TOA
Series
This
21st century innovation employs a newly designed triplet using
special elements to produce the highest order of color correction,
hence the name Ortho-Apochromat.
TOA-130
This
instrument will be offered with the classic 2.7” focuser.
For those wanting to use a medium format camera, we will offer
a deluxe 4” focuser with built –in camera angle adjuster.
This focuser, coupled with the dedicated flattener, will produce
a fully illuminated 70mm circle with a usable 92mm diameter.
The
high order of color correction of the Ortho-Apochromat Series
produces images with saturated color and thanks to the numerous
knife-edged baffles, an image with amazing contrast.
The
TOA-130 is perfect for visual, CCD and photo imaging. The f/7.7
focal ratio with a 1000mm focal length is long enough, using the
LE-ED 2.8mm Takahashi ocular, for high magnification observations
of the Moon and planets and yet will produce a 2.5° field
at 20x when used with the Takahashi flat field LE-50 2 “
ocular.
Ample
back focus, over 200mm from the rear cell, has been designed in
to permit the user to use a variety of CCD cameras, color filter
wheels and electronic focusers or film cameras.
Our
Price (OTA w/2.7" focuser): $5249 |
Our
Price (OTA w/4" focuser): $5979 |
| Aperture |
130mm |
| Focal
Length |
1000mm / 754mm w/ reducer |
| Focal
Length w/ flattener |
999mm |
| Focal
Ratio |
F/7.7
/ F/5.8 w/ reducer |
| Focal
Ratio w/ flattener |
F/7.68 |
| Image
circle |
Ø92mm |
| Photographic
field |
5.3°
/ 3.8 |
| Finder
scope |
7x50
6.3° |
| Backfocus
from end of OTA |
256mm
+ |
| Tube
Diameter |
155mm
/ 179 mm w/ dew shield |
| Tube
Length |
812mm
w/ adapters removed |
| Diameter
of dew shield |
179mm |
| Dew
shield |
Retractable |
| Tube
Weight |
10kg
(22lbs) |
2.7"
Flattener (TOA-130S)..........
| Focal
Length |
980mm |
| Focal
Ratio |
F/7.53 |
| Image
circle |
40mm |
| Photographic
field |
2.3° |
4"
Flattener (TOA-130F)..............
| Focal Length |
1000mm |
| Focal Ratio |
F/7.68 |
| Image circle |
92mm |
| Photographic field |
5.3° |
2.7"/4" Reducer (TOA-130R)...........Our
Price: $504.00
| Focal Length |
750mm |
| Focal Ratio |
F/5.76 |
| Image circle |
50mm |
| Photographic field |
3.8° |
2"
1.6X Extender (TOA-130EX)........Our
Price: $323
| Focal Length |
1600mm |
| Focal Ratio |
F/12.3 |
| Image circle |
40mm |
| Photographic field |
1.4° |
TOA-150
The TOA-150 is the second Takahashi Ortho Apochromat to be developed by Takahashi. It features a newly designed triplet objective. This new design like its smaller companion the TOA-130 is absolutely color free.
New design 150mm triplet Ortho apochromat
-
Extremely high order of color correction, absolutely color free images
-
Highly portable with a retractable lens shade, compact tube
-
10 to 1 fine focuser and finder quick release standard
-
4" focuser w/camera rotator bearing allows
360 degree rotation without losing focus
-
Optional f/5.5 Super Reducer for medium format CCD cameras and large chip digital SLR's
-
Oversized tube for superior baffling
-
Knife edge baffles for extremely high contrast images
-
Enhanced back focus to allow the use of any combination of CCD camera, filter wheel, binocular viewer or 2" diagonal
The 179mm oversized tube was used to provide superior baffling and extremely high contrast. Knife edged baffles inside the tube help provide this great contrast.
The high contrast and total lack of color makes the TOA-150 not only an outstanding optical instrument, but it can be used to make outstanding images with a CCD, digital SLR or film camera. Framing the image or placing the ocular in a convenient position is made simple because of the built-in camera angle adjuster that allows the
360 degree rotation of the camera or ocular without loss of focus.
The smooth heavy duty retractable lens shade allows the length of the TOA-150 to be reduced to 38" for easy transport to remote sites.
Attaching the Extender TOA converts the 150 into and f/11.68 planetary instrument capable of very high magnification images. It maintains the color correction and flattens the field.
SPECIFICATIONS for the TOA-150 (Tube assembly only)
| Objective: |
150mm triplet Ortho Apochromat |
| Focal Ratio |
f/7.33 |
| Effective Focal Length |
1100mm |
| Tube Diameter |
ø179mm |
| Focuser |
4" w/Camera Angle Adjuster and 10:1 Micro Edge Focuser |
Effective Focal Length
[W/35 Flattener*] |
1080mm |
| Effective F-Ratio |
F/7.2 |
| Image circle |
ø40mm |
Effective Focal Length
[W/35 Flattener*] |
1090mm |
| Effective F-Ratio |
F/7.3 |
| Image circle |
ø90mm |
Effective Focal Length
[W/35 Flattener*] |
860mm |
| Effective F-Ratio |
F/5.7 |
| Image circle |
ø50mm |
Effective Focal Length
[W/35 Flattener*] |
605mm |
| Effective F-Ratio |
F/5.5 |
| Image circle |
ø70mm |
*35 Flattener can be
used with the Extender-TOA for flat-field high magnification observing
* Can be used with Extender-TOA for flat-field observing
