ZWO 30mm f/4 Mini Guide Scope for ASI Cameras # 30120

Our #: OFIN-ZW-30F4
Mfg #: 30F4
Our Price: $99.00
Free shipping for this item in the US
More Info

Contiguous US Customers:
All items we sell ship for free within the Contiguous US. Shipping will be via the cheapest shipping method which will vary depending on the items in your order. During checkout, you may also be shown other optional faster shipping choices.

US Customers in Hawaii and Alaska:
Free shipping applies to almost all products. A few large telescopes and mounts are excluded from this free shipping offer. For these items, please contact us to obtain a shipping quote before you check out using the online shopping cart.

International Customers:
Free shipping does not apply to international orders. During check-out, you will be presented with several shipping choices and costs. However, the export of some items may be restricted outside the US due to size or manufacturer restrictions.

In Stock (10+ Available)
Stock listed above is accurate & shown in real time
Ships by Next Business Day

Quick Overview

  • Lightweight and compact ZWO f/4 Mini Guide Scope with 30mm aperture and focal length of 120mm
  • Works with all ZWO cameras including the ASI120-series and ‘Mini-series’ autoguiding cameras
  • Ideal for autoguiding during astrophotography with telescopes of <1200mm effective focal length
  • Includes mounting bracket and rings
  • Threaded adjustable objective cell enables 0-20mm of back focus

Product Details

The ZWO Mini Guide Scope weighs in at just over half a pound (240g), but it’s a powerful tool when matched with a sensitive ZWO camera for autoguiding during astrophotography. With a multi-coated 30mm cemented lens, this f/4 scope has a focal length of 120mm, ideal for autoguiding a main scope with an effective focal ratio of about 1200mm or less.

This guide scope focuses with a threaded front objective cell that allows an adjustable back focus of 0-20mm. You can directly thread a ZWO camera such as the ASI120-series onto the male M42x0.75 threads on the scope. Or you can directly insert a camera with a 1.25" nosepiece or a smaller ZWO autoguiding camera such as the ASI290MM-Mini or ASI120MM-Mini and lock it down with the two locking screws.

This little scope comes with guide rings and a Vixen/Synta style dovetail, which makes it easy to mount on nearly any telescope. The dovetail base also includes a ¼-20 screw hole for mounting on a photo tripod if you wish to use the scope as a camera lens or for visual viewing with an eyepiece. The entire scope, without the camera, is just 4.8” long (about 123mm).

A camera is not included with this guide telescope.

Specifications:

  • Lens Diameter: 30 mm
  • Focal Length: 120 mm
  • Weight (include guider ring and dovetail): 240g / 8.47oz
  • Back Focus: adjustable,(0~20 mm)
  • Focuser Type: front part focuser
  • Tube travel: 20 mm
  • Dovetail includes 1/4″ screw hole.
  • Two M4 screws to secure guide camera

Other Information

  • Country of Manufacture: China