Finder Scope Skywatcher SW-7115 9x50 with 90° angle attachment, straight eyepiece

Skywatcher SW-7115 9x50 finder scope is an auxiliary optical instrument designed to assist with telescope pointing and target acquisition. With 9× magnification and a 50 mm objective lens, it delivers a bright, wide field of view that simplifies locating celestial objects. The unit is supplied with both a 90° angle attachment and a straight eyepiece configuration, allowing flexible mounting and more comfortable observation positions depending on the main instrument and observer preference.

Advantages

The 9x magnification together with the 50 mm objective provides a balance between enlargement and field of view, making it easier to centre targets quickly. The bright optics improve visibility under moderate light-polluted skies and during twilight. Inclusion of a 90° angle attachment and a straight eyepiece offers ergonomic options for different telescope setups and viewing angles. The finder scope’s construction is compact and intended for straightforward alignment with the main telescope optical axis.

Suitable for

• Initial alignment and star-hopping to locate planets, stars and deep-sky objects
• Mounting on small to medium amateur telescopes for easier target acquisition
• Observers who require a choice of eyepiece orientation (straight view or 90° angled view)
• Use during visual observing sessions in suburban and rural conditions

Key specifications

• Magnification: 9×
• Objective aperture: 50 mm
• Eyepiece orientation: straight eyepiece supplied with 90° angle attachment
• Optical design: wide-field finder configuration for broad apparent field of view
• Typical use: auxiliary pointing aid for telescopes

How to use

Mount the finder scope securely to the telescope tube using the appropriate bracket and ensure the optical axis of the finder is adjustable for alignment. Begin by roughly aligning the finder with the telescope during daytime on a distant terrestrial object, then perform a fine alignment at night by centring a bright star in the main telescope and adjusting the finder’s alignment screws until the star is centred in the finder’s field. Choose the straight eyepiece or attach the 90° angle piece depending on viewing comfort and telescope position. Once aligned, use the finder to locate targets and centre them before switching to higher-power eyepieces in the main telescope.

Usage recommendations

For reliable alignment, perform coarse alignment during daylight and fine alignment at night. If you experience difficulty locating faint objects, verify collimation of the main telescope and use low-power eyepieces on the main instrument to increase the field of view before switching back to higher magnification. Keep optical surfaces clean and store the finder with protective caps when not in use.