Borg 7870 Reducer 0.7x
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Borg 7870 Reducer 0.7x DGT in very good condition.
BORG 7870 Multi Reducer 0.7x DGT is a discontinued 0.7x triplet focal reducer designed by Tomytec for BORG refractors to cover full-frame sensors.
- 300mm to 1000mm focal length refractors
- covers all Borgs from the past to the present, including 45ED, 45EDII, 50ED, 50EDII, 50FL, 60, 60ED, 71FL, 76, 76ED, 76TR, 77ED, 77EDII, 89ED, 100, 101ED, 101EDII, and 125SD.
- can be used with refracting telescopes from other manufacturers
- reduces the chromatic aberration inherent in the objective lens.
- has a wide image circle and is compatible with full-frame cameras.
- three-element design
- has a built-in camera rotation device
- requires 130mm backfocus
- accepts a 48mm filter
- backfocus: 55mm
- objective side: M57 P0.75 male
- camera side: M57 P0.75 female
- optical path: 59mm
- weight: 350g
- compatible cameras: Full-frame, APS-C, Four Thirds, Micro Four Thirds
- the rotation fixing screw and focal length fixing screw can be turned with a coin. Be careful not to overtighten, do not use anything other than a coin
- includes front and rear caps
Using Borg 7870 Reducer 0.7x you get:
- 45EDII - F5.1
- 50FL - F5.6 - incredibly sharp
- 60ED - F4.1 - bright, light, and short.
- 71FL - F3.9 - amazing brightness
- 71FL with 80mm tube - F3.9 - recommended for astrophotography fans
- 77EDII - F4.6 - bright, short, and sharp even at the edges
- 89ED - F4.7 - bright. Slight distortion at the edges. Blue halo is somewhat noticeable
- 101EDII - F4.4 - bright, large aperture
- 125SD - F4.2 - very bright and large aperture
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BORG 7870 Multi Reducer 0.7x DGT is a discontinued 0.7x triplet focal reducer designed by Tomytec for BORG refractors to cover full-frame sensors.
- 300mm to 1000mm focal length refractors
- covers all Borgs from the past to the present, including 45ED, 45EDII, 50ED, 50EDII, 50FL, 60, 60ED, 71FL, 76, 76ED, 76TR, 77ED, 77EDII, 89ED, 100, 101ED, 101EDII, and 125SD.
- can be used with refracting telescopes from other manufacturers
- reduces the chromatic aberration inherent in the objective lens.
- has a wide image circle and is compatible with full-frame cameras.
- three-element design
- has a built-in camera rotation device
- requires 130mm backfocus
- accepts a 48mm filter
- backfocus: 55mm
- objective side: M57 P0.75 male
- camera side: M57 P0.75 female
- optical path: 59mm
- weight: 350g
- compatible cameras: Full-frame, APS-C, Four Thirds, Micro Four Thirds
- the rotation fixing screw and focal length fixing screw can be turned with a coin. Be careful not to overtighten, do not use anything other than a coin
- includes front and rear caps
Using Borg 7870 Reducer 0.7x you get:
- 45EDII - F5.1
- 50FL - F5.6 - incredibly sharp
- 60ED - F4.1 - bright, light, and short.
- 71FL - F3.9 - amazing brightness
- 71FL with 80mm tube - F3.9 - recommended for astrophotography fans
- 77EDII - F4.6 - bright, short, and sharp even at the edges
- 89ED - F4.7 - bright. Slight distortion at the edges. Blue halo is somewhat noticeable
- 101EDII - F4.4 - bright, large aperture
- 125SD - F4.2 - very bright and large aperture
Free Shipping.
Accept Paypal
