TOA-130F on EM-200 Temma-2 EQ

TOA-130F on EM-200 Temma-2 EQ

With its Ortho-Apochromat Triplet (TOA) concept, Takahashi gives a second youth to the refractors of large diameter, often confined with the planetary and lunar observation. Greatest accessibility with the imagery as well as the appearance of increasingly large and increasingly powerful numerical sensors obliges to make these telescopes much more general-purpose and compact, less restricted with planets and observatories.

The TOA-130 associates the extraordinary contrast of the images and the absence of chromatism of apochromatic refractors with a consequent diameter and a reasonable focal distance, allowing a general-purpose use as well for the planetary high-resolution as for deep sky imaging. In this last field, its optical design enables it to fully use the capacities of all imagers of the market (35mm SLR/DSLR or 6x7 cameras but also wide-field CCD imagers).

The TOA-130 is available in S version, with traditional rack-and-pinion focuser, and in F version, with oversized rack-and-pinion focuser (and camera angle adjuster), perfectly adapted to imaging. For this optical tube of 1015mm length, of 130mm of diameter and of almost 10kg, configurations exist on EM-200 or EM-400 equatorial mountings.

Mount Description:

The EM-200 is a German equatorial mounting providing a stable support for any telescope up to 15 kg without the accessories (load limits 18kg, except counterweight). For example, Mewlon-210, CN-212 or TOA-130 OTAs will be comfortably exploitable with their equipment for astrophotography or CCD imaging. The couple of the motorization, more powerful than the old version, supports the use of the strong loads cantilever.

The EM-200, with an ergonomic design and particularly adapted to the hard night conditions, was designed to face the most extreme visual and photographic challenges. RA/DEC motors are totally integrated inside the mount not laying outside any components that are easily lost during night observation. Strict assembly and use of high performance mechanical pieces features Takahashi mounts with a periodic error of ± 5 arcsecond by turn, while competitors just do not provide such specification.

Optical Specification:

  • Optical design- Triplet Ortho Apochromat
  • Optical mounting- Air spaced
  • Glass types- SD/ED
  • Optical coatings- Fully Multi-Coated
  • Aperture- 130mm
  • Resolution- 0.92"
  • Visual limiting magnitude- 12.7
  • Light grasp- 469x
  • Focal length- 1000mm
  • Focal ratio- F/7.7
  • Image circle- NA
  • Photo field- NA
  • Focal length (with TOA-FL35 flattener)- 980mm
  • Focal ratio- F/7.5
  • Image circle- 40mm
  • Photo field- 2.3°
  • Photo format- DSR/DSLR 35mm camera
  • Focal length (with TOA-FL67 flattener)- 1000mm
  • Focal ratio- F/7.7
  • Image circle- 88mm (60% non-vignetted)
  • Photo field- 5.3°
  • Photo format- 6x7 camera
  • Focal length (with TOA-RD reducer)- 750mm
  • Focal ratio- F/5.8
  • Image circle- 45mm (60% non-vignetted)
  • Photo field- 3.8°
  • Photo format- DSR/DSLR 35mm camera
  • Focuser diameter- 101.6 mm
  • Tube length (mini/maxi)- 1015mm - 1145mm (with standard accessories)***
  • Tube diameter / with dew tube- 155mm / 179mm
  • Tube weight- 11.4 kg

***Retractable dew shield

EM-200 Temma-2 Jr Mount Specification:

  • Type- German Equatorial Mount
  • R.A. Slow-Motion- Motor driven
  • DEC. Slow-Motion- Motor driven
  • Azimuth Adjustments- ± 15°
  • Elevation Adjustments- 22 to 64°
  • Polar Finder / Accuracy- Built-in / 2'
  • R.A. Setting Circle Accuracy- 10 arcminutes
  • DEC. Setting Circle Accuracy- 2°
  • Encoders-  Included
  • Weight (without counterweight)- 15 kg
  • Counterweights- 2x5 kg
  • Maximal Loading Capacity- 18 kg (without counterweight)
  • Optimal Loading Capacity- 15 kg (without counterweight)
  • Operating Voltage- 12V / 24V DC
  • Power Consumption-  NC
  • Tube moutings- 2 x M8 screws (35mm)
  • Mounting Capacities- Tube rings, plates and dovetail mounting plates
  • Option- Tripods, piers
  • R.A. axis diameter (material)- 40 mm (bronze)
  • R.A. worm gear shaft diameter (material)- 18 mm (iron)
  • R.A. gear diameter (material)- 92mm/180 teeth (bronze)
  • DEC. axis diameter (material)- 40 mm (iron)
  • DEC. worm gear shaft diameter (material)-  18 mm (brass)
  • Stepper Motors Accuracy- 50 pps
  • Slow Motion Speeds- 0.1x to 1.9x the sidereal rate
  • High Speed Mode- 120x the sidereal rate (@12V ), 240x the sidereal rate (@24V)
  • Worm gear shaft cycle- 8 minutes
  • Tracking Accuracy- ± 5"
  • Autoguiding- SBIG ST-4/7 compatible