Unlike traditional telescopes, the RASA design ingeniously places the imaging sensor at the front of the telescope tube, creating an ultra-fast f/2. Universal 1 1/4 inch 2x multiplierDouble the magnification of each eyepiece you own with the Omni 2X Barlow Lens. Therefore, an increase in the effective focal length of the telescope results in an increase in magnification. For example, an 18mm eyepiece used with a 2x Barlow lens would have the magnifying power of a 9mm eyepiece.

Lunar observations in the early morning, when the seeing was at its best, gave most enjoyable views of the lunar surface, with sharp detail on the terminator. Prime focus and tele-extended photography are popular for short exposure images of terrestrial objects as well as celestial objects like the Moon. The soft rubberised material of the dust caps for both barrel and eyepiece holder made for a pleasant change from plastic inserts. A Powermate’s magnification remains fairly constant irrespective of where the eyepiece is positioned.Eyepiece will increase the magnification of the eyepiece by 2 times, thereby making it easier to spot detail in the surface of the nearest planets. Let's say you have two eyepieces in your accessory case, a 10 mm and a 25 mm, add a Celestron Omni 2X Barlow Lens to the mix, and now you have four magnifications to choose from. T-threads on the top of the adapter screw into a T2 mount (sold separately) that is designed to attach to the brand-specific lens mount of your DSLR or SLR camera. The beautifully applied, green-tinged multicoating on its three lens elements gives it an air of quality, and we particularly liked the ease of insertion into our star diagonal afforded by the barrel design. Typical Barlows have a magnification of 2x and are composed of two or sometimes three elements in a single group, forming a negative lens.

This Barlow gave excellent views of Venus during moments of good seeing despite the planet’s low altitude. ED stands for "extra-low dispersion," which refers to the composition and optical properties of the glass used for the lenses.Say you have two eyepieces in your accessory case, a 10 mm and a 25 mm if you add a Celestron Omni 2X Barlow Lens to the mix, you now have four magnifications to choose from. It is ideal for high powered viewing of the moon and planets when using refractor or reflecting telescopes.

Really easy to use, it fits onto the eyepiece and is a less expensive way of increasing a telescopes magnification. This design ensures that the original eye relief of the eyepiece remains unchanged, making it more suitable for longer focal length eyepieces and avoiding the risk of vignetting. We turned to Orion's Sword and achieved splendid views with our our 26mm and 10mm eyepieces in the Barlow. All goods are shipped with UPS, DPD, DHL, DX Express, ParcelForce and Royal Mail, we do not use budget couriers, we only ship to UK mainland addresses and do not ship to forwarding agents or PO boxes. The lens itself unscrews from the housing, looking forward to seeing if I can use it with a t adapter to achieve prime focus with my dslr.

You calculate the magnification of a telescope by dividing its focal length by the focal length of the eyepiece.

The eyepiece barrel has a plain profile, which makes inserting it into a star diagonal a quick process indeed. adaptor are designed with a brass compression ring to securely hold eyepieces and protect the eyepiece barrel from scratches. The Ostara Long Body 2x Achromatic Barlow lens doubles the magnification with any given eyepiece, without any noticeable loss in image quality.Great for use with 2" eyepieces to double the power but retain the eye relief and comfort, also well suited to imaging applications where higher magnifications are required. When you use a Barlow lens with an eyepiece, you get double the magnification, but the eye relief is not affected. With the Barlow lens cell removed - the remaining body and nosepiece can be used as a straightforward, non-magnifying camera adapter or a 1. The most important factor in ensuring successful microscopic imaging is choosing the appropriate optics and camera for your application that gives you more data and higher image quality. Insert the Barlow lens between the eyepiece and the telescope and you will double the magnification.