What is the primary use for Baader Turbo Film?
Baader Turbo Film is designed to serve as an optically perfect protective window for telescope tubes. Its main applications are to seal open-tube designs (like Dobsonians and truss-tube SCTs) to prevent dust, moisture, and dew from reaching the primary optics, and to significantly reduce internal tube currents that can degrade image quality.
Is Baader Turbo Film the same as AstroSolar film for sun viewing?
Absolutely not. While it shares a similar base material, Baader Turbo Film is not coated for safe solar observation and must never be used for viewing the Sun. It has a neutral density of 0.1, which is thousands of times less dense than the ND 5.0 required for safe solar filters. Using this film to look at the Sun will cause immediate and permanent eye damage.
Can I use Baader Turbo Film on my large Dobsonian to reduce tube currents?
Yes, this is an ideal application. By stretching the Baader Turbo Film over a custom-made frame at the top of your Dobsonian's tube or truss assembly, you can effectively stop internal air from mixing with the ambient air. This stabilizes the image and often results in sharper, more detailed views, especially during planetary observation where stable "seeing" is critical.
How does the 1/10 wave quality of Baader Turbo Film benefit my telescope?
A 1/10 wave figure means the surface is exceptionally flat and uniform, introducing no discernible distortion to the light passing through it. For a telescope, this means the film acts as a truly transparent window, preserving the original quality of your primary mirror or lens without adding aberrations, reducing sharpness, or affecting contrast.
Will installing Baader Turbo Film on my truss-tube RC telescope affect collimation or image quality?
No. When properly mounted without wrinkles, the Baader Turbo Film is so optically flat and free of wedge error that it will not alter the optical path or affect collimation. Its purpose is to seal the tube from the environment—reducing boundary layer issues and keeping optics clean—without any negative impact on the high-resolution images these systems are designed to produce.
What makes Baader Turbo Film different from standard Mylar?
Baader Turbo Film is a highly specialized monomer film that undergoes a proprietary annealing process to achieve optical homogeneity. Standard Mylar is a polymer film that lacks this level of precision and often suffers from internal stresses, thickness variations, and wedge error that will visibly degrade a telescope's image quality. Turbo Film is a true optical component, whereas Mylar is an industrial material.
