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The 7214 teleconverter works with Borg scopes from
the Mini Borg 45ED up to the Borg 101ED, and
third-party refractors between 300mm and 640mm
focal length. It is specifically designed to
minimize internal reflections when photographing
bright objects such as the moon, sun, or solar
eclipses.
Recommended configuration for use with DSLR
cameras:
7214 -
7000 -
500x (camera adapter) -
DSLR camera body
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A:
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M57 P0.75 Male
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B:
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M57 P0.75 Female
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Notes:
- Distance from B-side interface flange to image
plane is 60mm (fixed distance).
- Adjustment for objective focal length does not
require the use of tools. The adjustment position
of the assembly is held by friction.
| Optical Performance |
0mm |
28mm |
43mm |
| 45ED |
|
|
|
| Illumination (%) |
100% |
90% |
76% |
| Spot size (micron) |
20 |
20 |
20 |
| |
| 60ED/77ED |
|
|
|
| Illumination |
100 |
85 |
71 |
| Spot size |
30 |
20 |
20 |
| |
| 101ED |
|
|
|
| Illumination |
100 |
85 |
63 |
| Spot size |
30 |
20 |
20 |
|
|
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Part #7214
DG 1.4X Teleconverter
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2018-01-03
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