DeltaOptical Violet Filter #47 1.25″
Overview
The DeltaOptical Violet Filter #47 is a specialized color filter designed for observing Solar System objects. Built to fit standard 1.25″ eyepieces, it is an essential accessory for any serious planetary observer. The filter effectively suppresses red, yellow and green wavelengths of light, enabling higher-contrast views of specific atmospheric structures on the planets.
Key Applications
Venus
For Venus observation, this filter is practically irreplaceable. It is one of very few filters capable of revealing the extremely fine and subtle structures in the upper layers of the Venusian atmosphere - details that remain entirely invisible through unfiltered views or with most other filters.
Mars
When observing Mars, the violet filter is particularly effective for studying cloud formations around the polar cap regions. By suppressing unwanted color wavelengths, it allows the observer to distinguish fine details in the Martian atmosphere that would otherwise remain hidden.
Saturn
The filter noticeably improves the visibility of Saturn's ring system, helping to better resolve individual ring bands and divisions such as the Cassini Division. It can also enhance certain atmospheric belt structures on Saturn and other gas giants.
Important Usage Notes
Due to its very dark tint and low light transmission, this filter is recommended primarily for telescopes with a primary mirror or lens aperture greater than 200 mm (8″). With smaller instruments the resulting image may be too dim for comfortable and productive observation.
Specifications
| Parameter |
Value |
| Brand |
DeltaOptical |
| Filter designation |
#47 Violet |
| Eyepiece barrel size |
1.25″ |
| Filter color |
Violet |
| Suppressed wavelengths |
Red, yellow, green |
| Minimum recommended aperture |
200 mm (8″) |
| Primary use |
Planetary observation - Venus, Mars, Saturn |
| Thread standard |
Standard 1.25″ eyepiece filter thread |
Compatibility
The filter is fully compatible with standard 1.25″ eyepieces and can be easily threaded into the filter cell of virtually any standard astronomical eyepiece. Installation is straightforward and requires no tools.
About DeltaOptical
DeltaOptical is a trusted brand in the field of astronomical accessories and optical components. The company specializes in producing high-quality filters, eyepieces and other accessories for astronomers of all experience levels. Every DeltaOptical product is designed by astronomers for astronomers, with an emphasis on practicality, build quality and value. The product range covers everything from basic color filters to advanced optical systems, and each item undergoes careful quality control before leaving the factory.
Why Choose the Violet Filter #47?
- One of the few filters able to reveal cloud detail in Venus's upper atmosphere
- Enhances polar cloud structures on Mars
- Improves contrast and detail in Saturn's ring system
- Standard 1.25″ thread fits the vast majority of astronomical eyepieces
- Manufactured by a specialist astronomical accessories brand with strict quality control
- Ideal upgrade for observers ready to explore fine planetary atmospheric detail
