MTO - Russian Maksutov Tele-Lenses by Telescope-Service

Photovisual Maksutov Tele-Lenses
100/1000mm , 90/500mm and 67/300mm

These are among our most popular instruments - the MTO telelenses are very versatile and offer an incredible performance per money spent. The 100/1000mm MTO can be used both visually and photographically without reservations., the other models also work but are a bit less flexible.

These instruments are tested and have relaxed mirrors and extended back-focus for use of many accessories.

Easy Payment: We offer our customers several easy and fast payment methods. You will receive exact payment details when ordering or on request!

MTO 1000 with optional T2 adaptor. You can see two of the four tripod connection threads.

The MTO 1000 is a classical Maksutov-Cassegrain with an additional field flattening lens for photography. As a result you will get a better field illumination and image sharpness towards the edge of the field.

Visually magnifications up to approx. 150x are possible.

Specifications:

Aperture / Focal Length	100mm / 1000mm
Focal Ratio	f/10
Weight	2.3 kgs (without additional accessories)
Photographical Field	approx. 45mm diameter fully corrected
Focus Mechanism	large focusing collar (similar to most tele lenses), free of image shift
Optical Layout	classical Maksutov-Cassegrain with spherical primary mirror, meniscus lens and secondary mirror. Closed system. At the rear of the telescope a multi-coated field flattening / corrector lens is used for better photographical correction
Tripod Connection	two 1/4" and 3/8" threads (90° apart). Sufficient for use on a camera tripod. For astronomical use we recommend our MTO L-Bracket for adaptation (see below under recommended accessories)
Camera & Eyepiece Adaptation	The MTO has an M42x1 thread at the rear. We offer adaptations for most common SLR cameras and eyepieces (for this purpose the back focus has been extended)

Further Information:

The Focus Mechanism works through a focusing collar that moves the entire rear half of the tele lens in relation to the front half. The mechanism is practically free of image shift and has several big advantages:
- there are no moving parts at the rear. No cheap focuser with image shift is needed. The camera or eyepieces are firmly held in positon.
- we modify the MTO 1000 tele lenses to extend the back focus. As a result you can use a multitude of accessories, even those with a long optical length

The Retractable Dewcap effectively prevents the formation of dew under most conditions. Fully retracted the MTO is very short for transport.

Please send requests or online orders to: sales@telescope-service.com

MTO 1000 - Available Variants

We offer two basic variants of the MTO1000. The MTO 1000 Tele is a simple tele lens. Back focus has been extended, but no eyepiece adaptations are included.
The MTO 1000 Spotting Version is a telescope with eyepiece and star diagonal, but without a mount or tripod.
The MTO 1000 on TS AZ and SkyView are complete telescopes with mount and tripod.

Scope of delivery: three filters, carry case, MTO1000

The MTO 1000 was designed as a good quality but affordable tele lens for photography. It offers a good image sharpness, a very long focal length and a moderate focal ratio.

The MTO 1000 Tele is warmly recommended for nature photographers and even for astro-imaging.

The integrated field flattening lens offers a larger corrected field than is possible with a classical Maksutov. A 45mm field is fully corrected.

Photographical Specifications:
Aperture 100mm / Focal Length 1000mm / Focal Ratio f/10

Scope of Delivery:
MTO 1000, three glass filters, carry case

TS Special Service Package:
Each MTO 1000 which we ship is relaxed and modified prior to shipping. We extend the back focus so that you can reach focus with standard SLR cameras and also with astronomical accessories.

Specifications

Recommended Accessories

Camera Tripods

Upgrade Possible:
If you later want to upgrade your MTO 1000 and use it as a Spotting Scope or telescope that is possible. All necessary adaptors are available separately. You can find them by following the "recommended accessories" link to the left.

The Three Glass Filters And Their Use:
Skylight Filter ... protects the meniscus lens and reduces UV light
Green Filter ........ strong contrast and experimental filter for monochrome photography
Orange Filter ..... contrast filter - nearly completely "swallows" the blue light

Prices:

Item No.	Short description	Price - Euros incl. VAT
MTO 1000 Tele	MTO 100/1000 Tele Mak with carry case and three filters	Link to our online shop

Please send requests or online orders to: sales@telescope-service.com

MTO 1000 - Spotting Scope

The 1.25" visual back is included in the scope of delivery.

The MTO 1000 Spott is a compact spotting scope for nature observers, target shooters and hunters. It also serves as a good quality compact telescope for amateur astronomers. The typical Russian rigidity of design means that it survives even somewhat careless transport. In addition to its good visual performance you can of course use this spotting scope also as a tele lens for photography (see MTO 1000 Tele). This makes the MTO superbly versatile.

Recommended Magnifications:
With the proper eyepieces (you can use standard 1.25" eyepieces) you can reach magnifications from approx. 25x to 150x. Here you will find a selection of recommended eyepieces and accessories.

Scope of Delivery:
- MTO 1000 Spotting Scope with M42x1 thread and 1.25" visual back
- tripod adaptation possible through two 1/4" and two 3/8" threads
- 1.25" star diagonal for an upright but mirror reversed image in a comfortable 90° angled position
- 20mm Plossl eyepiece for 50x magnification

Tripod and Mount Adaptation:
The various tripod connection threads are always part of the scope of delivery. For a firmer and more secure adaptation we also offer a solution here

Specifications

Recommended Accessories

Camera Tripods

Option for Terrestrial Viewing:
The standard scope of delivery includes a 90° star diagonal. This diagonal offers high contrast images for astronomical applications and should be always used for nightsky use. But for terrestrial observing the mirror-reversed image might be distracting. You can get a 45° erecting prism for terrestrially correct images instead of the star diagonal if you prefer this! Please let us know at the time of your order!

Upgrade For Photography:
The MTO 1000 Spot can of course also be used as a tele lens like the MTO 1000 Tele. For most cameras you will need the proper adaptors. Further Information on the MTO 1000 Tele version. Please note that there are different scopes of delivery, but the specifications and properties of the instruments are the same.

Prices:

Item No.	Short description	Price - Euros incl. VAT
MTO 1000 Spot	Mak 100/1000 with carry case. M42x1 and 1.25" adaptation. Incl. 1.25" star diagonal and 20mm Plossl eyepiece	Link to our online shop

Please send requests or online orders to: sales@telescope-service.com

MTO 1000 - Spotting Scope on Alt-Azimuth Mount & Tripod

An Excellent Set For Nature Observers And Stargazers!

The MTO 1000 TSAZ is very easy to use and very compact .... Further Information on the TS AZ mount

The MTO on the TS AZ mount is ideally suited for birdwatchers and nature observers. You can track flying planes or ships on the horizon. There are slow-motion controls for both axes.

One particular advantage of this mount is the quick release device - you can mount and take off the MTO within just a few seconds.

Recommended Magnifications:
With the proper eyepieces (you can use standard 1.25" eyepieces) you can reach magnifications from approx. 25x to 150x. Here you will find a selection of recommended eyepieces and accessories.

Scope of Delivery:
- MTO 1000 Spotting Scope with M42x1 thread and 1.25" visual back
- tripod adaptation possible through two 1/4" and two 3/8" threads
- 1.25" star diagonal for an upright but mirror reversed image in a comfortable 90° angled position
- 20mm Plossl eyepiece for 50x magnification
- Alt-Azimuth mount TS AZ with adjustable height aluminium tripod and slow motion controls in both axes

Upgrade For Photography:
The MTO 1000 Spot can of course also be used as a tele lens like the MTO 1000 Tele. For most cameras you will need the proper adaptors. Further Information on the MTO 1000 Tele version. Please note that there are different scopes of delivery, but the specifications and properties of the instruments are the same.

Specifications

Recommended Accessories

Camera Tripods

Item No.	Short description	Price - Euros incl. VAT
MTO 1000 TSAZ	Mak 100/1000 with carry case. M42x1 and 1.25" adaptation. Incl. 1.25" star diagonal and 20mm Plossl eyepiece On TS AZ alt-azimuth mount	Link to our online shop

Please send requests or online orders to: sales@telescope-service.com

M42-T2.jpg (2390 Byte)

T2 Adaptor for MTO

This adaptor has an M-42x1 female thread and a T2 male thread. It fits directly on the MTO 1000, MTO 500 and MTO 300. You can then use standard T-rings for attaching SLR and DSLR cameras. The adaptor is made to minimize vignetting (i.e. black edges on the image).

Item No.	Short description	Price - Euros incl. VAT
TS M42-T2	Adaptor M42 on T2 male thread for MTO	Shop

Please send requests or online orders to: sales@telescope-service.com

More Recommended Accessories

	TS - Super Plossl Eyepieces - Fully Multi-Coated Good quality eyepieces with an excellent image sharpness. The field of view of 52° is very comfortable. Eye relief is comfortable down to the 9mm. Below 9mm we the Super Plossls are recommended for observing the planets. The eyepieces are fully multi-coated and have blackened lens edges for optimum contrast. We offer the following focal lengths: 40mm, 32mm, 25mm, 20mm, 15mm, 12mm, 9mm, 6mm and 4mm Further Information
	Colour Filter For Boosting Contrast Of Moon And The Planets - Also Suitable For Terrestrial Use Colour filters can "squeeze out" a lot of additional detail on the moon and the planets. They are screwed into the eyepiece. We offer colour filters in many different colours for different purposes. Further Information
	TS Barlow Lens 2x The TS 2x Barlow Lens doubles magnification with any given 1.25" eyepiece. It is very useful for attaining higher magnifications with longer focal length eyepieces. As a result you get a longer eye relief and therefore more observing comfort. Further Information
	Star Diagonal 90° and Erecting Prism 45° The star diagonal is used for a much more comfortable observing position without straining your neck. It offers an erect but mirror reversed image. It is recommended for astronomical observing. The 45° erecting prism offers a terrestrially correct view (right side up, non reversed). It is recommended for use of the MTO 1000 as a spotting scope. Further Information
	Micro-Focuser The MTO 1000 focus mechanism works by turning a large focusing collar which moves the front part of the tele in relation to the rear part. As a result the tele is very versatile and accepts many accessories, but some people have problems finding exact focus. The Micro-Focuser is the solution for that problem. It is used like an eyepiece, i.e. it is put into the 1.25" visual back of the MTO Spott. The star diagonal or eyepiece is in turn put into the micro-focuser. The focuser offers a very smooth focus motion and is a warmly recommended accessory for the MTO 1000. Further Information

Please send requests or online orders to: sales@telescope-service.com

MTO 90/500 - Powerful Tele Lens
A very affordable high resolution tele lens.

MTO 500 - Tele Lens - Focal Ratio f/5.6

The MTO 500 is a high resolution Maksutov tele lens with a large and well corrected photographical field (up to and including 35mm film format). Most of all it is very compact given its extreme focal length of 500mm - it can easily be carried around.

The MTO 500 can be used for nature photography. It has a correcting lens for a larger photographical field than would be possible with a regular Maksutov design.

TS Special Service Package:
Each MTO 500 which we ship is checked and modified prior to shipping. We extend the back focus so that you can reach focus with standard SLR cameras and also with some astronomical accessories.

Scope of delivery: three filters, carry case, MTO500

Scope of Delivery:
MTO 500, three glass filters, carry case

Specifications:

Aperture / Focal Length	Aperture 90mm / Focal Length 500mm
Focal Ratio	f/5.6
Weight	1.8 kgs (without additional accessories)
Photographical Field	approx. 40mm diameter fully corrected
Focus Mechanism	large focusing collar (similar to most tele lenses), free of image shift
Optical Layout	classical Maksutov-Cassegrain with spherical primary mirror, meniscus lens and secondary mirror. Closed system. At the rear of the telescope a multi-coated field flattening / corrector lens is used for better photographical correction
Tripod Connection	1/4" thread with 360° rotation. Nearly all camera tripods have this thread
Camera & Eyepiece Adaptation	The MTO has an M42x1 thread at the rear. We offer adaptations for most common SLR cameras and eyepieces (for this purpose the back focus has been extended)

MTO 500 - Visual Use

The MTO500 can be used visually only within certain limitations. The short back focus does not permit the use of a star diagonal or erecting prism. You can only use it "straight through" with standard 1.25" eyepieces.

An adaptation is possible using a Barlow lens to extend the focal plane further out, but that means a higher (approx. 3x) magnification...... see : Recommended Accessories

Important Photographical Accessories: M42-to-T2 Adaptation With 360° Rotation And Filter Thread

TS Rotation System
A very clever and versatile adaptor. Ideal for astro-imaging if you want to use 2" filters. Further information coming soon!

The Three Glass Filters And Their Use:
Skylight Filter ... protects the meniscus lens and reduces UV light
Green Filter ........ strong contrast and experimental filter for monochrome photography
Orange Filter ..... contrast filter - nearly completely "swallows" the blue light

Prices:

Item No.	Short description	Price - Euros incl. VAT
MTO 500 Tele	Mak 90/500 with carry case and three glass filters	Link to our online shop

Please send requests or online orders to: sales@telescope-service.com

Accessories For The MTO 500

M42-T2.jpg (2390 Byte)

T2 Adaptor for MTO

Item No.	Short description	Price - Euros incl. VAT
TS M42-T2	Adaptor M42 on T2 male thread for MTO	Shop

The MTO 300 is a very compact high definition telelens which fully illuminates the 35mm film / chip format. With only about 10cm length the MTO 300 fits into nearly any camera bag - a huge contrast to the often unwieldy conventional telelenses.

The MTO 300 allows you to take beautiful nature photos. 300mm focal length is a very frequently used size both for conventional and digital SLR cameras.

At f/4.5 exposure times are quite short, so you can use the MTO 300 even in relatively dark lighting conditions.

Like the larger MTOs the 300mm tele uses a field flattening lens for better image sharpness over the entire 35mm film format.

TS Special Service Package:
Each MTO 300 which we ship is checked and modified prior to shipping. We extend the back focus so that you can reach focus with standard SLR cameras and also with some astronomical accessories.

Scope of Delivery:
MTO 300, dewcap, carry case, two glass filters

Specifications:

Aperture / Focal Length	Aperture 67mm / Focal Length 300mm
Focal Ratio	f/4.5
Weight	approx. 500 grams (without additional accessories)
Photographical Field	approx. 40mm diameter fully corrected
Focus Mechanism	focusing collar (similar to most tele lenses), free of image shift
Optical Layout	classical Maksutov-Cassegrain with spherical primary mirror, meniscus lens and secondary mirror. Closed system. At the rear of the telescope a multi-coated field flattening / corrector lens is used for better photographical correction
Tripod Connection	due to the low weight the adaptation is through the camera
Camera & Eyepiece Adaptation	The MTO has an M42x1 thread at the rear. We offer adaptations for most common SLR cameras and eyepieces (for this purpose the back focus has been extended)

MTO 300 - Visual Use

The MTO500 can be used visually only within certain limitations. The short back focus does not permit the use of a star diagonal or erecting prism. You can only use it "straight through" with standard 1.25" eyepieces.

An adaptation is possible using a Barlow lens to extend the focal plane further out, but that means a higher (approx. 3x) magnification...... see : Recommended Accessories

Important Photographical Accessories: M42-to-T2 Adaptation With 360° Rotation And Filter Thread

TS Rotation System
A very clever and versatile adaptor. Ideal for astro-imaging if you want to use 2" filters. Further information coming soon!

Further Information on the Maksutov 100/1000mm	Further Information on the Maksutov 90/500mm
Further Information on the Maksutov 62.5/500mm