Description
Night Sky 50mm Solar Filter is a compact objective solar filter designed to make solar observation safer and easier for amateur astronomers. Installed on the front of a compatible telescope, this filter blocks the overwhelming intensity of sunlight before it enters the optical system, allowing you to safely observe the Sun’s visible surface features.
Unlike dangerous eyepiece-mounted solar filters, front-mounted solar filters provide a safer approach because they reduce solar energy before it reaches the telescope’s internal optics and eyepiece. The Night Sky 50mm Solar Filter is designed with a cap-style mounting system that fits telescopes or optical instruments with a matching 50 mm objective diameter.
With this filter installed, amateur astronomers can explore the Sun in white light, including visible sunspots and changes on the solar photosphere. It is also suitable for basic solar photography when used with compatible telescopes and cameras.
Its compact size, simple installation, and affordable design make it an excellent accessory for beginners, educational astronomy programs, and anyone interested in observing solar activity safely.
Important Safety Note:
Always check that the filter is securely attached before pointing the telescope at the Sun. Never use a damaged solar filter. Never observe the Sun through an unfiltered telescope, binoculars, or camera lens, as concentrated sunlight can cause serious eye damage.
Night Sky 50mm Solar Filter for Telescope Key Features
- Safe White-Light Solar Observation – Designed for observing the Sun safely through compatible telescopes when properly installed.
- Front-Mounted Objective Filter Design – Attaches to the telescope’s front aperture, blocking intense sunlight before it enters the optical system.
- 50mm Mounting Size – Suitable for telescopes and optical instruments with a compatible 50mm objective opening.
- High-Density Solar Filter Material – Reduces sunlight intensity to a safe level for visual solar observation and solar imaging.
- Detailed Solar Views – Allows observation of sunspots, the photosphere, and other white-light solar features with suitable telescopes.
- Compatible with Small Telescopes & Optical Instruments – Suitable for many small refractors, reflectors, spotting scopes, and camera lenses with matching dimensions.
- Lightweight Protective Cell Design – The filter element is securely mounted inside a durable frame for convenient use.
- Easy Installation – Simple cap-style design allows quick attachment and removal.
- Compact and Portable – Ideal for beginners, students, and amateur astronomers interested in solar observation.
| Specification | Details |
|---|---|
| Brand | Night Sky |
| Product Type | Objective Solar Filter |
| Filter Diameter / Mounting Size | 50 mm |
| Design | Front-mounted cap style |
| Application | Solar observation and solar imaging |
| Compatible Instruments | Telescopes and optical devices with matching 50mm objective size |
| Filter Type | White-light solar filter |
| Model | 70076 etc. |
| Material | Optical solar filter material with protective cell |
| Usage | Amateur astronomy, education, solar observation |









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