Schmidt Cassegrain Telescope (SCT) Modification

Here we show step by step how to make 5 upgrades to a Celestron C11 SCT optical tube which include:
1. Adding nylon screws to the baffle tubes to try and reduce mirror shift
2. Adding internal fans with deflection plates to create a laminar flow acros the face of the primary mirror
3. Adding a temperature sensor to the backside of the mirror
4. Replacing the stock grease with a much better high temp low vapor pressure grease
5. Flocking the inside of the optical tube


At the end of the video we discuss the performance of each improvement after a year of testing and share Dave's latest astro-image of the Orion Nebula taken with the improved telescope

This is the companion video to two videos posted previously:
1. Celestron 11" SCT Tear Down video    • Celestron C11 SCT Disassembly  

2. Celestron Motorized Focuser    • Celestron Motorized Focuser Problems ...  

For more astronomy content like this and astro equipment reviews you might want to visit my web site https://www.californiaskys.com/

The following links to my favorite astronomy equipment suppliers are affiliate links which allow me to earn a commission on purchases with no cost to you. If you would like to support my channel and its content please consider using my links when ordering your astronomy equipment especially if you were inspired by my video.

High Point Scientific https://bit.ly/3YvqU4X
Agena Astro https://bit.ly/434LUSu

Here are links to some of the items shown in the video. Some are affiliate links which can earn a commission at no cost to you and help to support this channel.

1. Noctua Cooling Fans: https://amzn.to/3HP5cDv
2. Krytox LVP Lubricant: https://www.zoro.com/krytox-vacuum-gr...
3. Panel Connector: https://amzn.to/3VgrP6I
4. Right Angle 5.5 x 2.1mm Power Cord: https://amzn.to/3YJZ0Ts
5. Yocto Environmental Sensor: https://www.yoctopuce.com/EN/products...
6. Mini USB Panel Mount: https://amzn.to/3WBF2IE
7. ASTROMI.CH Weather Station: https://www.astromi.ch/product/mbox/
8. Protostar Flocking Material: https://www.fpi-protostar.com/hitack.htm