Delta Optical Light Red Filter #23A 1.25″
Overview
The Delta Optical Light Red Astronomical Filter #23A is a specialized optical accessory designed for observing Solar System objects. This color filter features a standard 1.25″ thread, ensuring compatibility with the vast majority of modern telescopes and eyepieces available on the market.
How It Works
The filter operates on the principle of selective light filtration - it transmits primarily the red portion of the spectrum while suppressing other colors. This property significantly improves the contrast of observed details on planetary surfaces and allows better resolution of fine structures. According to experienced astronomers, the light red filter provides better contrast ratios than standard orange filters, making it an excellent choice for more demanding observers.
Planetary Observation Benefits
This color filter for telescopes is particularly useful for observing a variety of Solar System objects:
- Mars - enhances surface formations and atmospheric phenomena, reveals dust storms and polar ice caps more clearly
- Jupiter - helps distinguish cloud belts and atmospheric storms, improves visibility of the Great Red Spot
- Saturn - improves visibility of atmospheric bands and increases contrast between the planet and its rings
- The Moon - highlights topographic surface features such as craters, ridges, and highland regions
Design and Build Quality
The standard 1.25″ filter diameter allows easy installation into most astronomical eyepieces or dedicated filter holders. The precision-machined optical glass and high-quality anti-reflection coatings guarantee long service life and reliable performance under all observing conditions. The filter is supplied in a protective case that shields the optical surfaces from dust and mechanical damage.
Specifications
| Parameter |
Value |
| Brand |
Delta Optical |
| Filter designation |
#23A Light Red |
| Thread diameter |
1.25″ |
| Filter type |
Color / Planetary |
| Recommended objects |
Mars, Jupiter, Saturn, Moon |
| Transmission |
Red spectrum (approx. 25%) |
| Included |
Protective storage case |
About Delta Optical
Delta Optical is a well-established brand specializing in the production of high-quality astronomical accessories and components. The company was founded by astronomers for astronomers, with the goal of providing reliable and affordable optical components for exploring the universe. Delta Optical focuses on superior build quality and precise optical characteristics across all of its products. Their wide range includes filters, eyepieces, finderscopes, and other astronomical accessories that meet the requirements of both beginner enthusiasts and experienced observers. The brand's philosophy is that high-quality astronomical equipment should be accessible to everyone who is interested in exploring the universe and planetary objects.
Who Is This Filter For?
The Delta Optical #23A Light Red Filter is an ideal choice for:
- Amateur astronomers looking to improve planetary contrast
- Observers who have already used orange filters and want better results
- Anyone interested in detailed observation of Mars surface features
- Telescope owners with standard 1.25″ eyepiece fittings
