope
2-Inch helical focuser designed specifically for astrophotography; fits onto any 2-inch focuser
Approximately 0.1mm focusing precision with 39mm of travel; improves focusing precision; The accessory side of the focuser has a M48 thread for connecting your camera
Suitable for both refractors and Newtonian telescopes; but is also particularly useful with Schmidt Cassegrain telescopes; The rotating mechanism allows very smooth and continuous focusing; and without any play
It fits all rear cells of Schmidt Cassegrain telescopes and includes an adapter to use with refractor telescopes; The 2 inch SCT diagonal features dielectric coatings with 93% percent reflectivity across the visible spectrum and a 1/10 wave mirror for bright and true images
Allows you to take advantage of the wider field of view provided by two inch eyepieces; Dielectric coatings are more durable than regular or enhanced aluminum coatings so you will enjoy years of excellent performance from this product