Orion USA Eyepieces and Accessories

Good quality accessories are equally important as the quality of the telescope itself. Orion USA offers a broad range of eyepieces, filters and other accessories for your telescope.


Ultrascopic Eyepieces 5 and 7 lens eyepieces Focal lengths 3.8mm to 35mm	Wide Angle Eyepieces STRATUS 68° field of view - 8 element optical design - 20mm eye relief	Nebular Filters Broadband and narrowband filters for various telescope and eyepiece mounts	Variable Polarizer Neutral (grey) filter infinitely adjustable - 1.25" & 2"

2x Barlow 1.25" - 3 Lens Design High quality apochromatic Barlow lens Shorty Plus

Orion Ultrascopic eyepieces are made in Japan. Even with critical telescopes, such as short focal ratio Newtonians or apochromatic refractors the image sharpness is very good over the entire field of view. There are nearly no telescopes that you cannot use these eyepieces with.

Ultrascopic eyepieces do not have an exaggerated field of view that is only sharp in the cecntral 50%. Instead the comfortable field of view is fully corrected to the edge.

Coating
The eyepieces are fully multi-coated. This means that a multi-layer anti-reflective coating is applied to each glass-to-air surface. According to the manufacturer this coating has the highest quality that is technologically available today.

Blackened Interior
The eyepiece body is blackened inside and offers baffles against stray light. In addition the edges of the eye lenses are blackened as well. The result is an extremely good contrast and minimized internal reflections.

Item No.	Focal Length	Apparent Field of View	Barrel Size	No. of lenses	Price - SEK incl. VAT
Ultra 3	3.8 mm	52 °	1.25 " / 31.7 mm	7 Lenses	1240,-
Ultra 5	5 mm	52 °	1.25 " / 31.7 mm	7 Lenses	1240,-
Ultra 7	7,5 mm	52 °	1.25 " / 31.7 mm	5 Lenses	1095,-
Ultra 10	10 mm	52 °	1.25 " / 31.7 mm	5 Lenses	1095,-
Ultra 15	15 mm	52 °	1.25 " / 31.7 mm	5 Lenses	1095,-
Ultra 20	20 mm	52 °	1.25 " / 31.7 mm	5 Lenses	1095,-
Ultra 25	25 mm	52 °	1.25 " / 31.7 mm	5 Lenses	1240,-
Ultra 30	30 mm	52 °	1.25 " / 31.7 mm	5 Lenses	1345,-
Ultra 35	35 mm	49 °	1.25 " / 31.7 mm	5 Lenses	1450,-

Item No.	Short description	Price - SEK incl. VAT
Gummi Muschel	Winged rubber eyeguard for Ultrascopic eyepieces. Also fits onto TS Orthoscopic eyepieces, Baader Genuine Orthos, Baader Eudiascopic eyepieces, ...	63,-

Each STRATUS eyepiece has a very large eye lens and 20mm eye relief - this makes them perfectly suitable for eyeglass wearers

The Orion STRATUS eyepieces are an excellent range of high contrast wide angle eyepieces. They offer a very generous 68° apparent field of view and are equally suited for deep sky, lunar and planetary viewing.

The visible field is approximately 70% larger than that of a typical Plossl eyepiece.

One particular strength of the STRATUS eyepieces is their extreme viewing comfort. You can easily see the entire field of view - with or without eyeglasses. You can keep a comfortable 20mm distance between your eyes and the eyepiece.

8 lenses offer an excellent field sharpness, even at short focal length telescopes such as "fast" Newtonians. At the same time the sharpness on axis is excellent - each glass to air surface features a high grade multi-coating, and the lens edges are blackened for maximum contrast.

If you are looking for a set of all-purpose eyepieces for viewing the planets, the moon and deep sky objects regardless, these are a hot recommendation!

Item No.	Focal Length	Apparent Field of View	Eye Relief	No. of Lenses	Price - SEK incl. VAT
Stratus 3	3.5 mm	68°	20mm	8 Lenses	1440,-
Stratus 5	5 mm	68°	20mm	8 Lenses	1440,-
Stratus 8	8 mm	68°	20mm	8 Lenses	1440,-
Stratus 13	13 mm	68°	20mm	8 Lenses	1440,-
Stratus 17	17 mm	68°	20mm	8 Lenses	1440,-
Stratus 21	21 mm	68°	20mm	8 Lenses	1440,-

Please send requests or online orders to: sales@teleskop-service.se

Nebular Filters - 1.25" / 2" / SC

Nebular filters block artificial stray light, permitting the light of gas nebulae and planetary nebulae nearly unhindered. As a result contrast is enhanced strongly.

Broadband Nebular Filter

Visual Application
Broadband nebular filters have a higher light transmission than narrowband filters. As a result the image is brighter and allows you to use these filters on smaller telescopes (70mm aperture and larger). The overall impression of the image remains unchanged, only the number of visible stars is reduced slightly.

The filter is used not only for planetary nebulae and gas nebulae (such as a narrowband filter), but also for galaxies. Of course the brightness of the galaxy is reduced a bit, but the contrast is enhanced by cutting off artificial stray light and thus reducing the background brightness.

Photographical Application
This is one application the broadband filters excel in. Exposure times are extended by about 100%, but the contrast is enhanced noticeably. Even near light-polluted urban areas you will get good-quality colour images of deep sky objects.

Item No.	Short description	Price - SEK incl. VAT
OR BNF 1,25"	Broadband filter - with 1.25" filter thread for standard 1.25" eyepieces and accessories	782,-
OR BNF 2"	Broadband filter - with 2" filter thread for standard 2" eyepieces and accessories	928,-
OR BNF SC	Broadband filter - SC thread on both sides - for Celestron and Meade Schmidt Cassegrains, many Maksutov-Cassegrains, ...	928,-

Narrowband Nebular Filter

Visual Application
Narrowband nebular filters are made for astronomical observations in light-polluted areas. The important spectral lines H-Alpha, H-Beta and O-III are permitted through the filter nearly unhindered, while background brightness is reduced by cutting off stray light.

Deep Sky objects gain a lot of contrast from narrowband filters. Gas nebulae and planetary nebulae in particular often appear better in a small telescope with narrowband filter than in a larger telescope without filter.

We do not recommend using the filter for galaxies because they become too faint in the filter.

Photographical Application
With a narrowband filter capturing gas nebulae and planetary nebular from light-polluted urban areas becomes possible. Exposure times become 4-5 times longer, but contrast is raised enormously.

Item No.	Short description	Price - SEK incl. VAT
OR NNF 1,25"	Narrowband filter - with 1.25" filter thread for standard 1.25" eyepieces and accessories	928,-
OR NNF 2"	Narrowband filter - with 2" filter thread for standard 2" eyepieces and accessories	1137,-
OR NNF SC	Narrowband filter - SC thread on both sides - for Celestron and Meade Schmidt Cassegrains, many Maksutov-Cassegrains, ...	1305,-

There is often a large difference in brightness in details of many objects within our solar system. This is particularly obvious in:

- craters on the moon near the terminator (the dividing line between the bright and the dark side of the moon)
- sun spots and flares on the sun
- details of the planets

Bright areas outshine dark regions so that you will not be able to see all delicate details. With a variable polarizer you can adjust the image brightness according to your observing needs at any moment.

Light Transmission
Transmission of the variable polarizers is freely adjustable between 1% and 40%. As a result you can use the filter on nearly any telescope.

Practical Use
The variable polarizers are made of two separate polarizing filters in a rotating cell. By rotating the lower filter in relation to the upper filter you can reach different factors of light transmission.

Item No.	Short description	Price - SEK incl. VAT
FXP 1	Variable polarizer for 1.25" eyepieces	695,-
FXP 2	Variable polarizer for 2" eyepieces	1095,-

The Orion Shorty Plus Barlow lens offers top grade image quality with all telescopes - Newtonians, Apochromats, Mak-Newtonians, ...
Its short body allows you to use it in 1.25" star diagonals or short Newtonian focusers.

The Barlow lens itself consists of three air-spaced multi-coated lenses for maximum transmission and image sharpness.

With 27mm clear diameter you can use all 1.25" eyepieces without vignetting.

The Shorty Plus is also highly recommended for astro-imaging. With the optional T2 adaptor you can attach standard SLR cameras (you only need a T-ring for the camera), turning the Shorty Plus Barlow into a powerful tele-converter with a focal extension factor of approx. 2.5x

Item No.	Short description	Price - SEK incl. VAT
Shorty	Apochromatic 3-element Barlow lens 2x - 1.25"	928,-
TS FA 1	T2 adaptor for the Shorty Plus Barlow. Allows you to attach various cameras to the Shorty Plus	188,-