The #23 Red Filter is ideal for increasing contrast on planets such as Jupiter and Saturn, especially useful for observing the polar regions and cloud bands. It’s also excellent for enhancing detail on Mars—cutting through blue and green light to emphasize surface features and polar caps.

Made from premium optical glass, this 1.25″ filter is housed in a durable aluminum cell with standard threading—compatible with most 1.25″ telescope eyepieces.

• Size: 1.25″

• Filter #: #23 Red

• Use: Planetary observation – Mars, Jupiter, Saturn

• Enhances: Surface detail, polar caps, cloud bands

• Compatible with: Most 1.25″ threaded telescope eyepieces