saxon 1.25" Colour Planetary Filter No. 23A (1.25 inch)

saxon #23A Light Red allows 25 percent transmission of visible light, this filter is great in getting a vivid image of the Maria on Mars, also a better view of Jupiter’s belts and polar areas and a ehanced view of the polar areas and rings of Saturn.

In the field of astronomy, photography, and optics, optical filters are labeled and categorized using the Wratten System. This system provides a specific code comprising of a number followed by a letter for a specific filter.

The number in the code refers to the filter’s color but is assigned in a random pattern compared to a box of Crayola Crayons. Meanwhile, the letters correspond to color strength which typically increases as the letter increases. The higher the strength the more light that is filtered.

Frederick Wratten and his partner Mees sold their Wratten filters to Eastman Kodak in 1912. These filters are typically used by all amateurs in the field of observational astronomy. However, if you will be doing Digital imaging, you need to use an interference filter.

With the evolution of technology, digital photography came into existence. The adjustments for the color and temperature of the image can already be done using software incorporated inside the software. This innovation slowly removes the application of these filters in traditional photography, but astrophotography is a whole other story.

How to Install the Filter?

Telescope filters can be stacked together when used simultaneously. To install it, you need to first remove the eyepiece of your telescope.

Then, at the bottom of the barrel of your eyepiece, thread the filter to fit inside. Next, place the eyepiece back in the scope and now you’re ready to view.